2024 Hyundai Ioniq 5

These are unverified consumer reports filed with NHTSA, shown as submitted.

• 12/31/2025· POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM

  While driving, I heard a loud pop in the rear passenger side and subsequently, the dashboard showed an error to "stop vehicle and check power supply". After driving about 15 minutes, another error showed on the dashboard "12V battery voltage low. Stop safely". After coming to a stop, the vehicle completely shut off and would not turn back on. A tow truck was called and my vehicle was towed to a Hyundai dealership. The vehicle is now at the service center at a Hyundai dealership. The dealership confirmed it was an ICCU failure. While there was not a crash or any injury, the known defect from Hyundai left my wife, my [XXX] daughter, and me, stranded 60 miles away from home, in the middle of the night. Luckily we were pulled over safely and not in the middle of the highway. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

• 12/28/2025· POWER TRAIN,ELECTRICAL SYSTEM

  The ICCU failed while driving. A loud pop occured then a red warning light came up asking you to stop the vehicle and check the power supply. The car went into turtle mode where I could at best drive 25 miles per hour. This car was part of a recall last year to prevent this issue, however only a software fix was performed. Luckly I was able to get the car home on a very cold day.

• 12/28/2025· POWER TRAIN,ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL

  The vehicle is less than 1 years old. Had 91% charge left. Turned in the car as usual. Turned in heated seats and heated steering wheel as the outside temp was 34 degrees. A pop noise occurred and my entire dashboard flashed like a Christmas tree saying electrical system failure. Pull over safety. The cars speed was reduced to 20 mph. This was extremely scary as this happened on a main road where the speed limit was 55. The ICCU failed according to the dealer. This has been a common issue among Ioniq5 cars and the manufacturer has failed to fixed this issue. This car presents a high failure rate of the ICCU computer that controls the entire car. Once this chip fails, the car can not be driven and it must be towed back to the dealership. This is not a one off. Hyundai also quietly remove the remote start feature to activate the heated seats. They must know that turning on the heated seats might trigger an overload causing possible risk of iccu failure.

• 12/27/2024· ELECTRICAL SYSTEM

  12V battery dead. It is only 5 months and the start battery is dead. I needed jump start and the problem reoccurring. I hear this is a common problem for all HI 5 models. So why it is not part of recall? Dealership is asking money for replacement. Repeated reoccurring dead battery issue.

• 12/27/2024· ELECTRICAL SYSTEM

  Hyundai has installed faulty 12v batteries in the Ioniq 5 series cars. The OEM battery fails, resulting in an emergency stop or failure to start. Hyundai refuses to acknowledge the faulty batteries, yet the resolution found by numerous consumes to resolve the issue has been to purchase and install the correct 12v battery. Despite going to the dealership to seek a remedy, they refused to replace the faulty battery. They asked for the dead car to be towed into them, but Hyundai roadside assistance is unable to have towed a dead EV. 5 times the car died in the first 6 months of ownership. Hundreds if not thousands of US owners online have reported the faulty 12v issue to Hyundai, received no working repairs, and ultimately replaced their batteries at their cost.

• 12/20/2025· ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM

  The ICCU on my car failed after hearing a loud pop (fuse blown) while driving on the freeway. This was an incredibly dangerous scenario in which I went from 70 mph to 25 mph, in an area with no shoulder. Hyundai is aware of the issues with the ICCU and I believe they should expand the recall to include EVERY Hyundai Ioniq 5 and 6. Interestingly, the technician at the dealership states in the summary of service that my car is subject to the recall due to the fault code (P1A9096). Why did I have to experience this failure to be subject to recall? My car should be subject to the recall/service based on VIN, but according to [XXX] it is not. Also at issue is the time it took to Hyundai's tech line to work with my dealership, and the time they are suggesting to provide replacement parts. My car was delivered via tow truck to the dealership at 11:16 AM on 12/11/2025 and I got the message regarding the diagnosis and solution to my car's issue on 12/19/2025 at 10:01 AM. It should not take 8 days to diagnose this issue, nor should it take 2 weeks for parts that are a known issue for Hyundai. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

• 12/20/2024· VISIBILITY/WIPER

  It is impossible to see through the back window when it rains. It has no wiper--and unlike other cars, it is not aerodynamic and does not push rain off the back windshield. When it rains, you cannot see anything. Due to the location of the backup camera, it also becomes wet and you cannot see anything when doing in reverse through the window or backup camera when it's raining.

