2023 Hyundai Ioniq 6

I was pulling into a parking spot and my vehicle suddenly lurch forward, and I had to slam on the brakes quickly, scraping the front of the curb. I checked there was no warning lights. I checked the floor mat, and this was not impeding the accelerator pedal I am certainly I did not accidentally hit the accelerator instead of the brake.

The fuel door/charge door would not open. Conditions were such that I was safe and had sufficient range without charging, but were I farther from home this could have left me stranded. The problem has not been confirmed by a dealer, other service center, manufacturer, police, or insurance representative, though a friend was not able to open it either/confirmed the issue was not "user error". There were no warnings. The incident occurred after rain in the prior evening, followed by below freezing temperatures. The fuel/plug door opened in the afternoon when temperatures were warmer.

On March 19, 2026 my Hyundai Ioniq 6 broke. It was clearly the ICCU problem. The car went into turtle mode with a maximum speed of 22 miles an hour and told me to get to a safe area , stop the car and have it brought in. It was brought to my local Hyundai dealer and a few days later they confirmed it was the ICCU problem. This is a safety issue. Fortunately I was 1 mile from my house and did not get stranded. Hyundai has had four years to fix the problem and obviously they have not done so. The car was a 2023 with about 23,000 miles on it.

I WAS DRIVING AND MY ELECTRICAL WARNING LIGHT CAME ON AGAIN FOR THE SECOND TIME IN A YEAR. I WAS TOLD IT WAS THE ICCU LAST YEAR AND THEY SAID IT WAS FIXED AND WOULDNT HAVE A PROBLEM AGAIN. I HAD TO RENT A CAR FOR ALMOST TWO MONTHS. THE SAME PROBLEM AGAIN WITH THE ICCU HAPPENED ABOUT A MONTH AGO AND THEY STILL HAVE MY CAR. IN A ANOTHER GAS RENTAL CAR.

I leased a 2023 Ioniq 6 electric car on September 2023. Since leasing the vehicle, the vehicle has been towed four times for the same problem, the parking brake malfunctions rendering the vehicle unusable. I have multiple photos and videos documenting this. This has happened either after parking the vehicle and attempting to turn it off, or after turning on the car after being parked. The first three times this happened the vehicle remained in neutral and would not change into any other gear. The car would not turn off or lock. The last time it happened again the car stayed in neutral and would not change gears, but I was still able to turn it off and lock it. Below is a summary of all the times the car was towed and how many days it was in the dealer. 1.December 12, 2025 (towed to dealership #1) to December 19, 2025: 8 days, no action taken, unable to find the cause of the problem 2.December 20, 2025 (towed to dealership #1) to December 29, 2025: 10 days, no action taken, unable to find the cause of the problem. Note the car failed again the day after it was returned to me on December 19. 3.January 2, 2026 (towed to dealership #2) to January 13, 2026: 12 days. Changed the 12V battery and replaced the VCU, vehicle control unit as an educated guess based on conversations with the Hyundai engineering team as the initial diagnostic scan failed to pinpoint the problem. 4.March 12, 2026 (towed to dealership #2). As of tMarch 15, 2026 the car is in the dealership for repairs for the same problem. Since this problem is likely related to the electric car’s electronics, it has been both challenging to diagnose, and extremely unpredictable and dangerous when it happens without any previous actionable warnings. The fact that the parking brake malfunctions and cannot engage, and that in addition the car gets stuck in neutral, is an extremely serious safety concern that could result in an accident, injury or death.

The check electric vehicle system error message showed up on my dashboard, meaning the iccu has failed

Horn fuse has blown 4 times in 5000 miles leaving the vehicle unsafe to operate. Problem is reproduced and confirmed. First started in November 2025 and 4th fuse was placed January 2026.

