2022 Hyundai Ioniq 5Recalls, problems, MPG & safety

“The Integrated Charging Control Unit (ICCU) has failed repeatedly on this vehicle. It has been replaced three times by Haselwood Hyundai dealer since the vehicle was purchased new in 2021. Dates: 9/8/2023, 12/19/2024, 9/30/2025 at approximately 17k, 35k, and 50k miles. Each failure presents the same way: the ICCU stops charging the 12V battery from the high-voltage pack, the 12V drains, and warning messages appear on the dash: Check Electric Vehicle System. The vehicle then loses power or will not start and becomes inoperable [on numerous occasions the vehicle lost power/would not start at, leaving family occupants stranded. The vehicle also required jump starts on at least 25 occasions. Safety risk: an ICCU failure can disable the vehicle without meaningful warning. A loss of 12V power affects power steering assist, braking assist, hazard lights, and airbag readiness, and has left us stranded away from home as the car has to be jumped every time. Each failure was diagnosed and confirmed by a Hyundai dealer, which replaced the ICCU under warranty. Repair orders documenting all three replacements are available on request; the replaced units were retained by the…”

“Complaint Summary: Mandated federal safety recall remedies performed on my vehicle have directly induced a cascading, critical safety failure of the vehicle's high-voltage propulsion management system. My 2022 Hyundai IONIQ 5 (VIN: [XXX]) was brought to an authorized dealer on XXX at 200,224 miles to complete safety recall Campaign 272 / NHTSA Recall 24V-204 (ICCU Software Update and Fuse Inspection). After receiving this software flash, the vehicle's electrical charging system failed (DTC P0D5C00), requiring a full hardware replacement of the Integrated Charging Control Unit (ICCU) on XXX. 142 miles after the physical replacement of the high-voltage ICCU, the vehicle displayed an emergency battery malfunction message on the dashboard. Diagnostic scans reveal active fault code P1BC700 in the Battery Management System. The manufacturer's dealership is now charging $1,909.77 out-of-pocket to replace the Power Relay Assembly (PRA).The current recall modifications for the E-GMP platform are failing to safely mitigate high-voltage current spikes. The electrical strain or servicing procedure required by the recall has directly compromised the adjacent power relays.…”

“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…”