• 12/18/2025· POWER TRAIN,FUEL/PROPULSION SYSTEM

  When I started driving my car a warning to check the electrical system came on the display and the speed of the car dropped to less than 25 mph. The road we were driving on was over 45mph without a safe shoulder. After it was towed to the dealer, they diagnosed that the ICCU had failed and replaced it and a fuse. This was after all recalls and other software updates were performed many months ago.

• 12/18/2025· ELECTRICAL SYSTEM

  On Monday Dec 15 I was on the Coranado bridge in San Diego heading on the island. A warning flashed about the electric system. Then, towards the end of the bridge, the car immediately slowed down suddenly and I could feel the regenerative breaking. I had to time or opportunity to get over. By the grace of God, traffic started to slow as we got near the end of the bridge and the car was able to go roughly 20 MPH on the side roads with my foot all the way down on the accelerator pedal. With my hazard lights on, I was able to drive closer to where I was meeting my wife and find a parking lot to turn into so a tow truck could get me. It was terrifying. I’m alive by some miracle and I’m very lucky I was meeting my family and they weren’t with me.

• 12/17/2025· POWER TRAIN,UNKNOWN OR OTHER

  My 2024 ioniq 5 has no recall but they have a well known issue where the ICCU does not charge the 12v as expected. this results in loss of power. In my situation, i was driving on the freeway at 65MPH when i got the low 12V battery message and my car slowed down and I was not able to accelerate at even street speed. I was fortunate enough to pull the car over from the left lane to the right shoulder as the traffic was light. This could have easily resulted in an accident. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

• 12/15/2025· ELECTRICAL SYSTEM

  The contact owns a 2024 Hyundai Ioniq 5. The contact stated that the message "Check Electric Vehicle System" and DTC: P0C7300 - System Motor Control Problem Detected had been displayed intermittently on the instrument panel. The contact stated that the DTC notification was persistently displayed on the Hyundai Blue link Mobile App. The vehicle was taken to the dealer several times, but the contact was informed that the failure could not be duplicated because the messages and the DTC were no longer displayed. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, and the contact was informed that she would receive a call back within 2-3 days. The failure mileage was approximately 3,000.

• 12/15/2024· ELECTRICAL SYSTEM

  Received orange warning “Power limited”. A minute or so later received RED warning “Stop vehicle and check power supply”. Less than a minute later the car stopped and turned off completely, even the HAZARD lights would not flash. Tow truck was unable to tow because the car could not be taken out of park, wheels locked. Also, as soon as the warnings started the power steering failed and the car was very difficult to maneuver. The combination of difficult maneuvering followed by unable to move could be VERY dangerous in the wrong situation.

• 12/10/2025· POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM

  While accelerating onto a road with cars approaching from behind, vehicle entered limp mode and was restricted to 25 MPH. I was forced to leave the roadway to avoid a collision with the vehicle behind. The street this occurred on has a speed limit of 40 MPH. The vehicle's normal acceleration was sufficient to ensure a safe gap to the approaching car, but the time it took to recognize and react to the unexpected behavior reduced this gap. The dealer diagnosed this as an ICCU failure related to safety recall 272. All prior recalls were complete at the time of the incident.

• 12/09/2025· ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM

  The ICCU failed while driving which left me with an undriveable vehicle on the side of the road. The vehicle was towed to the dealership and repaired; however, the part is the same and may fail again.

