2024 Hyundai Ioniq 5 Standard range RWD
Electric SUV · RWD
Based on battery health, build quality, owner data, EPA range, and market pricing
Above average for 2024 EV SUVs (class avg 66 · top 51%)
Personalize this scoreIs a low score bad?
Last scanned 12 days ago
The 2024 Hyundai Ioniq 5 Standard range RWD is rated at 168 hp, 220 miles of EPA range and a 55 kWh battery, and a mid-pack composite means the records-and-test-drive call matters more than the headline.
Score read
A 66/100 makes this worth comparing, not chasing. Do not let the composite hide this split: software and driver-assist score is 83/100, while range and efficiency score is 44/100. Reddit threads cluster around software tech and build quality — verify both against the service records. Documented completion matters more than the recall count itself.
Is it a good deal?
Used examples are running around $28,545 against a $41,800 original sticker, about 68% of new. At that money you want cleaner-than-average service records, completed recall paperwork, and a recent battery report before you sign.
Who this is for
✓ Good for
- ⏱ Daily commuter ≤50 mi/day, predictable charging
✗ Avoid if you are a
- $ Bargain hunter Best TCO, reliability + low depreciation
Gotchas
- Serviceable Recall paperwork has to match the exact VIN.
Mitigation Use NHTSA and the automaker lookup, then require repair records instead of a verbal promise.
- Built in Range is the easy place to overbuy this trim (44/100).
Mitigation Check your commute, winter margin, and fast-charge plan before you assume the EPA number fits your use.
Pre-purchase inspection
- 1 Run the exact VIN through NHTSA and the automaker recall lookup before discussing price.
- 2 Compare the dashboard range estimate with the EPA 220-mile rating after a full charge.
- 3 Confirm how much of the 10-year/100,000-mile battery warranty remains and whether it transfers.
- 4 If road trips matter, run a short DC fast-charge session and watch whether speed tapers normally.
- 5 Map your normal highway route and winter margin against the EPA range before you treat it as a road-trip car.
VIN status first This model has 2 NHTSA recall records. The exact VIN lookup decides whether the car in front of you is clear.
Complaint context This scan found 204 NHTSA complaint records (20.4 per 10K VINs, elevated — verify before purchase). Read the themes below before treating the raw count as the verdict.
Price anchor Current market range is $20,300-$29,050. Use that range to compare listings for the same trim, mileage, and condition.
Pricing & Market Value
A66-rated trim trading 41% below MSRP. Higher discounts on higher-quality vehicles score better — this signal is orthogonal to the TrimIndex composite, not part of it.
Score Breakdown
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Drag the sliders to prioritize what you care about. Your TrimIndex Score recalculates instantly.
Vehicle Specifications
EVs at your price point that match or beat this trim
Price-gated peer set: vehicles within $19.7K–$29.6K market value (±20% of $24.7K). 3 outscore · 3 score within ±2. Mixed across makes — no "spend more, score better" comps.
EV6
- ✓ +90 mi more range
- ✓ Happier owners overall
- ✓ Better safety score
Ioniq 5
- ✓ +83 mi more range
- ✓ Happier owners overall
- ✓ Better bang-for-buck
Kona
- ✓ Notably better build quality
- ✓ Better infotainment UX
- ✓ +41 mi more range
Niro
- ✓ Different trade-offs at the same price
Q4 e-tron
- ✓ Happier owners overall
- ✓ Better bang-for-buck
XC40
- ✓ Better owner satisfaction
The federal $4,000 used-EV credit ended Sept 30, 2025.
But 10 states still run their own used-EV rebate programs — some up to $5,000. Pick your state to see what's available for this trim.
Source & disclaimer
Dealers make ~$8,067 on the average car loan.
After the price is set, the finance manager runs four plays to rebuild margin. Every buyer without a pre-approval is a target. Here's exactly what they run — and what stops each one.
78% of dealer loans carry a hidden +1.13% markup above what the lender actually charges. You never see it — it's buried in the contract. · CFPB
Dealer must match or beat your lender — they can't add margin invisibly. The markup play is dead on arrival.
Once you answer, they stretch the term to hit your number. Median result: $4K less off the price, 12 more months on the loan. · Industry avg
Financing is done. Only the sale price is on the table — and the dealer knows it.
Back-office F&I profit averages $1,975/vehicle, up 8.5% YoY. These products exist — but dealer markup is 4–10x what you'd pay elsewhere. · Dealership Guy
Dealer GAP runs $500–1K. Your insurer sells the same coverage for $100–250 over 5 years. Now you know.
"Your loan fell through — come re-sign." This pulls your APR up +5% on average. It's legal. It works because you've already driven the car home. · Ctr for Responsible Lending
A lender commitment letter means the deal is final. "Pending dealer approval" doesn't apply. You can't be yo-yo'd.
That's 22 months of your car payment — handed to the dealer's finance department for nothing.
Takes 2 minutes. No obligation to use it — but you'll walk in with all the leverage.
Pre-approval is a soft credit inquiry — no score impact. FICO treats all auto-loan hard pulls within 14 days as one, so you can still shop rates at the dealer.
NHTSA Recalls (2)
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2025 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-volt battery, which can result in a loss of drive power.
A loss of drive power increases the risk of a crash.
Check VIN status at NHTSA.govHyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2024 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-Volt battery, which can result in a loss of drive power.
A loss of drive power increases the risk of a crash.
Check VIN status at NHTSA.govNHTSA Complaints (204 total · 20.4 per 10K US vehicles · elevated — verify before purchase)
The issue involved a failure of the 12V battery system in my Hyundai Ioniq 5, which powers essential electronics and allows the vehicle to operate. The battery suddenly lost charge while I was driving, causing the vehicle to become inoperable. The car was towed to a dealership, and the battery and related systems are available for inspection. My safety and the safety of others were put at risk because the failure occurred on the road, forcing me to pull over unexpectedly. This created a hazardous situation, especially in traffic, as it increased the risk of a collision or leaving me stranded in an unsafe area. The vehicle has been taken to a dealership for diagnosis, they had stated there is a recall on this vehicle, iccu unit failed and needs to be replaced. It has been inspected by the dealership service department, but not by police or insurance representatives. Prior to the failure, there were clear warning lights or messages indicating an issue. The problem appeared suddenly while driving, within 5 minutes the car shut down.
The issue involved a failure of the 12V battery system in my Hyundai Ioniq 5, which powers essential electronics and allows the vehicle to operate. The battery suddenly lost charge while I was driving, causing the vehicle to become inoperable. The car was towed to a dealership, and the battery and related systems are available for inspection. My safety and the safety of others were put at risk because the failure occurred on the road, forcing me to pull over unexpectedly. This created a hazardous situation, especially in traffic, as it increased the risk of a collision or leaving me stranded in an unsafe area. The vehicle has been taken to a dealership for diagnosis, they had stated there is a recall on this vehicle, iccu unit failed and needs to be replaced. It has been inspected by the dealership service department, but not by police or insurance representatives. Prior to the failure, there were clear warning lights or messages indicating an issue. The problem appeared suddenly while driving, within 5 minutes the car shut down.
On 3/19/2026. Battery was at 20% SOC. Plugged in my home L2 charger. Car did not start. Took vehicle to dealer the next morning 3/20/2026. It was diagnosed as an ICCU failure. Parts ordered car left at dealer but still waiting on 4/9/2026 for issue to be resolved.
