Hyundai Ioniq 5 Complaints

1,350 consumer complaints on file.

#11717910February 13, 2026
ELECTRICAL SYSTEM
The vehicle is dead. It won't start, it won't open unlock its doors, it won't do anything. This is consistent with the ICCU failure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717905February 13, 2026
POWER TRAIN, ELECTRICAL SYSTEM
ICCU needs to be replaced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717782February 13, 2026
ELECTRICAL SYSTEM
ICCU Failure . Car stopped in the middle of the highway. I was able to move over thankfully to the side of the rode. Went into turtle mode and then it had to be Towed to my local Hyundai Dealership
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717617February 12, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
Vehicle stopped charging and will not charge using a level 1 or level 2 charger. It will charge at a level 3 charger only. Took it to a Hyundai dealership and they did a software update and said it was fixed. Took it home and still would not charge. Took it to another Hyundai dealership and they said it was an ICCU issue they had been seeing and it would need to be replaced. I have read from many other Hyundai Ioniq 5 owners about the ICCU being a weak point in the car and having to have it replaced, some multiple times. When I tried to charge with my level 1 charger at home, it tripped the breaker, which is concerning. The message on the dash was simply, "check battery system".
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717590February 12, 2026
ELECTRICAL SYSTEM
The ICCU (Integrated Charging Control Unit) failed with DTC P1A9096 and I was driving at approximately 25-30 MPH on 01/17/2026 at approximately 5:40 pm in approximately 32 degree temperature. The car had just been disconnected from a hardwired Chargepoint Home Flex 11.5 kw 48A Level 2 home charger with a NACS connecter (so no adapters used), though the charging had mainly ended at approximately 5:24 am that same morning (after reaching the preset charging limit of 80% of battery capacity, I believe). That charging session provided 45.572 kWh of energy over approximately 4.5 hours and then the vehicle sat, still plugged in, for approximately 12 more hours until disconnected to drive it. After driving approximately 1-2 minutes on residential streets, I heard a muffled 'pop' sound behind the front seats, and the vehicle dashboard suddenly showed 'check electrical vehicle system' and 'stop vehicle and check power supply'. The vehicle suddenly had limited capabilities, including speed, and at that point gave a limited, unspecified, amount of time to get off of the road to safety. The vehicle is currently with a Hyundai dealer (Hyundai of 110 in Farmingdale, NY) who has since confirmed it was an ICCU failure. They are waiting on a new ICCU, which is on back order. The vehicle had been leased, new, in June of 2025 and after that, was driven approximately 9,506, miles (mostly highway) and never exhibited any sounds, warning lights, control issues, or any other indications that there was any problem or that there would be any sudden problem with the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717548February 12, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
At approximately 10pm on Saturday night with temps in the single digits and a large snowstorm (that would cripple much of the US for several days) just about to hit, the 1.5 year old vehicle failed completely. Propulsion battery 81% charged, started normally, then gave "check electrical system" warning which upon search can be due to a low 12v battery; call AAA and spouse (live 2hrs away). Began to drive towards a station two blocks away, thinking plugging in may help system warm and/or recharge 12v battery. Car goes into limp mode on road, then dies in four-lane road. Use portable battery jumper, draining it into the 12v battery and able to limp-mode out of traffic and into Walmart parking lot entrance where dies again. With bystander help, push the vehicle across parking lot to chargers; vehicle in total electrical failure w/random lights flashing (tail, dash, etc.) and no command-functions (couldn't shift into park, open charging port). Charged 12v battery from an ICE car 30 minutes w/restoration of command function, but nothing more than limp mode. AAA still hours ETA. Personally swap 12v battery purchased from Walmart w/restoration of power, but abnormal function (lane assist forcing wheel, menus malfunctioning) & warnings remaining. Drive vehicle to -thankfully- nearby dealership before another failure. Abandon vehicle & wait for pickup by spouse, drive last hour in a snowstorm. Very lucky I wasn't stranded on the highway, hit and killed in a snowstorm. Very lucky I wasn't hit and killed in the road where it died. Very lucky I called for help early, wasn't stranded more than 20 minutes in dangerous-cold, didn't wreck in snowstorm getting home. Very lucky the malfunctioning systems did not steer/force me into another vehicle or pedestrian, causing injury or death. Dealership confirmed (longstanding and very well-known) failure of ICCU module that Hyundai refuses to properly address. These are unsafe vehicles, hand-grenades on a timer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717518February 12, 2026
ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: WARNINGS
In-Cabin Camera Unit Replacement - The in- cabin camera unit needs replacement due to a communication failure with the ICC module. Technicians confirmed proper power, ground, and CAN system continuity to the module but encountered a persistent 'ROM ID check failed' error. Replacing the unit can restore proper communication and functionality of the camera system.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717514February 12, 2026
POWER TRAIN
P1A9096 ICCU failure ICCU Failed while travelling on interstate. Limp mode limited vehicle to 40MPH top speed. 12V battery was not able to recharge. Became a slow-moving hazard while driving back home a few miles limited to 40MPH during winter conditions. Problem was confirmed by dealership service center No other warnings prior to sudden "pop" and dashboard warning to check EV electrical system.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717502February 12, 2026