• 11/28/2025· SERVICE BRAKESCrash

  “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.”

• 11/25/2024· SERVICE BRAKES

  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.

• 11/22/2024· POWER TRAIN,SERVICE BRAKES,ENGINE

  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.

• 11/19/2024· ELECTRICAL SYSTEM

  Went to charge at AC charger and found that it would not charge. Tried another charger and same thing occurred. Car would say 0.3kW and than stop charging. Dealer said ICCU issue.

• 11/14/2023· ELECTRICAL SYSTEM

  Another complain for investigation PE 23-011. First car was DOA, second had an exploding pop sound and no longer charges, car is no longer usable, only 200 miles.

• 11/12/2025· ELECTRICAL SYSTEM

  While driving, heard a pop sounds from back seats. Then a warning appears on front screen : Check Electric Vehicle system. The car lost all power and stopped beside the road. The car has only 14K kms on it.

• 11/10/2025· ELECTRICAL SYSTEM

  ICCU failure

• 10/31/2025· ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM

  Hyundai is ignoring the fact that many Ioniq 5 have an ICCU defect that happens without warning and can leave you stranded with a bricked car that you can’t drive. They have a software recall for it that I had performed at the dealer. This did not solve the problem because it failed yesterday and I was stranded far from home. They continue to put this same part in the 2025 model. I have a 2024. Brand new cars are having the same problem which requires the whole unit to be replaced with the same unit that can go bad. I know people who it has happened to multiple times. They need to issue a recall that replaces the entire unit with a redesigned one. Not the same exact part. Everyone of these cars is a ticking time bomb that can leave a person stranded.

• 10/31/2024· ELECTRICAL SYSTEM,SERVICE BRAKES

  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.

• 10/22/2024· UNKNOWN OR OTHER

  Car will randomly start giving warning messages (while driving or parked). Messages include pull over and check brake system, lane departure system failure, check battery, the speedometer will read 0 while driving, among multiple others. Dealership has ' fixed' multiple times, replacing fuses, bumper, sensors, but the problem keeps happening

• 10/09/2025· AIR BAGS,SEAT BELTS

  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.

• 10/07/2024· LANE DEPARTURE

  When on a highway with lane-keeping assist engaged, the car sometimes steers into the left-hand lane. It seems to happen most often when the road bends to the right. The car straddles the lane divider into the fast lane to the left. This occurs in otherwise perfect conditions: sunny, dry days on roads with clear white stripes demarking the lanes. I must fight with it to get it back in the proper lane. This is very dangerous. I'm convinced it will cause a high-speed crash. Another driver I spoke with said she had seen the same problem and wouldn't use the lane guidance because of it. I'm extremely cautious when I use it now. The problem has happened multiple times.

• 09/24/2025· FORWARD COLLISION AVOIDANCE

  The forward collision system will intermittently erroneously detect objects in front of the vehicle while stopped or in motion. While driving on the freeway, this will cause the car to engage the emergency braking system endangering those in and around the car. While stop to the stoplight, this causes the front detection alarm to go off. The dealership has reproduced the error and tried software updates and replacing sensors, but the problem persists.

• 09/04/2025· VISIBILITY/WIPER

  The tubing that is used to connect the windshield washer reservoir to the nozzles that deliver the washer fluid to the windshield is prone to rodent activity. This tubing has been punctured by rodents twice now - with one intervening tube replacement. I have to replace the tubing again today. It has been less than two weeks since I last replaced the tubing. The replacement tubing was purchased from a Hyundai dealership. It appears that this will be an ongoing issue that will impact the operational safety of the vehicle.

• 09/03/2024· VISIBILITY/WIPER

  Overnight, the windshield spontaneously developed a huge crack going from the A-pillar to halfway across the windshield. The car was parked at the time.