On 3/19/2026. Battery was at 20% SOC. Plugged in my home L2 charger. Car did not start. Took vehicle to dealer the next morning 3/20/2026. It was diagnosed as an ICCU failure. Parts ordered car left at dealer but still waiting on 4/9/2026 for issue to be resolved.
ICCU went bad. Battery warning light appeared a few hours before Vehicle stopped. Vehicle was inoperable and needed to be towed.
ICCU went bad. Battery warning light appeared a few hours before Vehicle stopped. Vehicle was inoperable and needed to be towed.
Diagnosed ICCU Failure. Complete loss of power, went into "turtle mode," then told to stop car immediately and have it towed to the dealership. Vehicle diagnosed several days later as having an ICCU Failure.
Diagnosed ICCU Failure. Complete loss of power, went into "turtle mode," then told to stop car immediately and have it towed to the dealership. Vehicle diagnosed several days later as having an ICCU Failure.
While driving northbound on US-280 freeway, the vehicle experienced sudden deceleration with maximum speed limited to approximately 40 mph. The dashboard displayed a "Check Power Supply" warning. The vehicle required a tow to the dealership. Dealer diagnosis indicates likely ICCU (Integrated Charging Control Unit) failure. This is a known issue affecting multiple Hyundai Ioniq 5 vehicles, with numerous consumer reports of the same failure mode. The sudden loss of propulsion at highway speed created a significant safety hazard though we were able to make it off the freeway with hazards on. However shortly after exiting the vehicle further slowed and eventually died on the side of the road as did the hazard signals.
While driving northbound on US-280 freeway, the vehicle experienced sudden deceleration with maximum speed limited to approximately 40 mph. The dashboard displayed a "Check Power Supply" warning. The vehicle required a tow to the dealership. Dealer diagnosis indicates likely ICCU (Integrated Charging Control Unit) failure. This is a known issue affecting multiple Hyundai Ioniq 5 vehicles, with numerous consumer reports of the same failure mode. The sudden loss of propulsion at highway speed created a significant safety hazard though we were able to make it off the freeway with hazards on. However shortly after exiting the vehicle further slowed and eventually died on the side of the road as did the hazard signals.
Car would not turn on in the morning. Replaced 12v battery. After battery replacement, received "CHECK ELECTRICAL SYSTEM" warning message. Car was able to be driven, but could not be driven faster than 25mph. Taken to dealer where it was confirmed the car's ICCU malfunctioned and would need to be replaced.
Car would not turn on in the morning. Replaced 12v battery. After battery replacement, received "CHECK ELECTRICAL SYSTEM" warning message. Car was able to be driven, but could not be driven faster than 25mph. Taken to dealer where it was confirmed the car's ICCU malfunctioned and would need to be replaced.
On January 28th 2026, I got red warning signs on dashboard said: "Stop vehicle and check power supply" and "12V battery voltage low. Stop safely". I was still in the parking lot, so the issue did not pose any safety issue. The vehicle towed to Hyundai dealership. They confirmed and pre-approved "Replace ICCU +fuse". The part is on 1 month back order. While the dealership initially did not commit to giving me alternate transportation, I insisted and after 6 days, I was able to get a much lower class and smaller replacement vehicle (Hyundai Venue with entry level trim). My vehicle is a lease. Since I'm paying for enjoying the vehicle amenities for a limited time, and my vehicle will not be available for at least a month, I requested Hyundai to reimburse me (or let me skip) lease payments until my vehicle is usable again. So far, the company has denied my request.
On January 28th 2026, I got red warning signs on dashboard said: "Stop vehicle and check power supply" and "12V battery voltage low. Stop safely". I was still in the parking lot, so the issue did not pose any safety issue. The vehicle towed to Hyundai dealership. They confirmed and pre-approved "Replace ICCU +fuse". The part is on 1 month back order. While the dealership initially did not commit to giving me alternate transportation, I insisted and after 6 days, I was able to get a much lower class and smaller replacement vehicle (Hyundai Venue with entry level trim). My vehicle is a lease. Since I'm paying for enjoying the vehicle amenities for a limited time, and my vehicle will not be available for at least a month, I requested Hyundai to reimburse me (or let me skip) lease payments until my vehicle is usable again. So far, the company has denied my request.
“While stopped at a red light my 2024 Hyundai IONIQ 5, the car moved forward slowly the brake pedal became completely unresponsive and would not slow or stop the vehicle. I had to turn off the engine to bring the car to a stop. This is a complete brake system failure on a vehicle with only approximately 10,000 miles that was purchased new on September 28, 2024. This is a critical safety defect that put myself and others at serious risk.”
“While stopped at a red light my 2024 Hyundai IONIQ 5, the car moved forward slowly the brake pedal became completely unresponsive and would not slow or stop the vehicle. I had to turn off the engine to bring the car to a stop. This is a complete brake system failure on a vehicle with only approximately 10,000 miles that was purchased new on September 28, 2024. This is a critical safety defect that put myself and others at serious risk.”
The yellow airbag SRS critical safety restraint wire runs exposed and loose and drooping beneth the front seats with NO space between the harness and the floor (it could have been run above the seat plate or otherwise protected. Mine snagged on something and was torn from the terminal block and has disable the airbag. Hyundai denies it a defective design or assembly and had denied warranty coverage but wants $10,000 to enable it - $6,933 for the part - $3,000 labor. The driver seat moves back and forth automatically when entering and existing - there is no control of the movement and anything more than 1/2 high is able to become tangled and disable the airbag without warning. Hyundai via emails to their legal counsel as well as customer care is fully advised but has denied warranty status or other fix or accomadation. The warrenty for this car - for which coverage has been denied - is in full force per Hyundai's express terms. This is a critical safety issue which upon limited investagation effects numous ioniq5's of multiple years besides the 2024 limited. Note also the 2024 limited has a movable drivers seat foot rest which is prone to sweep matters under the seat when lowered.
The yellow airbag SRS critical safety restraint wire runs exposed and loose and drooping beneth the front seats with NO space between the harness and the floor (it could have been run above the seat plate or otherwise protected. Mine snagged on something and was torn from the terminal block and has disable the airbag. Hyundai denies it a defective design or assembly and had denied warranty coverage but wants $10,000 to enable it - $6,933 for the part - $3,000 labor. The driver seat moves back and forth automatically when entering and existing - there is no control of the movement and anything more than 1/2 high is able to become tangled and disable the airbag without warning. Hyundai via emails to their legal counsel as well as customer care is fully advised but has denied warranty status or other fix or accomadation. The warrenty for this car - for which coverage has been denied - is in full force per Hyundai's express terms. This is a critical safety issue which upon limited investagation effects numous ioniq5's of multiple years besides the 2024 limited. Note also the 2024 limited has a movable drivers seat foot rest which is prone to sweep matters under the seat when lowered.
