2022 Hyundai Ioniq 5 transmission & drivetrain problems

Related recalls

No recalls on file.

What owners say

1. Filed Oct 2, 2026WAElectrical SystemFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   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…

   NHTSA complaint #11768588 · source
2. Filed Sep 5, 2026WABrakesAcceleration & Cruise ControlTransmission & Drivetrain

   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…

   NHTSA complaint #11762370 · source
3. Filed Apr 27, 2026NYElectrical SystemTransmission & Drivetrain

   2022 Ioniq 5 SE. ICCU failed April 2026 with around 29325 miles. Original owner. Purchased June 2022. I had the original Recall 272 software update performed back in February 2025, but the hardware still failed a year later. **Timeline of Failure:** 1. **Phase 1 (The Trigger):** Level 2 charging stopped unexpectedly before reaching the limit. It tripped my house breaker and unfortunately killed my Level 2 EVSE (Grizzl-E) with a stuck relay. Didn't think too much of it…

   NHTSA complaint #11734110 · source
4. Filed Apr 22, 2026MOElectrical SystemTransmission & Drivetrain

   The car lost power while driving and an electrical warning was displayed on the screen. The issue was later diagnosed as a failure of the ICCU and blown fuse that had been previously recalled and replaced. Now it needs to be replaced again.

   NHTSA complaint #11732961 · source
5. Filed Apr 19, 2026WIElectrical SystemFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   Finished charge, low battery indicator on the dashboard. started to drive, within mile "pull over immediatedly" well documented and continued flaw with vechile ICCU component (that I had the software "patches" applied). Car will no longer accept charge (so now has the remaining charge before being a 3 ton brick) and cannot not be driven as if the 12v battery loses charge (which it will) I will lose powersteering and brakes.

   NHTSA complaint #11732158 · source
6. Filed Mar 25, 2026FLElectrical SystemTransmission & Drivetrain

   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.

   NHTSA complaint #11726962 · source
7. Filed Mar 17, 2026MAElectrical SystemTransmission & Drivetrain

   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.

   NHTSA complaint #11725058 · source
8. Filed Mar 11, 2026NYElectrical SystemTransmission & Drivetrain

   While driving my IONIQ 5 it flashed a power limited warning, went into turtle mode, and then experienced a total loss of power. The 12V battery was dead.

   NHTSA complaint #11723501 · source
9. Filed Feb 24, 2026CATransmission & Drivetrain

   There was a failure of the Integrated Charging Control Unit (ICCU) on my Hyundai Ioniq 5. We were driving home from the beach, approximately 1 mile away. When I turned the car on and started driving home, the dashboard lit up with an error and the vehicle turned on the "turtle" mode, which limited my speed. I managed to make it into my subdivision where it finally died and I was unable to get it into garage. Vehicle would not turn on, would start up momentarily, lots of…

   NHTSA complaint #11720190 · source
10. Filed Feb 21, 2026CAFuel, Hybrid & EV PropulsionOther / UnknownTransmission & Drivetrain

    I was traveling on the freeway when I got a warning saying “check electrical.”i started to pull over on the freeway and my car went into “turtle mode “and I made it off the offramp but almost got rear ended. I was half a mile from home so I limp home in a tow truck towed off. It was determined it is the ICCU.

    NHTSA complaint #11719583 · source
11. Filed Feb 20, 2026NYElectrical SystemFuel, Hybrid & EV PropulsionTransmission & Drivetrain

    Q: What component or system failed or malfunctioned, and is it available for inspection upon request? A: ICCU failed - Not available for inspection (at least at this time, but willing to try and make it work). Q: How was your safety or the safety of others put at risk? A: The ICCU (Integrated Charging Control Unit) is a safety-critical component subject to federal recalls 24V-204 and 24V-868. (My vehicle had all recalls performed prior to this failure.) The failure occurred…

    NHTSA complaint #11719374 · source
12. Filed Feb 17, 2026NCFuel, Hybrid & EV PropulsionTransmission & Drivetrain

    While driving on the highway during a rainstorm, the high voltage fuse on my car's Internal Charge Control Unit blew and the ICCU itself failed. This rendered the vehicle inoperable as soon as I managed to get it to the shoulder. It took two weeks to repair, and I had to argue with Hyundai's corporate lines for almost six months before the offered a partial reimbursement for their device failure.

    NHTSA complaint #11718532 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology