Active powertrain failure on my 2022 Ioniq 5 SE, which poses an immediate and severe safety risk. On May 18, 2026, the vehicle suffered a catastrophic loss of power and a complete failure to charge. At Murdock Hyundai of Lindon, technicians diagnosed it with trouble code P1AA600 and recommended a total high-voltage battery pack replacement at a cost of over $44,000. Immediate Fire & Safety Risk: The dealership technician explicitly warned me that if I continue to attempt to drive or plug in the vehicle, it will cause an electrical fire. Visible Electrical Arcing: The service technician stated that they physically witnessed an electrical arc occur when connecting the vehicle's high-voltage charging components. The technician's diagnosis strongly points to a catastrophic internal short circuit or a failed Power Relay Assembly (PRA) within the high-voltage housing. The company completely stopped working and Hyundai would not help. This has been an ongoing issue with other cars too. I tried multiple times working with both the deal and Hyudnai.

Source: NHTSA complaint ODI #11759832 · view all complaints for this vehicle at nhtsa.gov

This report is an addendum to report 11762283 that was made yesterday. The vehicle allows driving with the rear liftgate ajar, however under some circumstances it engages the EPB when the vehicle comes to a stop while the gear state is still Drive. The gear state of the car remains in Drive when the EPB engages. This presents the driver with the choice, in the middle of the road and possibly in the middle of an intersection, of either exiting the vehicle and rearranging contents of the vehicle to allow the rear liftgate to close, or activating the accelerator to continue driving with the traction motor overpowering clamped EPB. Neither option is safe. I have attempted to reproduce this unsafe state of the vehicle and was successful in one case and unsuccessful in another. My hypothesis for the differentiating factor is the top speed reached prior to decelerating to a stop: in the first case, 13mph, and in the second, 15mph. I have attached a single frame from one of two videos, of the successful case. The instrument display shows gear state is Drive, the car is moving, high torque is being applied by the traction motors (but typically the screen center shows ADAS state, and there is no indication of instantaneous traction torque), and the EPB is engaged. The car is in the middle of an intersection at the time.

Source: NHTSA complaint ODI #11762370 · view all complaints for this vehicle at nhtsa.gov

Factory installed Michelin Primacy AS tires with acoustic foam lining. All 4 tires had acoustic foam coming loose and wadding up inside the tire, resulting in extreme vibrations (similar to a severely unbalanced tire) approaching and at highway speeds making vehicle difficult to control. Initially had the tires re-balanced in an attempt to fix before the problem was fully understood, but that solution did not last. Ultimately had the tires dismounted and foam pulled out, then rebalanced.

Source: NHTSA complaint ODI #11729148 · view all complaints for this vehicle at nhtsa.gov

The contact owns a Nuna Car Seat, Model Name: Rava, Model Number: (N/A), Model Type: (N/A), Manufactured Date: October 2023. The contact stated that the harness buckle was easy to release while attempting to secure the child in the car seat. The contact received notification of NHTSA Campaign Number: 24C002000 (Child seat). The manufacturer was made aware of the failure. The contact stated that the repair kit that was sent to repair the recall was an inadequate repair and did not address the safety concern regarding the harness buckle. The manufacturer was notified of the issue but offer no additional assistance. The contact was also denied a replacement car seat despite the car seat being under warranty.

Source: NHTSA complaint ODI #11687618 · view all complaints for this vehicle at nhtsa.gov

Experienced ICCU failure under everyday conditions, driving home from an appointment. Car had sat in direct sun for 30 mins, and starting the car and driving away with the AC fully blasting is when the failure occurred.

Source: NHTSA complaint ODI #11748510 · view all complaints for this vehicle at nhtsa.gov