On [XXX] at [XXX] Pacific Time, I was entering my garage when my vehicle had a surge of acceleration and went through thee wall seperating the garage from the kitchen. There wasn't any emergency braking, even with myself applying the brake, my vehicle refused to stop. My vehicle was totaled by Progressive Insurance.I am now furnishing the Progressive claims name and adjuster"s phone number: Grace Villard 440-910-6852. North Las Vegas Police Dept Accident report #[XXX] It was the Progressive Insurance aduster,vehicle inspector who called me and told me there was a safety issue with my vehicle and declared it a total loss. Whatever aid you can avail me to I'd appreciate.. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
On [XXX] at [XXX] Pacific Time, I was entering my garage when my vehicle had a surge of acceleration and went through thee wall seperating the garage from the kitchen. There wasn't any emergency braking, even with myself applying the brake, my vehicle refused to stop. My vehicle was totaled by Progressive Insurance.I am now furnishing the Progressive claims name and adjuster"s phone number: Grace Villard 440-910-6852. North Las Vegas Police Dept Accident report #[XXX] It was the Progressive Insurance aduster,vehicle inspector who called me and told me there was a safety issue with my vehicle and declared it a total loss. Whatever aid you can avail me to I'd appreciate.. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
On [XXX], I was in New Jersey waiting for my mother to finish shopping. In an effort to preserve battery life, I turned off the engine while waiting. Upon her return, I placed my foot on the brake pedal and started the car. As soon as I shifted the gear into "Drive," the vehicle made an unusual sound and began to roll forward. At no point did I remove my foot from the brake pedal, and I immediately applied more pressure. However, the brakes did not respond. Panicked by the fact that a parked car was directly in front of me, I quickly shifted the gear into "Park" to engage the emergency brake. Fortunately, this action brought the vehicle to a stop, and no damage occurred. I turned the vehicle off and restarted it after which the brakes functioned properly. The experience was extremely alarming. This is not the first time I have experienced this issue. On [XXX], a similar incident occurred while I was stopped at a red light. At that time, I assumed I may not have applied sufficient pressure to the brake pedal. The car rolled forward and made contact with the vehicle in front of me, resulting in a minor accident and a cracked front headlight. Given that this has now happened twice, I am concerned about the possibility of a recurring brake system failure and am worried for my safety and the safety of others. - Brake Failure, it is available for inspection upon request - if I didn’t act quickly and pressed the emergency brake, it would have resulted in an accident. Damage to my car and damage to the car In front of me. And could have resulted in injury to myself. -I have not taken the vehicle to the dealership or service center yet as I have not driven it since the incident. However, I have scheduled an appointment for this upcoming weekend. -there were no warning lamps messages or other symptoms prior to the failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
On [XXX], I was in New Jersey waiting for my mother to finish shopping. In an effort to preserve battery life, I turned off the engine while waiting. Upon her return, I placed my foot on the brake pedal and started the car. As soon as I shifted the gear into "Drive," the vehicle made an unusual sound and began to roll forward. At no point did I remove my foot from the brake pedal, and I immediately applied more pressure. However, the brakes did not respond. Panicked by the fact that a parked car was directly in front of me, I quickly shifted the gear into "Park" to engage the emergency brake. Fortunately, this action brought the vehicle to a stop, and no damage occurred. I turned the vehicle off and restarted it after which the brakes functioned properly. The experience was extremely alarming. This is not the first time I have experienced this issue. On [XXX], a similar incident occurred while I was stopped at a red light. At that time, I assumed I may not have applied sufficient pressure to the brake pedal. The car rolled forward and made contact with the vehicle in front of me, resulting in a minor accident and a cracked front headlight. Given that this has now happened twice, I am concerned about the possibility of a recurring brake system failure and am worried for my safety and the safety of others. - Brake Failure, it is available for inspection upon request - if I didn’t act quickly and pressed the emergency brake, it would have resulted in an accident. Damage to my car and damage to the car In front of me. And could have resulted in injury to myself. -I have not taken the vehicle to the dealership or service center yet as I have not driven it since the incident. However, I have scheduled an appointment for this upcoming weekend. -there were no warning lamps messages or other symptoms prior to the failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
On Monday morning (3/24/2025), my 2024 Hyundai Ioniq 5 lost power and I received the "Check electric vehicle system warning." After that I received another warning that said, "Stop vehicle and check power supply." The car had lost most of its power by this point, but I was less than a mile from my house, so I was able to make it home by turning the car on and off every couple of blocks. It was towed from my house to the dealership the same morning, where it's been ever since. I was just informed that the ICCU needs replacement. My understanding is that this is a prolific problem with this car, and I'm very concerned because my car is less than 8 months old and has less than 8,000 miles on it.
On Monday morning (3/24/2025), my 2024 Hyundai Ioniq 5 lost power and I received the "Check electric vehicle system warning." After that I received another warning that said, "Stop vehicle and check power supply." The car had lost most of its power by this point, but I was less than a mile from my house, so I was able to make it home by turning the car on and off every couple of blocks. It was towed from my house to the dealership the same morning, where it's been ever since. I was just informed that the ICCU needs replacement. My understanding is that this is a prolific problem with this car, and I'm very concerned because my car is less than 8 months old and has less than 8,000 miles on it.
My wife was parking the 2024 ioniq and it lurched forward at a high rate of speed and slammed into another car parked in our driveway and drove that vehicle through our home garage door. She feels certain that her foot was on the brake, but even if she accidentally slipped and appleid the brake the forward collision system should have prevented the accident additionally the impact occurred with such force it is unlikely due to human error as it pushed our very heavy 4Runner back 3 feet and thorough a closed garage door.
My wife was parking the 2024 ioniq and it lurched forward at a high rate of speed and slammed into another car parked in our driveway and drove that vehicle through our home garage door. She feels certain that her foot was on the brake, but even if she accidentally slipped and appleid the brake the forward collision system should have prevented the accident additionally the impact occurred with such force it is unlikely due to human error as it pushed our very heavy 4Runner back 3 feet and thorough a closed garage door.
1. Brake Failure: recently when my brakes stopped responding while driving.The pedal went all the way to the floor, and I barely managed to stop the car. 2. Knocking sound when braking: I started to notice a clunking/knocking sound that would occur when braking and just about coming to a stop.
1. Brake Failure: recently when my brakes stopped responding while driving.The pedal went all the way to the floor, and I barely managed to stop the car. 2. Knocking sound when braking: I started to notice a clunking/knocking sound that would occur when braking and just about coming to a stop.
When driving in i-Pedal, which is a "one pedal driving option", sometimes after pausing the car rolls backs several inches. This appears to be a defect with the powetrain, regenerative braking engine, or otherwise. Hyundai's dealership has been advised of this issue; they have escalated this internally. A car in drive forward should never due to electrical or software reasons be told to move backwards -- which is what is happening here.
When driving in i-Pedal, which is a "one pedal driving option", sometimes after pausing the car rolls backs several inches. This appears to be a defect with the powetrain, regenerative braking engine, or otherwise. Hyundai's dealership has been advised of this issue; they have escalated this internally. A car in drive forward should never due to electrical or software reasons be told to move backwards -- which is what is happening here.
I received this car new on 9/2/2024. I was driving at the freeway speed of traffic on 9/5/2024 when there was a sudden alarm and warning lights flashing on the dashboard with a message that said “Stop vehicle and check brake system.” At this same time, the brakes stopped functioning normally, and I had to use extreme pressure with my foot pressing down on the brake pedal all the way to the floor to have the car slow down even marginally. All of this happened with traffic in front, behind, and on both sides of me going 65 mph! I was very luckily able to maneuver to the right lane and slowly decrease speed without getting rear-ended and without slamming into a car in front of me while going at high speed unable to stop. While waiting for a tow, I left the car on, as I slowly edged forward to a safer stopping location. The flashing red ring around the message to “stop vehicle and check brake system” remained, and then just after moving forward, another message with an amber circle around it said “Check ABS system.” This latter message stayed on for only a short time, then was replaced by the initial message. I had the car towed to the dealership, and their assessment was that there was a failure of the IEP module that communicates between aspects of the braking system. The final service report is attached, confirming the need for replacement of the IEP assembly. I was very lucky to come away from this event with nothing more than a very frightening experience. I hope that this report will initiate a recall to prevent a similar situation happening to someone else, and hopefully avoid tragedy involving serious injury or death.