• 08/25/2024· ELECTRICAL SYSTEM

  I was driving on the highway and a message appeared that said “check electrical system”. The power in the car then completely bottomed out and I could not go above 25 mph.

• 08/15/2025· ELECTRICAL SYSTEM,SERVICE BRAKES,FORWARD COLLISION AVOIDANCECrash

  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)

• 08/12/2025· ELECTRICAL SYSTEM

  Last March 12 2025 I heard a pop coming out of a parking lot and warning message appeared. I was able to drive at decreased speed to the dealer. They diagnosed it to be an ICCU failure. It took 6 weeks to get it replaced.

• 08/07/2025· POWER TRAIN

  ICCU failure, resulting in 12v discharge and complete immobilization of car. The car's safety systems gave sufficient warning to allow me to get somewhere safe -- but the nature of the failure also disabled it's ability to maintain a call with blulink to coordinate a pickup. Luckily my cell also had service.

• 08/05/2024· ELECTRICAL SYSTEM

  I am writing to report serious issues with my 2024 Hyundai Ioniq 5 SEL, purchased on May 24, 2024, with approximately 3,000 miles driven. These problems have raised significant concerns about the vehicle's reliability and safety. The first incident occurred on July 22, 2024. I attempted to start the car in my driveway, and while the engine turned on, the vehicle suddenly lost power, and all electrical components became non-functional. There were no error messages, and the display showed all systems as normal. It seemed to function normally after turning the vehicle off and on again, but this unexpected power loss was alarming. The problems continued today, August 3, 2024. At around 8 AM, when I tried to start the car again, the system flickered twice and then shut off entirely. I contacted roadside assistance, and the car required a battery charge for about six hours before it could start again. This evening, while driving at approximately 15 miles per hour in my subdivision, the vehicle suddenly lost power after only a few minutes. This abrupt power loss posed a significant safety risk, and I was fortunate to avoid an accident. I contacted the dealer who sold me the vehicle, but they informed me that they could do nothing remotely and advised me to have the car towed to their location. It is extremely concerning and frustrating to encounter such severe issues with a new vehicle. Given the repeated and unpredictable nature of these problems, I urge Hyundai to take immediate action to investigate and resolve these issues. I am also concerned that other owners may be experiencing similar problems, indicating a potential widespread issue with this model. I am seeking urgent assistance to address these issues and ensure the safety and reliability of my vehicle. Thank you for your prompt attention to this matter.

• 08/04/2025· ELECTRICAL SYSTEM

  The contact's daughter owns a 2024 Hyundai Ioniq 5. The contact stated that the vehicle had been delayed in starting on several occasions. Additionally, the contact stated that while the contact's daughter was driving at an undisclosed speed, the vehicle suddenly stalled. The contact stated that the failures had occurred intermittently. The vehicle was taken to the local dealer, where it was diagnosed that the battery had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was unknown.

• 08/02/2024· ELECTRICAL SYSTEM,SERVICE BRAKES,FORWARD COLLISION AVOIDANCECrash

  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.

• 07/31/2025· ELECTRICAL SYSTEM

  I am the owner of a 2024 Hyundai Ioniq 5 with Vehicle Identification Number [XXX] I purchased/leased this vehicle on [XXX] from Stockton Hyundai. Over the last couple of months my vehicle has experienced an ongoing charging defect: it only charges on Level 1 but fails to charge properly using Level 2 or DC fast chargers, which significantly impairs its use, value, and convenience — a key feature advertised for this vehicle. The issue has not been confirmed by the dealer as they have not been able to figure out why it’s happening and the vehicle has not been inspected by anyone else I also feel like it’s a safety risk because I’m at risk of being stranded. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

