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.
2025 Hyundai Ioniq 5 electrical complaints
Page 6 of 9: complaints 131 to 160 of 229, newest first, as owners wrote them.
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 the federal safety agency 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.
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."
- the iccu failed and was towed to the dealership and inspected by the service team. - the car needed to be pulled over to safety because of the failure, i had my daughter with me. - yes, the problem has been confirmed by a hyundai technician. - yes, a hyundai technician - i had 2 prior brief errors show on the dashboard that disappeared too quickly to read, not sure if they were related. about a month or two before the failure.
I heard a pop sound in the back seat while pulling into a parking spot and got a "stop Vehicle and Check Power Supply" and it going into limp mode. I was able to get it home and then towed to the local dealership. I was told it was a issue with the ICCU and that it, along with my 12V battery and ICCU fuse, needed to be replaced. They could not tell me why the ICCU failed. This was on 1/3/26 and as of today 2/06/26 the dealership is still waiting for a replacement ICCU.
ICCU failure
I heard a loud pop and then the dashboard was flashing with a lot of warnings. The car slowed down to about 5 MPH and then eventually died and wouldn't turn back on
12v Battery has died multiple times. Dealership says the battery is fine. 2025 with 16k miles.
The ICCU failed after 5,500 miles and the car lost all power. Fortunately it happened in the driveway and otherwise could have been a life-threatening situation. This is a 2025 model that wasn't covered by the recall so it's obvious Hyundai has not solved the problem.
The ICCU system's fuse failed.The car is currently with the dealership for repairs and could be available for inspection there if needed. The car was rendered inoperable and shut down while operating the vehicle. The abrupt breakdown could have been a hazard to the driver, passengers of the vehicle, and other drivers on the road. The issue was confirmed by the dealership's service technician. The vehicle has only been inspected by the dealership's service department at the time of writing. There was a warning just before the system/car shut down while driving. The warning sounded and said to "Stop vehicle and check power supply." This was the only time the warning appeared.
On [XXX], the vehicle was unable to be started - no lights, no power, unable to open the doors. I called Hyundai Roadside Assist and they sent someone from AAA a few hours later who was able to "jump start" the vehicle. I took it to the dealer, Manly Hyundai, on December 17th, 2025 and they determined nothing to be wrong with either the battery or the electrical system. On [XXX], while driving from home to the local grocery store, the car presented a warning light on the dash and the “gas pedal” stopped working. I was able to coast into a parking lot at which point an even larger warning light appeared and the vehicle then lost all electricity completely. I again called Hyundai Roadside Assist and they sent someone from AAA a few hours later who determined that the car was unable to be “jump started” and would have to be towed to the local dealer, Manly Hyundai. The dealer reported back to me that the component that failed is called an “ICCU” and is some kind of controller related to the charging and motors of the electric drivetrain. It is available to be inspected at the dealer currently, Manly Hyundai. My safety was put as risk because the car became essentially inoperable while driving downhill and gave no warning signs ahead of time before the lights lit up on the dash and I lost control. The dealer has confirmed that it is an issue with the “ICCU”. The dealer has inspected the component at their service department. The first warning light that appeared came at the same instant that the vehicle lost drive power. The second warning light that appeared came at the same time that the vehicle lost all electricity entirely. There were no indications that something might be wrong with the vehicle prior to the vehicle actually producing symptoms of being undriveable. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2025 Hyundai Ionic 5. The contact stated that shortly after purchasing the electric vehicle, while charging the battery there was a loud banging and the battery failed to charge. The vehicle was driven to the dealer, who diagnosed that the Integrated Charging Control Unit (ICCU) had failed and needed to be replaced. The ICCU was replaced, but the failure reoccurred. The vehicle was returned to the dealer under the State Lemon Law Act. The manufacturer was notified of the failure. The failure mileage was 200. The VIN was not available.
The car is a brand-new 2025 Ioniq 5 with only 2,949 miles. All of a sudden and without warning, it entered "limp mode" while driving and did not go past 25 miles per hour. I was close to home so luckily I was able to street park it safely. Called roadside assistance and the car completely powered off (died) in front of the tow truck. The dealership says it is an ICCU failure and need to be entirely replaced. The part is backordered with no ETA for replacement.
The Integrated Charging Control Unit (ICCU) failed. While driving, we heard a 'pop' noise from the rear, which was a blown fuse. Immediately after, alarms were sounding, display showed electrical system failure, and car would only drive in turtle mode (extremely limited speed). Car was drivable for approximately 100 feet and then totally died. Car needed to be towed to dealer for repair.