I received this car new on 9/2/2024. I was driving at the freeway speed of traffic on 9/5/2024 when there was a sudden alarm and warning lights flashing on the dashboard with a message that said “Stop vehicle and check brake system.” At this same time, the brakes stopped functioning normally, and I had to use extreme pressure with my foot pressing down on the brake pedal all the way to the floor to have the car slow down even marginally. All of this happened with traffic in front, behind, and on both sides of me going 65 mph! I was very luckily able to maneuver to the right lane and slowly decrease speed without getting rear-ended and without slamming into a car in front of me while going at high speed unable to stop. While waiting for a tow, I left the car on, as I slowly edged forward to a safer stopping location. The flashing red ring around the message to “stop vehicle and check brake system” remained, and then just after moving forward, another message with an amber circle around it said “Check ABS system.” This latter message stayed on for only a short time, then was replaced by the initial message. I had the car towed to the dealership, and their assessment was that there was a failure of the IEP module that communicates between aspects of the braking system. The final service report is attached, confirming the need for replacement of the IEP assembly. I was very lucky to come away from this event with nothing more than a very frightening experience. I hope that this report will initiate a recall to prevent a similar situation happening to someone else, and hopefully avoid tragedy involving serious injury or death.
Backing vehicle out of driveway and went to engage brakes and they did not engage. began rolling backwards down street with steep grade. Kept stepping on brakes with no response. Had to turn into a parked vehicle to keep from rolling down steep grade and potentially off a substantial cliff. Happened today and dealership said that it may be because the "battery for the brake" had not received a charge from the main battery. Very dangerous and never disclosed. If I had not taken evasive action I could have easily been killed. Car is being dropped off at collision center today but is available for inspection. There were no warnings or other symptoms.
Backing vehicle out of driveway and went to engage brakes and they did not engage. began rolling backwards down street with steep grade. Kept stepping on brakes with no response. Had to turn into a parked vehicle to keep from rolling down steep grade and potentially off a substantial cliff. Happened today and dealership said that it may be because the "battery for the brake" had not received a charge from the main battery. Very dangerous and never disclosed. If I had not taken evasive action I could have easily been killed. Car is being dropped off at collision center today but is available for inspection. There were no warnings or other symptoms.
My vehicle was 4 weeks old. On Friday 6/28/24, my vehicle displayed the following message on the dashboard, "Check Brake System". It disappeared later, and reappeared on the next day. I checked Hyundai's app, Bluelink. There was a alert on Bluelink, "Attention Needed". I opened the alert and it said that there was a Diagnostic Trouble Code, DTC C123501, that originated on 6/30/24. I took the vehicle to the dealership, Hyundai of North Miami, on the next business day, [XXX]. That morning, [XXX], as I started the vehicle, as I stepped on the brake to start the vehicle, the brake was considered "softer" than it was prior and I could feel the brake pedal go nearly all the way down to the base of the vehicle floor. On [XXX] they informed me that the ICCU needed to be replaced. They said that they hoped to have the ability to order the part on 7/5/24, as the computer system needed to do so was not working, and the part could potentially arrive in approximately 1 week. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
My vehicle was 4 weeks old. On Friday 6/28/24, my vehicle displayed the following message on the dashboard, "Check Brake System". It disappeared later, and reappeared on the next day. I checked Hyundai's app, Bluelink. There was a alert on Bluelink, "Attention Needed". I opened the alert and it said that there was a Diagnostic Trouble Code, DTC C123501, that originated on 6/30/24. I took the vehicle to the dealership, Hyundai of North Miami, on the next business day, [XXX]. That morning, [XXX], as I started the vehicle, as I stepped on the brake to start the vehicle, the brake was considered "softer" than it was prior and I could feel the brake pedal go nearly all the way down to the base of the vehicle floor. On [XXX] they informed me that the ICCU needed to be replaced. They said that they hoped to have the ability to order the part on 7/5/24, as the computer system needed to do so was not working, and the part could potentially arrive in approximately 1 week. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
There was a failure of the ICCU (Integrated Charging Control Unit) on my Ioniq 5 that forced me to pull off the highway after my car was no longer able to accelerate past 40 or so MPH. After I pulled off the highway I was then only able to accelerate to around 15 MPH which made it difficult to find a place to safely pull off the road until the vehicle made a complete stop and I had to wait for a tow.
There was a failure of the ICCU (Integrated Charging Control Unit) on my Ioniq 5 that forced me to pull off the highway after my car was no longer able to accelerate past 40 or so MPH. After I pulled off the highway I was then only able to accelerate to around 15 MPH which made it difficult to find a place to safely pull off the road until the vehicle made a complete stop and I had to wait for a tow.
I lease a 2024 Hyundai Ioniq 5 AWD. Prior to a planned trip, the vehicle displayed an electrical system warning. I contacted the dealership and was advised to bring it in. While driving approximately 5 miles to the dealership, the vehicle lost all power including hazard lights, leaving me stranded on a busy road. I contacted roadside assistance and the vehicle was towed to the dealership. The dealership confirmed the failure was caused by the ICCU (Integrated Charging Control Unit). The repair took approximately two weeks. The vehicle was unavailable during this time, requiring a rental car. Hyundai partially reimbursed rental costs but did not compensate for other losses incurred. The ICCU failure is a known widespread issue affecting the entire Hyundai/Kia E-GMP platform across multiple models and model years. A dedicated owner community tracking these failures can be found at [XXX]. The sudden and complete loss of vehicle power including safety systems such as hazard lights while in traffic represents a significant safety risk to the driver and other road users. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I lease a 2024 Hyundai Ioniq 5 AWD. Prior to a planned trip, the vehicle displayed an electrical system warning. I contacted the dealership and was advised to bring it in. While driving approximately 5 miles to the dealership, the vehicle lost all power including hazard lights, leaving me stranded on a busy road. I contacted roadside assistance and the vehicle was towed to the dealership. The dealership confirmed the failure was caused by the ICCU (Integrated Charging Control Unit). The repair took approximately two weeks. The vehicle was unavailable during this time, requiring a rental car. Hyundai partially reimbursed rental costs but did not compensate for other losses incurred. The ICCU failure is a known widespread issue affecting the entire Hyundai/Kia E-GMP platform across multiple models and model years. A dedicated owner community tracking these failures can be found at [XXX]. The sudden and complete loss of vehicle power including safety systems such as hazard lights while in traffic represents a significant safety risk to the driver and other road users. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
ICCU Failure & Main Fuse Broken
ICCU Failure & Main Fuse Broken
As I began a drive cycle, I heard a pop sound and received the “check electric vehicle system” warning associated with ICCU failure. With ICCU failure, if I had continued to drive the 12V battery would have run to zero and the car would have died completely. Vehicle goes to dealer tomorrow for confirmation.
As I began a drive cycle, I heard a pop sound and received the “check electric vehicle system” warning associated with ICCU failure. With ICCU failure, if I had continued to drive the 12V battery would have run to zero and the car would have died completely. Vehicle goes to dealer tomorrow for confirmation.
Known ICCU issue: the 12v battery died for no reason rendering the car undrivable.
Known ICCU issue: the 12v battery died for no reason rendering the car undrivable.