ELECTRICAL SYSTEM
All of a sudden after starting the car I got a “Check Electric Vehicle” warning sign and when I called the dealership the told me do NOT drive it and tow it. The basically told me it will die on me.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717485February 12, 2026
ELECTRICAL SYSTEM, ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717409February 11, 2026
FUEL/PROPULSION SYSTEM, ELECTRICAL SYSTEM, EXTERIOR LIGHTING
As we drove toward the highway to begin our journey home in our 2024 RWD Ioniq 5 with our entire family and luggage in the vehicle, we received a "Check Electric Vehicle System" warning and immediately pulled over and called Hyundai Roadside Assistance. They initially were going to send someone to jump the car, assuming it was an ICE, but once we said it was an EV, they said they didn't have the equipment to jump an EV. We then spoke to Hyundai Customer Care, and we reported that we received the "Check Electric Vehicle System" warning. The HCC rep said that she did not see any issues with the vehicle on her end, so we would be OK to drive it. We specified that we had a 1.5 hour drive home and asked her explicitly if we would be OK to drive this length of time with this warning and make it home? She again said that we would be OK to drive it. After getting off the phone with her, we proceeded onto the highway and within about 2 minutes, received the "Stop Vehicle and Check Power Supply" warning and then, within a few seconds, began to lose power. This was extremely dangerous, as we were going down a hill on a highway frequented by semi trucks in the rain. Fortunately, we were still able to turn on the hazard lights and coast into a nearby hotel parking lot. As we were losing power, we were afraid we would not be able to get out of the car because all the doors were locked and the windows were up due to the rain, so we quickly unlocked two of the doors as soon as we pulled into the parking lot. One of us then had to stay with the car at all times because we couldn't lock or unlock the car. We eventually had the car towed to the Hyundai dealer closest to us who determined that the ICCU and fuse had failed and needed to be replaced, but they could only replace them with new parts of the same design that could potentially fail again; Hyundai does not yet have a fix for the ICCU failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717256February 11, 2026
ELECTRICAL SYSTEM
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717247February 11, 2026
ELECTRICAL SYSTEM
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717114February 10, 2026
ELECTRICAL SYSTEM
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)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717102February 10, 2026
ELECTRICAL SYSTEM
My vehicle is 1 year old and has 7800 miles on it. I was driving on Friday evening (it was dark) and the vehicle acceleration was greatly reduced. I was about to get onto the highway but the warning light came on that said to have the electrical system checked. I pulled over and got a power limited warning and the vehicle would not drive after that and had to be towed. My toddler was in the car and if this had happened while we were on the highway in the dark I would have had trouble getting off the highway safely. The dealership inspected the car and said the Integrated Charging Control Unit (ICCU) had failed. They stated that there were 16 other cars were on the lot that had to be towed in with the same problem and that the part has been backordered since the beginning of January. I feel Hyundai is underreporting this issue and a recall investigation should be opened. There was no warning of this issue, I had been charging the vehicle and using it normally.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717078February 10, 2026
ELECTRICAL SYSTEM
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717064February 10, 2026
ELECTRICAL SYSTEM
The vehicle began giving me electrical error warning messages at startup. I tried to drive it but further warning messages advised to stop driving. I ended up having Hyundai roadside assistance come and tow it to a dealer. The dealer reported the ICCU unit failed. The only remedy was replacing the whole unit which they could only get from Korea. It's been a month and there's still no ETA for the part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717054February 10, 2026
ELECTRICAL SYSTEM
The ICCU (Integrated Charging Control Unit) failed. I could not charge with my level 2 charger and dealer confirmed that the ICCU unit was bad and needed to be replaced. I have been waiting over a month for the part and repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716969February 10, 2026
ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: WARNINGS, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
ICCU FAILED and Hyundai service states that part is back ordered indefinitely. Has been 2 weeks with no further updates Additionally service department is unable to repair forward monitoring sensors that quit working with the smallest amount of precipitation, sometimes just from road condensation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716925February 10, 2026
ENGINE, ELECTRICAL SYSTEM
The contact owns a 2024 Hyundai Ioniq 5. The contact stated that while driving approximately 60 MPH, the vehicle lost automotive power, with a burning odor entering the cabin of the vehicle. The message "Check Electric Vehicle System" was temporarily displayed on the digital display screen. The vehicle was towed to a local dealer and remained with the dealer. An appointment was scheduled to inspect the vehicle. The vehicle was not yet repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 17,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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