2025 HYUNDAI IONIQ 5 Complaints

The ICCU (Integrated charging control unit) failed, causing my car to go into "Limp mode" where it was unable to accelerate over 44 mph. This put my safety at risk as I was unable to accelerate on the freeway. The Hyundai dealer confirmed the problem and it is still there, with no estimated time for repair due to a shortage of replacement part. It was not inspected by the police or insurance. There weren't any warnings or symptoms prior to the failure. Hyundai has issued recalls for 2022-24 models for this problem but not the 2025, although it appears they have not fixed this for 2025 models.

The vehicle's ICCU failed after 7 months and 7k miles of driving. This is a known issue that Hyundai has not addressed or issued a recall for.

Vehicle's charging system failed when vehicle was remote started. Specifically the ICCU failed, and drained the low voltage system of power. Vehicle would not move, and left me stranded. Currently, Vehicle is at a dealership awaiting inspection for warranty repair. Multiple warning lights, DTC P1A9096.

The integrated charging control unit (ICCU) failed on [XXX] rendering the vehicle inoperable and powerless. Warning lights did illuminate on the dash shortly after a popping sound, along with warning sounds. This occurred just minutes before I was going to enter a freeway. The vehicle was towed to the nearest Hyundai dealer (Hanlees Hilltop Hyundai, Richmond, CA) on Jan. 7. The ICCU failure was diagnosed on Jan. 9. Hanlees Hilltop ordered replacement ICCU parts on Jan. 9. (At Hanlees, my customer # is [XXX]. The work order # is [XXX]. I checked with my service advisor at Hanlees Hilltop today (Feb. 10); the parts remain on backorder with no estimate for arrival. I take note that the ICCU was subject to recall in 2022, 2023, and 2024 Hyundai Ioniq 5 models. I am inquiring as to whether there will be a similar recall for 2025 Ioniq 5 models. About an hour of research online strongly suggests that ICCU issues remain a continuing problem. I filed a case with Hyundai Motor America (case# [XXX]). So far, the executive case manager assigned to me has not been helpful. I request an NHTSA Office of Defects Investigation to ascertain whether it is advisable and safe for Hyundai to do nothing about this critical problem for consumers. Further, two more questions should be explored: 1) should 2025 Ioniq 5 vehicles be recalled because of the ICCU; and 2) should the ICCU itself be improved or modified, given that it has been the cause of recall in the previous three model years? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

While charging the vehicle, I heard a loud pop and the charging session stopped and could not be restarted. An error warning icon appeared on the dash with a battery icon. Also a car with an! Icon and a large circle stating check the electrical system. I was able to drive a few miles before the car completely died.

Driving under normal conditions, heard a “pop” near the rear of the car and within seconds had an immediate loss of power. The dashboard had lit up with “Check electric vehicle system” and was limited to 20 MPH on a 45 MPH road with no safe place to stop. Was able to limp car home, dealer confirmed ICCU was faulty and had to be replaced. My family was very very lucky to not be on a highway when this occurred. Hyundai has continuously failed to not only fix the ICCU issues with this vehicle, but also hasn’t extended the warranty on the faulty component here in the US like they’ve done in Asian markets. As a consumer, I’m begging the NHTSA to hold Hyundai accountable for these ongoing EV issues.

ICCU FAILURE. Confirmed by dealer. Warning lights to check battery. Almost total loss of power. 4000 miles on the car. Service center has no estimate on when parts are available.

My new 2025 Ioniq 5 that has 8,700 miles on it suddenly popped up the message "check electric vehicle system" warning as we were driving in our neighborhood. My husband then realized that he could not drive over 30 mph just as he was merging onto our local Highway in a 65 mph zone. We limped along until the next turnoff and turned around. We decided to take the chance to get back onto the highway for a the short distance back to our house at 30 mph and returned the car to the garage. It was towed this morning to the dealership and declared to have a failed ICCU unit. All parts are back ordered indefinitely.

What failed: On February, 6, 2026, I experienced a complete failure of my Ioniq 5's electrical system due to the ICCU failing. Heard a loud "pop" and eight seconds later it reported a warning to check the vehicle's electrical system and 24 seconds after the pop it then chimed repeatedly saying to pull over immediately and come to a complete stop. The vehicle is currently at a nearby My safety: Once I was able to hobble the car off the side of the road, it left me in a dangerous situation. The vehicle was such in a state that the hazard lights were not operational and I had no way of getting any heat. (It was 20F with a wind chill down to 14F.) It also happened in a bad part of town, meaning that I did not want to leave the vehicle unattended for a tow truck. This also occurred 60mi from home. Reproduced: The dealership it was towed to is not open until Monday, February 9, 2026 but the tow's rescue battery made the system run enough to report the Diagnostic Trouble Code of "P1A9096". Doing a quick search online for that shows a number of cases with the same problem. While waiting for the tow, I tried to start the car a number of times to no avail. Inspected: Not yet, see "Reproduced" section above. Any other signs/symptoms? Nothing until the "pop" itself. Once that happened, basically every warning icon showed up on the instrument cluster/screen.

2:27 pm on 02/06/2026. Pop heard from the trunk area, then displayed "Stop vehicle and check power supply," the car lost power and then became completely immobile. The car has 3500 miles on it. Bluelink app showed "Everything looks good."