On [XXX], my 2024 Hyundai Ioniq 5 experienced a sudden and complete failure of the Integrated Charging Control Unit (ICCU). The failure rendered the vehicle inoperable without warning, requiring it to be towed to a dealership. The vehicle is currently located at AutoNation Hyundai in North Richland Hills, TX and should be available for inspection upon request. This failure created a significant safety risk. The vehicle lost functionality unexpectedly, which could have resulted in a dangerous situation if it had occurred at highway speeds, in traffic, or in an unsafe location. A sudden loss of power or inability to restart the vehicle presents a clear hazard to both the driver and others on the road. Prior to the failure, there were no clear warnings indicating an imminent critical issue. A 12V battery issue was suspected at the time of failure, and roadside assistance replaced the battery, but this did not resolve the problem. The root cause was later identified as an ICCU failure. The problem has been confirmed by an authorized Hyundai dealership (AutoNation Hyundai, North Richland Hills, TX) on April 10, 2026. The dealership determined that the ICCU requires replacement, with an estimated minimum repair timeline of four weeks due to part availability. The vehicle has been inspected by Hyundai roadside assistance and an authorized Hyundai dealer. No inspection has been conducted yet by the manufacturer directly, law enforcement, or insurance representatives. This issue appears to be consistent with widely reported ICCU failures in Hyundai Ioniq 5 vehicles, suggesting a potential systemic defect that may warrant further investigation and possible recall action. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
On [XXX], my 2024 Hyundai Ioniq 5 experienced a sudden and complete failure of the Integrated Charging Control Unit (ICCU). The failure rendered the vehicle inoperable without warning, requiring it to be towed to a dealership. The vehicle is currently located at AutoNation Hyundai in North Richland Hills, TX and should be available for inspection upon request. This failure created a significant safety risk. The vehicle lost functionality unexpectedly, which could have resulted in a dangerous situation if it had occurred at highway speeds, in traffic, or in an unsafe location. A sudden loss of power or inability to restart the vehicle presents a clear hazard to both the driver and others on the road. Prior to the failure, there were no clear warnings indicating an imminent critical issue. A 12V battery issue was suspected at the time of failure, and roadside assistance replaced the battery, but this did not resolve the problem. The root cause was later identified as an ICCU failure. The problem has been confirmed by an authorized Hyundai dealership (AutoNation Hyundai, North Richland Hills, TX) on April 10, 2026. The dealership determined that the ICCU requires replacement, with an estimated minimum repair timeline of four weeks due to part availability. The vehicle has been inspected by Hyundai roadside assistance and an authorized Hyundai dealer. No inspection has been conducted yet by the manufacturer directly, law enforcement, or insurance representatives. This issue appears to be consistent with widely reported ICCU failures in Hyundai Ioniq 5 vehicles, suggesting a potential systemic defect that may warrant further investigation and possible recall action. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
For the second time, the integrated control unit, ICCU, has failed to this is AFTER being replaced under the recall. The recall solution has not fixed the problem, and is a fake bandaid on a problem that means cars will totally stop working in the middle of the road. This is totally unsafe and unacceptable.
For the second time, the integrated control unit, ICCU, has failed to this is AFTER being replaced under the recall. The recall solution has not fixed the problem, and is a fake bandaid on a problem that means cars will totally stop working in the middle of the road. This is totally unsafe and unacceptable.
My on Thursday, April 2, my 2024 Hyunda Ioniq 5 displayed the "Check Electrical System" message displayed. I had just started the car. I started to lose propulsion on a busy street [XXX] ). I managed to get the car to [XXX] and had to pull over. I had the car towed to the Luther Hyundai, [XXX]. On Monday, April 6, the dealer informed me the ICCU failed. The ICCU and a fuse were replaced. I picked up the car April 7. Although Hyundai has supposedly fixed the ICCU problem, it continues to fail, as mine did. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
My on Thursday, April 2, my 2024 Hyunda Ioniq 5 displayed the "Check Electrical System" message displayed. I had just started the car. I started to lose propulsion on a busy street [XXX] ). I managed to get the car to [XXX] and had to pull over. I had the car towed to the Luther Hyundai, [XXX]. On Monday, April 6, the dealer informed me the ICCU failed. The ICCU and a fuse were replaced. I picked up the car April 7. Although Hyundai has supposedly fixed the ICCU problem, it continues to fail, as mine did. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
2/28/26 Driving home, heard a loud pop, notice is on the dash say check vehicle electrical system. Vehicle begins to slow down and eventually die. Called the manufacturer and had it towed to the dealership. The ICCU had failed.
2/28/26 Driving home, heard a loud pop, notice is on the dash say check vehicle electrical system. Vehicle begins to slow down and eventually die. Called the manufacturer and had it towed to the dealership. The ICCU had failed.
There were no dash warnings. The car slowed to 20MPH and then stopped just as we were about to pull onto a busy freeway. The dash stayed on and then went blank while I waited for the tow truck to take it back to the dealer. The tow truck driver was unable to move the car without jumping the dead battery to get the car to pull up the tow truck ramp. We were told it was an ICCU failure. The car was in the Hyundai dealer for replacement of the ICCU unit for approximately 10 days.
There were no dash warnings. The car slowed to 20MPH and then stopped just as we were about to pull onto a busy freeway. The dash stayed on and then went blank while I waited for the tow truck to take it back to the dealer. The tow truck driver was unable to move the car without jumping the dead battery to get the car to pull up the tow truck ramp. We were told it was an ICCU failure. The car was in the Hyundai dealer for replacement of the ICCU unit for approximately 10 days.
Car won’t start and is completely dead. Doors won’t open, including charge port door. Once you manually unlock car is totally dead inside. Took to dealer for an ICCU replacement under warranty but died again 1 week later. Another ICCU failure? Terrible.
Car won’t start and is completely dead. Doors won’t open, including charge port door. Once you manually unlock car is totally dead inside. Took to dealer for an ICCU replacement under warranty but died again 1 week later. Another ICCU failure? Terrible.
ICCU and its fuse blew randomly while reversing out of a parking spot. A warning light appeared on the dashboard saying "check electric vehicle system" after a loud pop noise came from the rear passenger side. The ICCU charges the 12V battery on board, and when the 12V dies the whole car dies, resulting in the car shutting down suddenly. It's a known issue with this model car. The service center confirmed the ICCU blew when they ran diagnostics.
ICCU and its fuse blew randomly while reversing out of a parking spot. A warning light appeared on the dashboard saying "check electric vehicle system" after a loud pop noise came from the rear passenger side. The ICCU charges the 12V battery on board, and when the 12V dies the whole car dies, resulting in the car shutting down suddenly. It's a known issue with this model car. The service center confirmed the ICCU blew when they ran diagnostics.
ICCU failure. Common problem but Hyundai seems to have no fix despite it happening for years now.
ICCU failure. Common problem but Hyundai seems to have no fix despite it happening for years now.
Based on all symptoms - loud pop followed by limp mode and electrical warning, and inability to charge -- iccu is busted.
Based on all symptoms - loud pop followed by limp mode and electrical warning, and inability to charge -- iccu is busted.
I was driving at 25 mph when I heard a loud pop come from the rear of the car and subsequent warning message came up on the dashboard - "STOP VEHICLE AND CHECK POWER SUPPLY". In an electric vehicle this is a very alarming message to see. I was fortunate to be close to home so I was able to drive home and call roadside assistance for my car to be towed to the dealer. The vehicle has since been diagnosed with an "ICCU" failure. I had no indication or warning that this was going to happen, just a sudden failure.
