2025 Hyundai Ioniq 6

On April 10,2026 I heard a pop while driving and a check electrical system light came on, my vehicle lost power while driving. This appears to be a common problem with ioniq5 and 6 going back years. Also failure in their ICCU and 12 volt batteries.A veh. Losing power unexpectedly could lead to a collision, injury or worse.my Ioniq 6 was recently serviced and only has 14,794 miles.I respectfully urge the national highway traffic safety administration to: 1.continue and expand investigation into electrical system failures in the Hyundai ioniq 6 and 5. Also 2. Ensure that affected vehicles are properly repaired with permanent solutions or the company should have to buy back the unsafe defective vehicles. Also 3. Require clearer and more immediate warnings to drivers regarding the risk of sudden power loss. Drivers should not have to keep experiencing this safety risk, after all these years of it being reported.

The contact owns a 2025 Hyundai Ioniq 6. The contact stated that as his wife was pulling into the residence driveway at approximately 3 MPH, the vehicle inadvertently accelerated. The contact stated that the front end of the vehicle crashed into the side of the house. The contact stated that there was damage to the house and damage to the front bumper of the vehicle. The contact stated that his wife was unhurt but was shaken up by the crash. The contact stated that as a precaution, he drove her to the emergency room for examination and was cleared by the hospital. The contact stated that he called the police, who wrote a report. The vehicle was not taken to a dealer or mechanic. The vehicle was not diagnosed and was not repaired. The manufacturer was not informed of the failure. The failure mileage was 6,112.

"While traveling in fast-moving traffic, my 2025 Hyundai IONIQ 6 suffered a catastrophic electrical system failure and an immediate loss of motive power. The vehicle instantly entered a 'limp mode' and dropped to a maximum speed of 11 mph, creating a life-threatening hazard for myself and surrounding drivers. There were no warning lamps or symptoms prior to this sudden failure. The vehicle was towed to a certified Hyundai dealer (Ricart Hyundai), where a diagnostic scan confirmed a failure of the Integrated Charging Control Unit (ICCU) with error code DTC P1A9096. This failure is directly related to the known issues in Recall 257. The dealer has confirmed that the replacement ICCU is currently on indefinite backorder with no estimated time of arrival (ETA). The vehicle and failed component are currently at the dealership and available for inspection upon request."

ICCU failure. Sudden total electrical shutdown. According to this site, there was a recall filled but NOT COMPLETE since November 2024! We are now February 2026. There has been NO warning issued to Hyundai consumers about this. When the ICCU fails, it puts consumers at risk. When it happened to me, there was no shoulder to pull onto. Because there was a snowstorm that morning, the flatbed tow truck did not come for 3 hours. My car was in the shop for 3 days. The bottom line is that the failure of communication about this defect puts consumers at risk!

THIS CAR WAS PREPPED BY COCONUT CREEK HYUNDAI AND I AM BEING TOLD BY YOUR CUSTOMER SERVICE DEPARTNEMTN THAT THERE MIGHT HAVE BEEN SOME DEBRIS ON THE WIPERS THAT CAUSED THE SCRATCHES / HOW IS THAT MY FAULT HYUANDI HAS WALKED AWAY FROM ANY RESPONSIBILITY / IN FACT THEY ASKED ME IF I CHANGED THE WIPER BLADES / I JUST GOT THE CAR 5 MONTHS AGO WORST CUSTOMER SERVICE

I TOOK POSSESSION OF THIS VEHICLE ON SEPT 1, 2025 SINCE DAY 1 THE BLUELINK APP STATES THAT THE CAR NEEDS SERVICE I SPOKE TO HYUANDI CUSTOMER SERVICE & THEIR ONLY RECOMMENDATION IS THAT I GO BACK TO THE DEAL / I SAID TO THEM JUST YESTERDAY (FEB 12, 2026) SO LET ME GET THIS STRAIGHT / AM I SUPPOSED TO GO BACK TO THE DEALERSHIP EVERY DAY I THINK A RECALL IS NEEDED TO SEE WHAT IS GOING ON WITH THESE HYUNDAI CARS MY ORIGINAL CASE # IS XXX

On the evening of February 11, 2026, my 2025 Hyundai Ioniq 6 SEL experienced a complete ICCU failure while I was traveling with my minor son. The vehicle became fully inoperable and left us stranded on the side of the road at night, in the middle of a winter storm. I was forced to call for a tow truck, wait in dangerous conditions, and arrange emergency transport for myself and my child. The vehicle was towed to Visions Hyundai of Henrietta, located in Rochester, New York. That was over three weeks ago. As of the date of my complaint, my vehicle remains at the dealership. I have been told that the replacement ICCU part is on indefinite backorder, with no estimated delivery date provided. I am left making full monthly payments on a vehicle I cannot drive.

My leased 2025 Hyundai Ioniq 6 experienced a sudden malfunction resulting in loss of vehicle operation. The vehicle has been at the dealership with delayed diagnosis and no clear repair timeline provided. This appears to be a safety-related defect involving the electric system. I am aware of multiple reports and recent news coverage describing similar failures in Hyundai/Kia electric vehicles related to ICCU (Integrated Charging Control Unit) defects, which can cause sudden battery discharge and loss of propulsion. Media reports indicate that this defect has affected numerous vehicles and, in some cases, repairs have taken more than a month due to part availability and diagnosis delays. My vehicle experienced similar symptoms, including loss of power / inability to operate normally, and the dealer has not been able to promptly resolve the issue. This appears to be a broader safety-related defect rather than an isolated incident.