January 28, 2026 The vehicle has stopped in the middle Of the street with sign «loss of power, check your battery» or something like that and after few attempts to turn it off and on it went to Accessory mode. After 15-20 minutes it completely died. So unsafe with kids in the car during extreme cold temperatures. Free Hyundai road assistance- quoted me 3 hours or so, i had to pay for towing elsewhere. No doubts its iccu, since tow truck driver attempted to jump start and from dead it went to accessory mode and died again almost instantly. I read on the Facebook about iccu problem of Hyundai, if this is engineering defect it should be remedied.

I was driving, there was a loud pop, then warnings popped up on the dash and I lost power. I was able to limp the car back to my house, because I had just left. I assume it is the ICCU. I’m reporting this because it is a known issue that Hyundai has not seemingly been able to repair. With the pedal to the floor, I got up to 25 mph. Luckily, I was near home and not on a highway.

Iccu 12 v battery failed

The vehicle popped up a screen that said check power source. Then within 30 seconds went into limp mode said power was limited and couldn't drive faster the. 25mph in the middle of a highway. By the time I pulled over to the side of the road my car was dead. Ive been trying to get Hyundai and the dealership to dignose the issue. Based on the error codes I was given it appears to be a dead iccu and 12v battery. I am in a ioniq group on Facebook and over the last week of being in it I've counted over 50 dead iccu on this group alone. All in one week.

The iccu failed. The car went into check power mode the. Into slow mode then died on the highway. Hard to ah e it jumped to take it to the dealership only to find out the 12v and iccu died

A failure of the ICCU resulted in a maximum speed of about 25 mph and eventually a total loss of power.

The contact owns a 2023 Hyundai Ioniq 6. The contact had received a notice of NHTSA Campaign Number: 24V868000 (Electrical System), and the vehicle was taken to the dealer, where the Integrated Charging Control Unit (ICCU) software update was completed. The contact stated that while driving 50 MPH on the highway, the vehicle stalled. The contact was able to pull over to the shoulder of the road. It was unknown whether a warning light had illuminated. The vehicle failed to restart and was towed to the dealer, where it was diagnosed that the Integrated Charging Control Unit (ICCU), and the 12-Volt battery had failed and needed to be replaced. The dealer ordered the parts. The contact stated that the recall remedy had failed to correct the safety issue. The vehicle was not yet repaired. The manufacturer was notified of the failure and informed the contact that parts would be shipped to the dealer for repair. The failure mileage was approximately 14,000.

The horn from my car has stopped working entirely. By having this system fail it endangers me from other clueless drivers on the road.

The contact owns a 2023 Hyundai Ioniq 6. The contact received notification of NHTSA Campaign Number: 24V868000 (Electrical System), and the vehicle was taken to the dealer, where a software update was performed. The contact stated that the vehicle was charged at the residence, and the contact received notification through the Mobile App that the big battery charge was 80 percent. The contact stated that while attempting to start the vehicle, the vehicle failed to start. The vehicle was towed to the dealer, where it was determined that the 12-Volt battery was completely drained and needed to be replaced. The contact stated that the recall remedy was intended to ensure that the big battery charged the 12-Volt battery during a charging session, but the recall remedy had failed to correct the issue as intended. The dealer informed the contact that the battery needed to be replaced prior to another attempt to perform the recall repair. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 55,000.

The ICCU on my 2023 Hyundai Ioniq 6 failed on December 5, 2025 after 19,616 miles. Luckily, the car was parked in my driveway when this occurred. If the car was in motion when the ICCU failure occurred it would have been very dangerous. The car cannot be driven. The car's system shows Hyundai Diagnostic Trouble Code (DTC) P1A906. The problem has been confirmed by a dealer. A new ICCU has been ordered. The car is under warranty and the dealer provided a loaner car while my car is being repaired.

Honk not working fuses are fine second time taking it to dealer to repairs honk at 33k miles

ICCU Failure, unable to charge the 12v battery despite having all recalls associated with this already done. The error code is DTC P1A9096. The car is unable to drive with this error because it is at risk of shutting down while driving.

The car horn malfunctioned. I was not able to warn other drivers I was approaching and they were about to hit me. The component was inspected and replaced over a year ago in May 2024 under the vehicle warranty. No warning lights appeared when it happened.