Hyundai Ioniq 5 Complaints (2025)

290 consumer complaints on file.

#11720145February 24, 2026
ELECTRICAL SYSTEM
While driving, heard a POP sound, followed but multiple warnings to stop vehicle and check the electrical system. The car went into turtle mode. luckily I was close to home, but any other situation could have been dangerous. This is a commonly known issue with these Ioniq 5 vehicles. The ICCU fails and can no longer charge the 12v battery, causing loss of electrical systems and possibly even the ability to have hazards on if you are stuck in traffic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720128February 24, 2026
ELECTRICAL SYSTEM
The vehicle was in the middle of a u-turn when the ICCU fuse suddenly and without warning blew. Display warning messages came on to "check electrical system". Car was able to drive in "limp mode" at about 40 mph on level roads, but not more than 25 mph on any uphill. This is a well known problem with Hyundai EVs. It will be towed to a dealer to confirm. It felt extremely unsafe to be in the middle of a turn on a public street and have the car power system fail. Luckily there was minimal traffic at the moment. A few minutes earlier or later would have been on a heavily trafficked road
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720013February 23, 2026
ELECTRICAL SYSTEM
ICCU failure. Vehicle has 5200 miles on it. A loud "pop" was heard then the vehicle went into "limp mode" and restricted speed to 30 mph. After about 10 miles the car totally lost power and wouldn't start. Warning l messages said to get it serviced which is what I was attempting to do.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720002February 23, 2026
ELECTRICAL SYSTEM, POWER TRAIN
ICCU confirm dead by the dealer. IONIQ 5 2025 AWD. only had this car for 5 month, 4900 miles. vehicle stopped at the middle on the highway. luckey, no accident occur. no part avilable, no ETA for fix, no loaner from dealer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719914February 23, 2026
POWER TRAIN, ELECTRICAL SYSTEM
ICCU failure causing the vehicle to be inoperable
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719890February 23, 2026
FUEL/PROPULSION SYSTEM
ICCU failed less than 5k miles into my lease. I am now no longer able to drive the vehicle and there is no eta on getting a replacement since it’s on back order
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719870February 23, 2026
VEHICLE SPEED CONTROL, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
When in cruise control, the driver attention warning message appears regardless of where my eyes might be, whether I am wearing glasses or sunglasses or not, with nothing obstucting the sensor, with the steering wheel adjusted higher or lower. I have since May of 2025 tried to figure out how to get it to work properly to no avail. The warning continues to appear with an alarm ubntil it turns the motor off completely, even at highway speed causing an extremely dangerous situation. Additionally, I depend on the cruise control to help me maintain a safe, legal speed. This malfunction, rather than being a safety feature, is a distraction to safe driving. It CAUSES distraction, rather than provide safety. Hyundai is fully aware of this deficiency, yet has not addressed it I know that Many have experienced this smae problem. It is time for a recall to remedy this problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719702February 22, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
The ICCU (integrated charging control unit) failed on the vehicle, which resulted in the vehicle not being able to charge the 12v battery. The vehicle was no longer able to be driven after the ICCU failed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719627February 21, 2026
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
The ICCU component failed on me at 4,356 miles. Heard a pop with the car and then the dash started displaying electrical errors. To stop the vehicle and turn it off. The vehicle would not accelerate and would only go up to 25 miles per hour. Had to tow it to the dealership. Given a time frame of 30-60 days to receive the ICCU part for repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719145February 19, 2026
ELECTRICAL SYSTEM
The contact owns a 2025 Hyundai Ioniq 5. The contact stated that after starting the vehicle, the battery warning light remained illuminated, and the vehicle failed to exceed 45 MPH while driving. The messages "Onboard Charger - Stop Vehicle" and "Power Supply" were displayed. The vehicle was later towed to the local dealer who diagnosed that the ICCU Module had failed and needed to be replaced. The vehicle was not yet repaired. The contact stated that during the failure, the electric battery had failed to recharge the 12-Volt battery as intended, which caused the failure. The manufacturer was notified of the failure and informed the contact that the vehicle was not included in NHTSA Campaign Number: 24V868000 (ELECTRICAL SYSTEM). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 8,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719025February 19, 2026
ELECTRICAL SYSTEM
''Stop vehicle and check power supply'' At this point I heard a pop sound and the car died. The dealer said this is a ICCU problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718943February 18, 2026
ELECTRICAL SYSTEM
At a routine service visit to AutoNation Hyundai/Carlsbad, I received a good report on the 2025 Ioniq 5 condition. Starting the car to drive home I heard a pop sound and noted a diagnostic code that confirmed the ICCU and associated fuse had blown. Since then, Hyundai has been unable to clarify the ETA of the back ordered parts. They provided a loaner but it’s not an EV.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718813February 18, 2026
ELECTRICAL SYSTEM
On Sunday, 2/15/26 while backing out of my garage into the driveway, I heard a "pop" sound from the rear and the vehicle stopped and shut down with multiple warning/alerts on the dash. The error code reported was DTC P1A9096 which is indicative of an ICCU (Integrated Charging and Control Unit) failure as widely reported here and online by other owners. Vehicle was towed to the dealer and is currently awaiting diagnosis.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718681February 18, 2026
ELECTRICAL SYSTEM
ICCU failed. Car has been sitting at service center for ~4 weeks. Luckily the incident took place at home but could have been anywhere. No warning prior to failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718580February 17, 2026
POWER TRAIN, ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
The 12V system battery failed to keep a charge and the vehicle slowly reduced maximum speed until it fully died causing the car to coast to a stop on a 55MPH highway. At 9,500 miles on the odometer the ICCU has failed. The part is on backorder and my car has been in the shop for three weeks with no estimated completion date. A LOT of IONIQ 5 owners are encountering the ICCU failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718509February 17, 2026
POWER TRAIN, ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
Main battery failure, can not charge, can not drive car. Warning light(s) on dashboard. High voltage battery needs to be replaced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718412February 17, 2026
ELECTRICAL SYSTEM
The vehicle experienced a sudden failure of the Integrated Charging Control Unit (ICCU). While driving, a loud "pop" was heard, followed immediately by a "Check Electric Vehicle System" warning on the dashboard. The vehicle then entered "Limp Mode" with significantly reduced propulsion. The 12V battery became depleted, leading to a complete loss of motive power and loss of electronic safety systems, creating a hazardous situation in traffic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718331February 16, 2026
ELECTRICAL SYSTEM
When putting my car into gear a loud pop noise was heard. The car could not be driven at the point and the instrument cluster mentioned an electrical system failure. The car was towed to the dealer where they confirmed the ICCU unit needed to be replaced. It has been at the dealership since January 8th with little to no communication.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718283February 16, 2026
STEERING, ELECTRICAL SYSTEM
Car battery completely failed on a busy road.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718239February 16, 2026
ELECTRICAL SYSTEM
I heard a pop followed by an alarm notification stating the electrical system had an error. I had started the climate system but the car was parked.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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