NHTSA Complaint #11718559 — 2024 HYUNDAI IONIQ 5

ICCU failure: confirmed by dealership, submitting for your records - while driving the morning of 2/11/26 in Evansville, IN a warning message appeared on the dashboard stating 'Check Electric Vehicle System' followed by a rapid deceleration. Luckily there was not a vehicle behind me as they would have rear ended me. This failure occurred without warning and presented a significant safety hazard, leaving the vehicle stranded in traffic until I was able to restart it. Vehicle went in to turtle mode upon restart, would not go over 20mph at first then I stopped the car, restarted it again, it would move for 15-20 seconds before going in to turtle mode again and now it will not go over 10mph - interestingly, when I would stop and put it in reverse, the vehicle would move 10-20' and then come to a very abrupt stop as the entire vehicle shut off - had to tow the vehicle to the Hyundai dealership in Evansville Indiana where the ICCU was confirmed has having failed