I was driving at 25 mph when I heard a loud pop come from the rear of the car and subsequent warning message came up on the dashboard - "STOP VEHICLE AND CHECK POWER SUPPLY". In an electric vehicle this is a very alarming message to see. I was fortunate to be close to home so I was able to drive home and call roadside assistance for my car to be towed to the dealer. The vehicle has since been diagnosed with an "ICCU" failure. I had no indication or warning that this was going to happen, just a sudden failure.
I was driving in a parking lot and heard a “pop” sound like a balloon breaking. The Ionic 5 lurched and stopped. A red circle appeared on the dash and said “check electrical system.” I slowly maneuvered the car into a parking spot because there was very little power and turned off the car. I called the Hyundai dealer and they told me to have the car towed to the dealer in Palm Springs, CA. When the tow truck unloaded the Ionic 5 at the dealer, I attempted to move the car into a parking spot so it was out of the traffic lane. I started the car again it again lurched and a yellow circle came up with a turtle icon. Then another red circle appeared “check 12V battery”. The car would not move after that. I went into the Hyundai service department and talked to the service representative. He said he would take the vehicle in for service and I signed the paperwork.
I was driving in a parking lot and heard a “pop” sound like a balloon breaking. The Ionic 5 lurched and stopped. A red circle appeared on the dash and said “check electrical system.” I slowly maneuvered the car into a parking spot because there was very little power and turned off the car. I called the Hyundai dealer and they told me to have the car towed to the dealer in Palm Springs, CA. When the tow truck unloaded the Ionic 5 at the dealer, I attempted to move the car into a parking spot so it was out of the traffic lane. I started the car again it again lurched and a yellow circle came up with a turtle icon. Then another red circle appeared “check 12V battery”. The car would not move after that. I went into the Hyundai service department and talked to the service representative. He said he would take the vehicle in for service and I signed the paperwork.
Pop sound while driving. Lost ability to drive at normal speed. Was able to take car to repair shop and was informed of ICCU failure
Pop sound while driving. Lost ability to drive at normal speed. Was able to take car to repair shop and was informed of ICCU failure
Received multiple "Check Vehicle Electric Systems" on a drive which went away and then got into the car, turned it on, shifted into drive, and heard a pop from bellow before moving at all and the car went into Turtle Mode and blasted warnings. The car completely died with zero power leaving it stranded in sub freezing temperatures and unable to lock the car or open the lift gate to access the trunk area. Eventually it was towed to the dealership and was diagnosed to have a faulty ICCU which took 5 weeks to replace.
Received multiple "Check Vehicle Electric Systems" on a drive which went away and then got into the car, turned it on, shifted into drive, and heard a pop from bellow before moving at all and the car went into Turtle Mode and blasted warnings. The car completely died with zero power leaving it stranded in sub freezing temperatures and unable to lock the car or open the lift gate to access the trunk area. Eventually it was towed to the dealership and was diagnosed to have a faulty ICCU which took 5 weeks to replace.
ICCU failure while driving.
ICCU failure while driving.
I was driving and the car gave an electrical system warning, slowed, and thereafter would not go above about 20mph. Fortunately this happened on a local, low speed limit street. I'd rather not think about what might have happened if this had happened on a highway. The Integrated Charging Control Unit (ICCU) is no longer working as it should. The problem has been confirmed by the dealer/manufacturer service station.
I was driving and the car gave an electrical system warning, slowed, and thereafter would not go above about 20mph. Fortunately this happened on a local, low speed limit street. I'd rather not think about what might have happened if this had happened on a highway. The Integrated Charging Control Unit (ICCU) is no longer working as it should. The problem has been confirmed by the dealer/manufacturer service station.
Loss of power leaving driver stranded
Loss of power leaving driver stranded
ICCU Failure. Vehicle underwent deal TSB for ICCU failure resolution prior to still failing months later.
ICCU Failure. Vehicle underwent deal TSB for ICCU failure resolution prior to still failing months later.
The vehicle experienced a sudden failure of the 12V battery while on the road. The car stopped completely and became inoperable. At the time of failure, there were no tail lights or proper warning indicators working, which created a very dangerous situation, especially in traffic. I was stuck on the road for about one hour waiting for a tow truck. During that time, other vehicles were honking and passing by, increasing the risk of an accident. The vehicle had to be jump-started before it could be moved. Details: What component failed: The 12V battery system failed unexpectedly. The vehicle is available for inspection upon request. Safety risk: Loss of power caused the vehicle to stop on the road with no tail lights, putting my safety and others at serious risk. Reproduction/confirmation: Issue was temporarily resolved with a jump-start, but this is a known issue reported by other owners as well. Inspection: The vehicle has not yet been inspected by the manufacturer or dealer after this incident. Warnings/symptoms: There were no clear warning lights or messages before the failure. The issue happened suddenly without notice.
The vehicle experienced a sudden failure of the 12V battery while on the road. The car stopped completely and became inoperable. At the time of failure, there were no tail lights or proper warning indicators working, which created a very dangerous situation, especially in traffic. I was stuck on the road for about one hour waiting for a tow truck. During that time, other vehicles were honking and passing by, increasing the risk of an accident. The vehicle had to be jump-started before it could be moved. Details: What component failed: The 12V battery system failed unexpectedly. The vehicle is available for inspection upon request. Safety risk: Loss of power caused the vehicle to stop on the road with no tail lights, putting my safety and others at serious risk. Reproduction/confirmation: Issue was temporarily resolved with a jump-start, but this is a known issue reported by other owners as well. Inspection: The vehicle has not yet been inspected by the manufacturer or dealer after this incident. Warnings/symptoms: There were no clear warning lights or messages before the failure. The issue happened suddenly without notice.
ICCU failure
ICCU failure
While driving I received the infamous "Stop vehicle and check power supply" warning, and it was then inoperable, needed a tow to the dealer for ICCU replacement. I can't believe you terminated your initial investigation into this in 2023 because they did a recall (which my car received). That recall did not fix the issue. It is March 2026 and Ioniq 5 and other models with the same electric system are dying on the road at the same rate as before. There is a large percentage of failed cars, and every failure is dangerous. This is a huge safety issue, and is not receiving adequate oversight by the NHTSA.
While driving I received the infamous "Stop vehicle and check power supply" warning, and it was then inoperable, needed a tow to the dealer for ICCU replacement. I can't believe you terminated your initial investigation into this in 2023 because they did a recall (which my car received). That recall did not fix the issue. It is March 2026 and Ioniq 5 and other models with the same electric system are dying on the road at the same rate as before. There is a large percentage of failed cars, and every failure is dangerous. This is a huge safety issue, and is not receiving adequate oversight by the NHTSA.
I was merging onto the highway. I got a warning that I needed to check my electrical system. I was able to back down the highway ramp and park on a side street. Within 20 minutes the car was fully dead and AAA needed to tow it to the dealer. The dealer confirmed that the ICCU needs a replacement. My family is lucky this happened in a place we could safely get to a side street. Had it happened 5 minutes later we would have been stranded on the highway with 2 small children.
I was merging onto the highway. I got a warning that I needed to check my electrical system. I was able to back down the highway ramp and park on a side street. Within 20 minutes the car was fully dead and AAA needed to tow it to the dealer. The dealer confirmed that the ICCU needs a replacement. My family is lucky this happened in a place we could safely get to a side street. Had it happened 5 minutes later we would have been stranded on the highway with 2 small children.