The car displayed “Check Electric Vehicle System”. The 12‑V battery stopped charging. The vehicle could not be driven very far or very fast. The car had to be towed to a Hyundai dealer.The ICCU was diagnosed as failed. The ICCU has been an ongoing issue with Hyundai EVs.

My car horn has ceased to work. I have not taken it in to be fix yet, but feel it is a safety issue.

ICCU failure which causes a fuse to pop. Because it is an EV the car cannot be driven

My car is less than a year and a half old with only about 10k miles and last night I had the ICCU failure. I already had the software update to "fix" this safety recall 272 but it obviously didn't work. I am a female with a young daughter who was almost stranded in a bad neighborhood as suddenly my car wouldn't go faster than 15 miles an hour and I looked it up and knew it would just stop suddenly at some point. I only had a quick 1 min warning when I turned on my car that said "Check Electrical Vehicle System" then switched to "Stop vehicle and check power supply". My car is now at the dealership and I was told they have to put the same type of part back in as there are no new versions of it. Which is why others have had this happen multiple times.

Warning came on the dashboard to check electrical and stop driving which I did and started up the car again and was only able to drive another minute until the entire car lost power while trying to accelerate and I had to have an emergency pull off into a strip mall off of a busy street car was towed although the Hyundai Road assistance did not know that the dealer they towed to was not able to work on electric vehicles, and therefore had to be restored. At this time, I was told it was an ICCU issue. The part was ordered, and I am waiting to hear back from the dealership.

While driving "check electrical system" warning appeared and vehicle went to limp mode limited to 20mph while on a 40mph roadway. Drove an additional few miles to try and reach home and vehicles completely died, no power. Towed to dealer. DTC P1A9096 indicates ICCU failure

Battery is not charging to full capacity. The ICCU has been replaced and the battery is still not holding a full charge.

ICCU Failure

The ICCU died and the fuse on my traction battery blew. Both had to be replaced. I realized I had the problem when I started my car and it showed "Check Electric Vehicle System". When I tried driving it, I was limited to speeds below 45MPH, then eventually 25MPH, and eventually it would enter "turtle mode" and I could limp along at a couple MPH. I found the car would no longer charge the 12V accessory battery and it would no longer receive a charge from my home charger.

I leased the 2025 Hyundai Ioniq 6 in April of 2025, in November of 2025 the car charging time started to increase when using L3 charging stations. The normal charging time would be 15 minutes for the battery to reach 80% capacity and an additional 30 minutes for the battery to reach full capacity. After November it took 20 to 30 minutes for the battery to reach 80% capacity. On January 2, 2026, I was charging the car at a L3 station and when charging was completed the car no longer worked. The car displayed the message “Please unplug the charger to start the car.” But the car was not plugged in. I tried to trouble shoot for 20 minutes and had to call a tow truck for the car to be towed to Hyundai. The car sat at the Hyundai dealership for a week with the battery power draining from even though it was not turned on nor was it drivable due to the error message. According to the Hyundai website, there was an open recall on this car for the ICCU, and I show no record of this issue being fixed for this car prior to leasing it. The car is at the dealership still and has not been repaired.

-ICCU failure, identified by dealer service department as the cause of catastrophic failure. -The car suffered a catastrophic failure on a 2-lane country road in Princeton NJ on [XXX] at approximately [XXX] at night in 20 degree temperatures. Every function except blinkers (temporarily functional) ceased to work. I waited in the car, without heat, for an hour before service arrived. The car could not be moved and was left in the road until 3:00 am, when the towing company I paid towed the car to my driveway a mile from the failure site. -My safety was at severe risk while I waited in the car. -Dealer replaced ICCU assembly with the same part, with the possibility of repeated failure. -Warning messages appeared somewhat over a mile before catastrophic failure. The car slowed to 11 mph. -Hyundai has known of the potential for catastrophic ICCU failure in their electric cars since 2022. I took possession of this 2025 model in March 2025. I was never informed of any recall, although it appears that a recall was issued at the end of 2024. -Hyundai has denied compensation for irresponsibly, with knowledge of the potential failure, subjecting me to a hazardous, life-threatening situation. -Anecdotally, of the 4 Ioniq owners I know, 3 have experienced ICCU failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The ICCU assembly and high voltage fuse blew/broke at 6,255 miles as I was driving on Interstate 294. That immediately reduced the vehicle maximum speed to about 25mph, causing a hazard to myself and following drivers who were traveling at 55mph or more. I limped about 3 miles to the next exit, where Hyundai arranged for a tow and warranty service to replace the faulty parts. There were no prior symptoms or warnings. As this is both a known, ongoing (several years)Hyundai issue and apparently unrelated to driver behavior/practices, perhaps an NHTSA query will inspire Hyundai to actually resolve this issue instead of simply replacing the part(s)?