2025 Hyundai Ioniq 6

NHTSA COMPLAINT — SHORT VERSION I am reporting a persistent, unresolved, safety-related steering defect in my 2025 Hyundai Ioniq 6 (leased 10/12/2024). Beginning in September 2025 at approximately 15,412 miles, the vehicle exhibits: (1) uncontrolled steering wheel shifting left and right at highway speeds; (2) hard pulling to the left when accelerating or decelerating; and (3) the vehicle swaying or jerking within its lane without driver input. I described the issue to the dealer as "pretty dangerous to drive" — this language is documented in Repair Order #XXX. Despite 6+ documented repair attempts over 9 service visits from September 2025 through May 2026, the defect remains unresolved. Repairs attempted include: two 4-wheel alignments, road-force balancing, steering angle sensor calibration, front camera calibration, new front view camera installation, and a complete steering gear box (R-MDPS) replacement. The vehicle was out of service for 129 documented days. CRITICAL ADMISSION: Dealer Repair Order #XXX(11/5/2025) explicitly states that Hyundai's Technical Service Bulletin procedures for this steering defect only apply at speeds of 40 MPH and below, and that "above that speed there are too many variables." The defect occurs at highway speeds above 40 MPH. This is a written admission that no manufacturer-approved repair procedure exists for the defect as experienced. Hyundai Techline Case #XXX was opened in January 2026. After Techline involvement and new camera installation, the technician's own repair order states "concern still present" after road testing. Hyundai Motor America corporate case #XXX was opened, and Hyundai has now stated they cannot process a buyback or lemon case. The vehicle remains unsafe to operate at highway speeds INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6

"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, 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)?