ICCU failure happened for the second time. Car stopped randomly with no Power. Very dangerous, this is a known issue for years now and Hyundai is not doing anything about it.
ICCU failure happened for the second time. Car stopped randomly with no Power. Very dangerous, this is a known issue for years now and Hyundai is not doing anything about it.
Vehicle Details: 2024 Hyundai Ioniq (leased from McGovern Hyundai, Wilmington) Recall Services Notes: ICCU S/W,DTC CHK,&FUSE/REP([XXX]) • 272 Mileage: 10,714 mi Owner: [XXX] What Happened ([XXX]): My Ioniq suddenly died in the center lane on [XXX] near CVS Market, Burlington MA This created a dangerous nighttime traffic jam, The dashboard showed "12V battery voltage low. Stop safely" - the exact same issue fixed last year under recall. Key Details from McGovern Hyundai, Advisor said"100 emergencies waiting" - yet they're still actively selling new cars without capacity to service them? The 2024 car (within warranty) has been in the workshop for past 1 month. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Vehicle Details: 2024 Hyundai Ioniq (leased from McGovern Hyundai, Wilmington) Recall Services Notes: ICCU S/W,DTC CHK,&FUSE/REP([XXX]) • 272 Mileage: 10,714 mi Owner: [XXX] What Happened ([XXX]): My Ioniq suddenly died in the center lane on [XXX] near CVS Market, Burlington MA This created a dangerous nighttime traffic jam, The dashboard showed "12V battery voltage low. Stop safely" - the exact same issue fixed last year under recall. Key Details from McGovern Hyundai, Advisor said"100 emergencies waiting" - yet they're still actively selling new cars without capacity to service them? The 2024 car (within warranty) has been in the workshop for past 1 month. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
According to Hyundai, all recall campaigns needing VIN-specific checks campaigns have been addressed on this vehicle (NHTSA site says it wasn't, Hyundai claims it was on 9/22/2025). Last night (3/3/2026) while driving on an unlit, two-lane country road about 20 minutes from my house, I heard and felt a bang noise from underneath the rear cabin of the car accompanied by a message stating "Stop vehicle and check power supply" on the dash. The car immediately went into a limp mode, reducing speed to ~40mph. After about 0.5 miles, the car further reduced speed to about 25mph (in a 55mph zone). As speed reduced further (no indication of what the speed would be reduced to), I pulled the car off of the road and awaited tow service. As this happened in the evening on an unlit country road, I was forced to wait for assistance along a stretch of road that could have been hazardous. Hyundai's claimed recall campaign work was performed on 9/22/25 with subsequent recurring failure about 5 months later. The dealer cannot confirm the diagnosis or offer estimates of repair time/availability until they see the car (currently scheduled for next week).
According to Hyundai, all recall campaigns needing VIN-specific checks campaigns have been addressed on this vehicle (NHTSA site says it wasn't, Hyundai claims it was on 9/22/2025). Last night (3/3/2026) while driving on an unlit, two-lane country road about 20 minutes from my house, I heard and felt a bang noise from underneath the rear cabin of the car accompanied by a message stating "Stop vehicle and check power supply" on the dash. The car immediately went into a limp mode, reducing speed to ~40mph. After about 0.5 miles, the car further reduced speed to about 25mph (in a 55mph zone). As speed reduced further (no indication of what the speed would be reduced to), I pulled the car off of the road and awaited tow service. As this happened in the evening on an unlit country road, I was forced to wait for assistance along a stretch of road that could have been hazardous. Hyundai's claimed recall campaign work was performed on 9/22/25 with subsequent recurring failure about 5 months later. The dealer cannot confirm the diagnosis or offer estimates of repair time/availability until they see the car (currently scheduled for next week).
Car was acting normally. Suddenly, the car would not accelerate. I was on a small road with no place to pull over. Vehicle said to pull over check electrical system. At great risk to my life and the safety of my children, we managed to get to a safe spot before the entire vehicle shut down. We expect that this was a failed ICCU.
Car was acting normally. Suddenly, the car would not accelerate. I was on a small road with no place to pull over. Vehicle said to pull over check electrical system. At great risk to my life and the safety of my children, we managed to get to a safe spot before the entire vehicle shut down. We expect that this was a failed ICCU.
- What component or system failed or malfunctioned, and is it available for inspection upon request? The ICCU failed. It is not available for inspection. - How was your safety or the safety of others put at risk? Minimally. The car alerted me that it was power-limited and that I should stop the car immediate and get it towed to the dealer. - Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. - Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Yes, the dealer. - Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Yes. The car informed me it was power limited when I started it. When I started driving after about a mile I was instructed to pull over get a tow.
- What component or system failed or malfunctioned, and is it available for inspection upon request? The ICCU failed. It is not available for inspection. - How was your safety or the safety of others put at risk? Minimally. The car alerted me that it was power-limited and that I should stop the car immediate and get it towed to the dealer. - Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. - Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Yes, the dealer. - Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Yes. The car informed me it was power limited when I started it. When I started driving after about a mile I was instructed to pull over get a tow.
On January 31st, 2026, not long after starting a journey in my car, I got a “check electrical systems” warning. I was close to home so was able to turn around and drive home. Just before pulling into the driveway, the warning changed to a “power limited” warning. On Monday Feb 2nd, I had the car towed to my local dealership, where it has been since. The dealer confirmed that it was an issue with the ICCU component which is on back order to this day.
On January 31st, 2026, not long after starting a journey in my car, I got a “check electrical systems” warning. I was close to home so was able to turn around and drive home. Just before pulling into the driveway, the warning changed to a “power limited” warning. On Monday Feb 2nd, I had the car towed to my local dealership, where it has been since. The dealer confirmed that it was an issue with the ICCU component which is on back order to this day.
Showing top 50 of 204 complaints (sorted by severity, most recent first). Full records available via NHTSA ODI search.
What Owners Are Saying
"Tracked my old Ioniq 5 after return - 2 1/2 years 30,000 + miles - battery still 100% On March 28th, I turned in my leased 2024 Hyundai Ioniq 5 Limited AWD (30,580 miles / $41,000 residual) to a local Hyundai dealership in Illinois and leased a new 2026 AWD Limited ($557 OTD including taxes and fees, 36 months, 10K/year). This week, I followed the car on Bluelink. Over three days, it was transported 640 miles and ended up in Richmond, Virginia at a 100% EV reseller — “Recharged” — a CarMax-like company that inspects, reconditions, and, most importantly, tests and rates remaining battery health. For better or worse, I always charged to 100% after roughly 60–150 miles between charges. Recharged’s battery health report, using a Voltest device, shows 100% state of health and indicates that 95% of charging was slow charging — which accurately reflects my home Level 2 charging at 11 kW, with only occasional 350 kW fast charging via Electrify America during the 2 years of free charging that came with the 2024 Ioniq 5. It’s now listed for sale on Recharged.com for $31,998."
