NHTSA Complaint #11715638 — 2025 HYUNDAI IONIQ 5

On [XXX], the vehicle was unable to be started - no lights, no power, unable to open the doors. I called Hyundai Roadside Assist and they sent someone from AAA a few hours later who was able to "jump start" the vehicle. I took it to the dealer, Manly Hyundai, on December 17th, 2025 and they determined nothing to be wrong with either the battery or the electrical system. On [XXX], while driving from home to the local grocery store, the car presented a warning light on the dash and the “gas pedal” stopped working. I was able to coast into a parking lot at which point an even larger warning light appeared and the vehicle then lost all electricity completely. I again called Hyundai Roadside Assist and they sent someone from AAA a few hours later who determined that the car was unable to be “jump started” and would have to be towed to the local dealer, Manly Hyundai. The dealer reported back to me that the component that failed is called an “ICCU” and is some kind of controller related to the charging and motors of the electric drivetrain. It is available to be inspected at the dealer currently, Manly Hyundai. My safety was put as risk because the car became essentially inoperable while driving downhill and gave no warning signs ahead of time before the lights lit up on the dash and I lost control. The dealer has confirmed that it is an issue with the “ICCU”. The dealer has inspected the component at their service department. The first warning light that appeared came at the same instant that the vehicle lost drive power. The second warning light that appeared came at the same time that the vehicle lost all electricity entirely. There were no indications that something might be wrong with the vehicle prior to the vehicle actually producing symptoms of being undriveable. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)