ICCU failure. Car totally inoperable within 5 minutes of warning message. Towed to the dealership with no ETA on a fix. It has already been over two weeks.
My electrical warning light came on for the second time in under a year. The first time I was pulling out of my driveway, so I was able to stop safely. This time I was a block from my house, so I was able to safely pull to the side of the road. In both cases the car was towed to the dealership and both were confirmed to be a bad ICCU. The first time I was able to get it fixed within the week. This time the dealership has said the part is on back order and there is no ETA.
On 1/15/2026, my 2025 Ionic 5 Limited AWD car with 11K miles on it suddenly lost power about 1/2 mile from my home. I pulled over to the side of the road and within seconds the car was totally dead (nothing worked). After waiting 1 1/2 hours (in an unheated car with outside temperatures in the 30's (F)) the car was towed to the dealership, where the ICCU was determined to be the problem. The dealership apparently has 3 other Ionic's waiting for new ICCU's. My car has been in the shop ever since, waiting for the replacement ICCU to be delivered to the dealership (delivery is apparently expected sometime in the next couple of weeks).
Battery warning light went on as I left my house. Since this is an EV, naturally became concerned. Car was towed to Heritage Hyundai, Towson Md and I was later informed by the technician the ICCU went bad and this was a common problem for the Hyundai/Kia EVs which Hyundai/Kia have not fixed. The car is currently at the dealer's service department.
Diagnosis: ICCU and fuse failure. Situation: 1/17/26 No issues starting when starting/driving car to first store. Car started without issue and I drove to next store a few minutes away. Came out of store to start car and got a notification on dash to check electric vehicle system. Checked app and had error P1A9096 Air Flap Turned car off for a minute, turned car back on and still received the same error. Tried to drive back to house (only about 6 miles away) and realized the car was limited to 25 mph although no indication/notification of limit. Notification continued and I ended up getting a stop vehicle and check electrical system with flashing lights. Stopped and cycled off and on the vehicle a few times. Started vehicle and only check electrical system notification was on (no indication not to drive vehicle so I continued driving). Continued driving and heard what I believe was a pop noise and also got the notification to stop vehicle and check system. Pulled over turned vehicle completely off and checked app again. and Still only PA9096 error. Contacted Hyundai roadside. Truck driver contacted me shortly after letting me know they were on the way. Tried to turn vehicle around in parking lot so easier to tow. Vehicle limited to 1 mph. Vehicle died when I got in spot and wouldn't turn back on. Vehicle towed to dealer. 1/28/26 Over a week after issue, dealer diagnosed as ICCU and fuse failure.
ICCU failure, car had to be towed to dealer. No loaner available, no eta on repair.
The ICCU (integrated charging control unit) failed July 6, 2025 when the car had 6,800 miles on it. I was driving it on the road at the time and it suddenly would not go faster than 20 miles per hour. It was in the shop for weeks to repair. The replacement ICCU just failed again on January 31, 2026 at a mileage of 15,380. The car is inoperable and cannot be driven.
ICCU failed with around 11k miles on 2025 Ioniq 5, around a mile from home Was able to drive back to home with reduced power Currently at dealership for weeks awaiting warranty service, no ETA on replacement part
The Integrated Charging Control Unit in our 2025 Ioniq 5 failed on vehicle startup. Fortunately the vehicle was parked when the part failed. There were no issues or symptoms prior to the failure and subsequent fault message. Failure of the ICCU has been confirmed by our local Hyundai dealer which is now in possession of the vehicle awaiting repair.
ICCU failure. Towed to Vacaville Hyundai. Dealer diagnosed and confirmed ICCU failure. Barely got to parking lot - limp mode. Warning lamps: Check Electrical System. Also check 12v battery After parking: Stop vehicle and check power supply. message
Electrical system warning light came on and said to shut the car off immediately. The car was parked at the time and I was trying to start it. The 12V battery would not hold a charge after multiple items and the car was inoperable. The dealer has yet to provide any information but hinted at a likely ICCU issue.
The Integrated Charging Control Unit (ICCU) component of the 2025 Hyundai Ionic 5 with less than 6 months and 5,081 miles of driving failed. This failure was noted by the warning systems in the car indicating car needed to be stopped and not driven. (Photo attached in later section) Further information indicated a very limited distance to drive before complete car shutdown late at night. The ICCU component failure has been confirmed by the dealership service department where the car was purchased. No warnings were noted before the ICCU failure. This ICCU component failure seems to be common enough to be a known failure, but the frequency has not been made public.
VIN decoder
See the problems and recalls for an exact car
Buying a used 2025 Hyundai Ioniq 5?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history