"Thanks for your help! Big thanks to everyone for your help! I finally bought a Hyundai Ioniq 5 in Finland, and I’m very happy with it! I really appreciate everyone who took the time to reply—your insights were incredibly helpful. • u/Few-Consideration-17, thanks for explaining the difference between AWD and RWD heating systems. That’s an important factor for Finland, we are freezing cool! :) • u/kimguroo, your advice about the lack of battery preconditioning in the 2022 RWD model was crucial, it was unexpected thing • u/cardinalkgb, really valuable info on the extended range of the RWD / AWD • u/naturtok, your comment on AWD traction and handling reassured me that it was a solid choice. • u/snipsuper415, thanks for the warning about battery preconditioning—it made a difference in my decision. • u/undermark5, your explanation of how preconditioning affects charging was really helpful. • u/South_Butterfly6681, great argument for RWD in warmer climates, but in Finland, AWD seemed like the way to go! • u/zeeper25, your thoughts on trim levels and digital mirrors were really useful. • u/miguel-elote, your story about V2L and hurricane power backup was inspiring! That feature alone makes Ioniq 5 a game-changer. Hope we won’t have hurricanes in Finland, but still :) • u/SyntheticOne, thanks for the detailed breakdown of AWD vs. RWD performance and features. • u/Ztasiwk, your point about real-world range differences between AWD and RWD helped clarify things. • u/DarkXanthos, your insights on HUD, the panoramic roof, and key features helped me choose the right trim. When I touched one with panoramic roof - I refused to choose any other :) • u/DavidReeseOhio, your details about ICCU and Limited trim features were much appreciated. Thanks again to everyone who shared their experience! This is an awesome community—I’m glad I asked here. AWD, 2022, 50000 km, Premium tier (panoramic roof, all assistants, all electronic seats, preconditioning), black"
"Four Years In The Purchase: I still think of our Ioniq 5 as new. In reality it is now four years old. By early 2022 we had been considering other electrified vehicles, both full battery electric and a plug-in hybrid, for about a year. With supply limited, it was difficult to find any to look at... 29915CoSolar replied Feb 19, 2026 Hyundai IONIQ 5 JerryP Mar 5, 2026 Observations on '26 Ioniq 5 vs. the '25 There's not a lot of difference between the two model years, but here's what I've noticed so far. One is for battery health. I took this right after I bought it so it didn't have any data to work with yet."
"#22· Jun 24, 2025\\ \\ \\ (Edited) Welcome to the forums! The EGMP cars ( Ioniq 5, 6, and now 9, EV6, 9, Genesis) are generally great road trippers thanks to their fast DC charging times. Not sure what was going on with the non working Superchargers (older V2 superchargers will not work with non-Teslas so search with either Plugshare or the Tesla App to check which Superchargers you can use) but even the V3 Superchargers will be slower than most other 150+kW fast chargers for your 800V EGMP car. Most here will only use SuperChargers as a back-up when other options are not available. That said it should not have taken an hour to get back to 90%? Yes speed hurts range. The aerodynamic drag is proportional to the square of your speed so the drag at 80 mph is 13% more than 75 mph and as your EV is inherently more efficient than a gas car (most of the energy is not being lost as heat) you will notice the drag more. Driving at 70 - 75 mph will significantly increase the range."
"Hyundai Ioniq 5 major issue: Sudden lurching/braking. Requires $8,000+ fix: Traction Motor Assembly, MCU, Rear Motor Assembly replacement. I'm mainly posting this so that other people with this problem can find info on it. Despite several previous searches, it seems like I'm one of the first few posting about it. We (my husband and I) have a 2022 RWD SE model of Hyundai Ioniq 5 with 160,000 miles on it. We bought it a couple years ago for $30,000 and it had 22,000 miles on it. (Edit: we rechecked, it's at about 53,000 miles a year). For a used car, it was basically new because it was previously a lease car from that same Hyundai dealership. There were no previously reported problems, accidents, and it had a good service history. Despite being driven constantly, it was well taken care of, including coolant changes at the dealership. We serviced it consistently, got new tires as needed, etc. It drove great and it really performed fantastically! Super comfortable, fun to drive. Until... Our issue seemed small at first: The car would randomly lurch, resulting in a sudden loss of acceleration. Imagine the feeling of a heavy gear shift in a non-luxury gas car. Or imagine somebody randomly tapping the brake. Sometimes, but not always and *not* predictably, we would get a yellow warning message if the battery was near full (90%-98%). Something like **\[Regeneration not available, battery fully charged\]**. This was mildly concerning but at most annoying. We tried to figure out what caused it at first...We couldn't tell if weather was a factor, but this happened during cool winter months (about 20-40 degrees F). Car speed, driving uphill or downhill, weight load, etc did not seem to affect the issue frequency. We actually had an OBD2 car code reader, and initially didn't find anything but in the middle of the saga did see a historic error code about motor overcurrent. This went on for about a month. Speed limit function was not turned on. We turned off everything that could be remotely software related too. We were not getting the "power limited" turtle icon (if you are, here's a link to that issue: After we saw the motor overcurrent error we took it in to the dealership service center. But since the issue was triggered randomly / intermittently and the driver couldn't influence frequency, the techs couldn't reproduce it. They didn't charge us and told us to come back if it kept happening. Well, it kept happening, but we decided that we could live with it and still be pretty happy with the car as long as nothing got worse. So of course it got way worse. Within a couple of weeks, the car gave us a critical error and while it didn't shut off, it would not accelerate / maintain spe"
"4128KJ23 replied Aug 9, 2024 Hyundai IONIQ 5 JC007 Jun 20, 2022 Ioniq 5 major Issue 3 month old i5 is now having a concerning issue. The 1st and most important is the i5 has taken off on its own when I selected Nuetral from Drive and will continue to speed up, putting my foot on the brake will slow the car but it's still trying to go releasing the brake it will continue to... 105.3Klcssmanagementandcon replied Dec 24, 2023 Jmu1986 Aug 29, 2022"
"Recall Hyundai Ioniq 5 & other applicable Hyundai vehicles due to faulty materials & design My wife and I leased a 2024 Hyundai Ioniq 5 on March 31. Within 3 months, the vehicle began displaying multiple warnings. Upon taking it to the dealer, we were informed that the wire harness was damaged, allegedly due to rodent activity, and that repairs would cost over $14,500. Hyundai's assumption that this occurred after we took delivery is questionable. We have no history of rodent issues at our residence or workplace. We feel it is highly possible that the damage occurred on the Hundai lot before we took delivery, and the system short was triggered by a heavy rainstorm that occurred the night before the warnings first appeared. Wherever the damage occurred, modern vehicles should be designed to minimize vulnerabilities to external factors, such as rodents. If rodents can easily get access to, and damage, critical wiring, this likely indicates a design flaw. Another issue is the use of soy-based wire coatings, which have long been known to attract rodents. Repair costs in excess of $14,000 for wiring damage are unreasonable and suggest poor mechanic accessibility and/or unnecessary complexity in design. Research online revealed that many other Ioniq 5 owners have reported similar problems. There is an ongoing class action lawsuit involving Hyundai and other automakers alleging that the use of soy-based or plant-derived wiring materials attracts rodents, causing significant damage and costly repairs. Hyundai therefore is well aware of this issue, and yet continues to sell cars with these flaws. The existence of this lawsuit underscores that the issue is widespread, foreseeable, and not due to consumer negligence. The safety and reliability of affected vehicles could be compromised, as critical systems are dependent on intact wiring. Hundai should recall all affected vehicles and repair these issues. Please use the following link to sign a petition to force Hyundai to address these issues:"
"ICCU Issue, 2025 hyundai ioniq 5 limited After a year and 7,000 miles of trouble-free driving, the dreaded ICCU issue finally caught up with me. I heard a loud "boom," the dashboard lit up like a Christmas tree, and I just knew. My poor Ioniq 5 is now at a service center that’s completely slammed, so there's no ETA on the fix. To make matters worse, the dealer gave me a 2026 Kona SEL loaner that reeks so strongly of stale cigarettes it’s giving me a massive headache. Truly a terrible experience all around."
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