• 07/31/2025· ELECTRICAL SYSTEM

  The car was down to 16% charge on the battery so I put it on the 220 v charger at my house. The next day I went to leave and removed the charger from the car and started it. I heard a pop and thought the garbage truck doing weekly pickup had run over something but now I think it was a noise from the failed component. Got in the car and started it and saw a yellow circle with the words “check electrical system”; I had seen this error message once before following a software update to the ICCU back in September 2024 [turned the car off and back on and the error went away] so I did the same thing again but the error didn’t go away instead the circle warning on the screen went to a red circle and read “stop the car and check the electrical system”. Went inside the house and called the closest Hyundai dealership [in Longmont since the one in Boulder closed with no warning] and after some back and forth they told me to have the car towed in since the 12 v battery charging system wasn’t working and it controls many things like power steering and regeneration braking and can cause a loss of power making the car undriveable and unsafe. Towed the car in and got a diagnosis of a failed ICCU module. The part is on order and I have no idea when it might actually come in and get installed. Hyundai is aware of problems with the ICCU and 12 v charging system and has issued several software recalls; this ICCU problem is all over the Hyundai Ioniq 5 forums and is a widespread issue with the Ioniq 5. I’m lucky this failure occurred at my home versus when I was driving or many miles away or at night cuz I would have been stranded.

• 07/20/2025· ELECTRICAL SYSTEM

  On 4/7/2025 the vehicle came to a dead stop while driving about 45 mph on a highway entrance. I was able to get the car to the edge of the highway but it was completely inoperable. It required towing to the nearest dealer. After a day diagnosis it was determined that the ICCU and 12 volt battery had failed. I was stranded on the edge of the highway while waiting for a tow. The problem was confirmed by the dealer, replacement parts were ordered and the repair completed seven weeks later. A warning message appeared so briefly that I could not read it before the car failed completely.

• 07/15/2024· ELECTRICAL SYSTEM,ENGINE

  The car lost propulsion and displayed Check Vehicle Electric System. Now the it’s sitting at the dealership for over 30 days waiting for parts.

• 07/14/2026· STEERING

  Vehicle steering or at least power steering failed catastrophically. Started with some electronic sounds at extremes of turning radius but subsequently failed completely and rendered car undriveable. Hyundai repair center attributed this to "excessive dirt and dust" or some external force, but was unable to substantiate or demonstrate any damage to parts they say need replacing. Ultimately this remains undiagnosed with regards to cause but dealer clearly identifies need to replace P/S motor and rack and pinion assembly. Insurance inspection documents no sign of external involvement in the failure. No warning lights/messages. Problem is repeatable. While failure would have been a safety risk at higher speed, it went from "noise at edge of turning radius" to "cannot steer the car" at a point in time where the car was moving at low speeds.

• 07/12/2024· ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM

  Auto lost all power. No instruments visible. Propulsion system would not charge. Thankfully vehicle at a stop when occurred. Unable to drive. Car as dead as a home in a power outage. Everything dark. Nothing electrical worked. Had to use emergency manual key to enter vehicle. Tow truck driver said this was the 4th Hyundai Ioniq 5 he towed that week. All dead. Car at dealer awaiting diagnostics, which because of backlog, could take 3 or 4 weeks.

• 07/11/2025· POWER TRAIN

  I was driving 10-15km/h over speed bump suddenly my car going backwards I took a glimpse on my display panel and it showed that the car was in D mode. This is seriously can cause accident!

• 07/11/2025· ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM

  I have a lease on a 2024 Hyundai Icoprniq 5. There is a recall due to ICCU issues. We had this car in service but it did not fix the issue. The car is now sitting dead in my driveway and will not move. Hyundai is refusing to do anything to fix the problem.

• 07/09/2026· ELECTRICAL SYSTEM

  On 5/27/26, when the car was parked in parking lot, received an alert on dashboard, "check electric vehicle system", when the car was turned on. The car would not shift in to drive or reverse so had to get towed to nearby Hyundai dealership. The EV system was recalibrated and test driven 122 miles to verify proper operation. Then on 6/23/26, when driving on road received an alert on dashboard "power limited". The car would not accelerate and had to get it towed again to same dealership. The dealership performed tests on ICCU and 12V battery but came back negative.

