2022 HYUNDAI IONIQ 5 Complaints

Upon starting the car, it made an audible "pop", and the dash indicated to check the 12V power supply and "low available power" with a turtle indicator, and an "EV!" warning lamp. The car struggled to accelerate out of the parking lot, and within a minute, the dash displayed a "power failure" message, and the car lost all ability to accelerate while on the road, forcing an emergency pull-over. The 12V system completely failed while waiting for a tow truck, complicating the already poorly-documented and complicated process of disengaging the vehicle's automatic parking break for loading onto the flatbed trailer. The dealership performed diagnostics and confirmed an ICCU failure. After waiting for parts and technician availability, the ICCU was replaced with part number 36400-1XAA0-AQQH "ICCU Assy" and returned to me 32 days later.

I am filing this complaint regarding Hyundai Motor America's failure to complete a vehicle repair in a timely manner on my 2022 Hyundai Ioniq 5 (VIN: [XXX] ), which has been at Hyundai of Leander, an authorized Hyundai service center in Leander, Texas, since September 2025 — more than six months — awaiting a replacement high-voltage battery. (Case No. XXX) I purchased this vehicle in September 2025 from Apple Sport Imports in [XXX] . The vehicle was sent immediately to Hyundai of Leander for an open repair and I never took full delivery. I was informed the replacement battery was initially allocated to a different dealership and a new order could not be placed until approximately January 2026. As of March 2026, Hyundai's own case manager confirmed in writing on March 30, 2026 only that they are working to determine the battery's arrival date with no confirmed completion date provided. Since November 2025, I have made 5 monthly payments of $513.92 totaling $2,569.60 on a vehicle I have never driven, with a sixth payment of $513.92 due in April 2026. I am also flagging a potential records discrepancy for NHTSA's awareness. When I checked my VIN on Hyundai's recall lookup website, Recall 272 — covering an ICCU software update, fuse replacement, and ICCU replacement on 2022-2024 MY IONIQ 5 vehicles — is listed as a Closed Campaign with a completion date of October 24, 2025. My vehicle was physically at Hyundai of Leander awaiting parts on that date and remains there today. I do not know whether this recall is related to the current open repair, but I am flagging the potential discrepancy for investigation. When I raised this with Hyundai of Leander's service department, I received no clear explanation. I am requesting that NHTSA investigate Hyundai Motor America's recall fulfillment practices and the accuracy of their recall completion records for this vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On January 19, 2026, the vehicle lost power while driving and required a tow to the local dealership. After inspection, the dealership determined that the ICCU was at fault and needed to be replaced. The ICCU part was backordered. The vehicle was inoperable for 6 weeks as we waited for the part to be available and installed.

ICCU failure occurred while vehicle was operating at 30 MPH, after being charged the night prior and unplugged in the morning at 100% capacity. A sudden pop was heard, and the vehicle indicated that an electrical fault would require the vehicle to be shut down as soon as safely possible. The vehicle went into limp mode and would not exceed 25 MPH.

Car gave a "electrical error" message and would no longer charge at any charger. It slowly lost power and eventually stopped driving fully on the highway. The dealer says the ICCU is responsible. I inquired if this recall was not fixed already, they said it was but can still happen and the ICCU is not resolved truly, the software is just a temporary fix according to them. The vehicle will need a new ICCU.

My ioniq 5 EV experienced an integrated charge control unit (ICCU) failure. A couple days prior to complete failure, we were unable to charge the vehicle using either level 1 or level 2 chargers. Our local Hyundai service center advised us that it was likely an ICCU failure and was unsafe to drive, due to the possibility of sudden loss of drivetrain power. The vehicle was towed to our local service center (CardinaleWay Hyundai El Monte in El Monte, California) and the ICCU completely failed after arriving at the service center. The vehicle is still at the service center and we have been advised that there is a nationwide shortage on replacement parts, with backorders of weeks to months.

The ICCU failed while 300 miles from home. I was unable to charge the car with level 2 charging to get home. Luckily level 3 charging still worked. The ICCU breaking can also disrupt propulsion, so I'm lucky it didn't break to that degree while driving. The dealership ultimately replaced my ICCU. There were no warning signs. In fact, the car didn't even throw a code or error. It simply wouldn't charge.

The ICCU has failed for the 2nd time in a year requiring lengthy repairs. The car cannot be driven with a faulty ICCU. The ICCU is responsible for converting AC power to DC for and stepping it up to 800 volts to charge the primary battery. It is also responsible for keeping the secondary 12 volt battery charged.

Car lost propulsion in the middle of the road and would drive over 20 MPH. ICCU failure, which nearly caused me to get into an accident.

Iccu failure cause vehicle to lose power in the middle of the interstate, Hyundai has no solution for the ongoing problem