• 07/06/2025· POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM

  I had ICCU software recall done in spring 2025 then Vehicle died twice while driving on highway, ...suddenly. "warning 12 volt batt low pull over" stranding my family twice on highway. could not operate anything. Mc Govern Hyundai said it was fixed after 44 days. 2 days later failed again .dealer said it was ok again but would not replace ICCU or 12v batt. the amber light that indicates when !2v batt. is being charged would never come on. they said they found nothing wrong.

• 07/04/2024· ELECTRICAL SYSTEM,SERVICE BRAKES

  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)

• 06/25/2025· ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM

  The car made a loud popping noise and immediately started displaying electrical system fault errors. The car propulsion stopped within 15 seconds and was not able to be moved after. I was on the freeway and just barely made it over to the side. Car was not able to be towed by a regular tow truck because the electrical system was gone and the car was not able to be shifted into neutral. Jump starting the battery did nothing. Car was sent to the dealer who confirmed that the car sustained an ICCU failure which controls the entire battery electric system. The ICCU had to be replaced. There is already a mandatory recall on the vehicle regarding the ICCU. The recall was to check the status and confirm that the ICCU was working properly and in good condition. I had this recall done BEFORE the ICCU failed, so even though the recall check was performed, the ICCU still failed and put me in a very dangerous situation. The car is 6 months old and has 6200 miles on the odometer.

• 06/24/2026· ELECTRICAL SYSTEM

  During routine driving, the vehicle suddenly displayed an electrical system. Error code followed several minutes later by a 12-volt battery error. The vehicle was stopped and turned off. When turned back on all warnings disappeared and vehicle was returned to service for approximately 3 MI before warnings appeared again. Vehicle was then parked as it entered limp mode with a maximum speed of 11 mph. manufacturers roadside assistance was called and arrived to jumpstart the 12-volt battery which resulted in the vehicle turning on but not charging despite sufficient charge in the high voltage battery. Vehicle was stranded in a secure parking lot after hours with Windows unable to be closed and doors unable to lock. The vehicle is immobilized due to being unable to put the vehicle into neutral to move it to a suitable location for a tow. Vehicle was certified by dealership as a certified pre-owned vehicle approximately 45 days ago. All listed recalls have been checked and no undue stress has been placed on the vehicle since purchase. Vehicle stranded to adults and one toddler in 80 plus degree heat without any ability to remove the car to a safe location or secure transportation to an appropriate business.

• 06/22/2025· POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM

  Dear NHTSA, On [XXX] at [XXX] CST, my 2024 Hyundai Ioniq 5 SEL experienced a sudden ICCU failure. While reversing into my driveway, I heard a loud “pop,” followed by warning messages: “Stop vehicle and check power supply” and “Check electric vehicle system.” A DTC scan showed code P1A90(96). The car became inoperable and had to be towed to a Hyundai dealership. The dealer confirmed ICCU failure and replaced both the ICCU and fuse on 6/17/2025. However, the replacement was not a redesigned part—it was the same model that failed. I purchased this vehicle in March 2025 as a Certified Pre-Owned with ~12,000 miles. All recall-related ICCU updates had been completed before this incident. There were no warning signs before the failure. This failure could have been dangerous had it occurred on a highway, in extreme weather, or far from help with my [XXX] daughter with me. I no longer feel safe driving this car. Hyundai’s recall remedy is clearly not effective, and they continue replacing defective ICCUs with the same flawed units. They have not disclosed the root cause or implemented a permanent fix. I urge NHTSA to: Investigate ongoing ICCU failures despite recall compliance. Mandate a stop-sale of affected vehicles until a real fix is found. Require Hyundai to disclose the root cause. Consider a buyback program if no safe solution is available. This is a serious safety risk. These failures will continue without regulatory action. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)