Hyundai Ioniq 5 Complaints

1,350 consumer complaints on file.

#11721040February 27, 2026
ELECTRICAL SYSTEM, POWER TRAIN
The ICCU failed under normal utilization The vehicle went into limp mode which changes expected driving dynamics The dealer confirmed ICCU failure and the manufacturer has confirmed the vehicle is a lemon as per MA state law No warnings prior to the failure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721036February 27, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
ICCU Failure causes the car to not work.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721033February 27, 2026
ELECTRICAL SYSTEM
Car suddenly out of the blue reported electrical system problem and battery problem. It also entered turtle mode where it would not go more than 10 MPH. If accelerating across an intersection this would have been extremely problematic if expecting to be able to travel faster than that. Towed to dealer that said it is a failed ICCU. This is a common failure mode and there needs to be a fix and safety recall for this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721005February 27, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
On January 31st, 2026, not long after starting a journey in my car, I got a “check electrical systems” warning. I was close to home so was able to turn around and drive home. Just before pulling into the driveway, the warning changed to a “power limited” warning. On Monday Feb 2nd, I had the car towed to my local dealership, where it has been since. The dealer confirmed that it was an issue with the ICCU component which is on back order to this day.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720966February 27, 2026
ELECTRICAL SYSTEM
The ICCU failed. The car is at the dealership, availability of the failed part is unknown. The vehicle was no longer able to charge the battery. This could have happened while driving. The dealership has confirmed failure and will replace when a new part is available. Unknown if part has been inspected by others. Hyundai case has been opened. There was no warning. Indication of problem was breaker tripping at charging.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720932February 27, 2026
ELECTRICAL SYSTEM
Turned on my car one day after charging and heard a 'pop' from the rear of the car, followed by warning lights activating on the dash and an electrical system error message. I had the car towed to the dealership (Santa Monica Hyundai) and they confirmed the issue was an ICCU component failure. There were no warning signs or issues before the failure. The dealership currently has no ETA for a fix.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720929February 27, 2026
SEAT BELTS, STRUCTURE:BODY
My Ioniq5 has experienced a recurring water leak that has repeatedly exposed the left rear seat belt and seat belt retractor to large amounts of water. I noticed recently that after it had rained the left back seat belt was soaked and dripping water when pulled out. After fully pulling out the belt as far as it would go it was clear that the water had fully soaked the belt and retractor. It is unclear when this started or how long this has been occurring, as there was no warning or other indication that there was a leak until the belt happened to be put on soon after it had rained. I am uncertain if this poses an actual risk to the function of the seat belt or seat belt retractor. However, even though it is unknown if the water intrusion limits the seat belt's function, there is a perceived risk that this could corrode or degrade the function of the internal components due to the repeated water exposure. The car was taken to the dealership twice. The first time they claimed they were unable to repeat the issue. However, days later it rained again and the belt and retractor were again soaked. After the second return to the dealership they were able to confirm a leak in the glass roof of the vehicle that was allowing the intrusion to the seat belt and retractor. The car is still currently at the dealer awaiting repair for the water leak with an unknown timeline
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720921February 27, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
My Ioniq5 experienced a failure of the Integrated Charging Control Unit (ICCU) while driving. There was a loud "pop" noise from the back seat that occurred while driving, and afterwards the car experienced an unexpected braking/deceleration and was unable to maintain a speed over ~30MPH. After the "pop" noise -- a "Check electric vehicle system" alert appeared on the dash, and an alert that the car had entered a limited power state also appeared a few minutes later. My safety was put at risk due to the car unexpectedly decelerating and then losing the ability to maintain speed while driving on a busy highway. Other's safety was put at risk due to my limited ability to maintain speed and not impede traffic. There was no warning's prior to the sudden failure to indicate there was anything wrong with the vehicle. The car needed to be towed to the dealer due to the limited state the car was put in. It was confirmed at the dealership that the ICCU had failed and needed to be replaced. It was also confirmed at the dealership that the replacement part was the same as what had failed, which is concerning for mine and other safety that this is at risk of occurring again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720902February 27, 2026
ELECTRICAL SYSTEM
The car gave a Check Electrical System warning when I tried to start it, which disappeared after a moment. When I put it in gear it said limited power, then after sitting on for a few minutes to see what would happen a warning to stop vehicle and check power supply. After towing to dealer it was verified to be a failure of the ICCU. This is the second ICCU failure I have experienced in this car. The replacement part is on back order with no eta.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720895February 27, 2026
ELECTRICAL SYSTEM
While driving, loud pop sound came from rear of car. No prior warning or lights before this. Car immediately displayed a check electrical vehicle system warning light. Luckily we were somewhere were we could pull over immediately. Towed to dealer and they determined it was the ICCU that popped. Due to the ICCU failure, we could have completely lost car power if we didn't have somewhere to stop. Currently car is sitting at dealer with no ETA for getting fixed. Part is not available .
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720826February 26, 2026
ELECTRICAL SYSTEM
Received “check electrical system” warning when turning on vehicle. Car towed to service department. Diagnostic said it was an ICCU failure with a back ordered part and no clear timeframe on when it would be in stock and fixed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720748February 26, 2026
ELECTRICAL SYSTEM
The Integrated Charging Control Unit (ICCU) failed on [XXX]. An electrical system warning light appeared on the dashboard as soon as I turned on the vehicle; a review of the diagnostic code via the Hyundai Bluelink app indicated that the vehicle was unsafe to drive. It was towed to Napleton's Hyundai service center in Urbana, Illinois. I was informed that the replacement parts were on a nationwide backorder. The repairs were finally completed on February 25, 2026. The repairs were covered under warranty; however, it was a disappointment and inconvenience for a practically new car to suffer a critical part failure and then to be out of commission for 50 days. 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
#11720679February 26, 2026
UNKNOWN OR OTHER
Missing a spot weld point on liftgate frame panel and rood panel. Also, the panel gaps are open widely compare to left and right side. No accident happen, I am from a collision center, I found these factory defects.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720580February 25, 2026
FORWARD COLLISION AVOIDANCE: WARNINGS
When a car is in the process of passing me on the left during a left hand curve on the highway at highway speeds, the rear left radar sensor seems to have set off a forward collision warning. This caused the ioniq5 to do an emergency collision brake. I had to press on the accelerator to cancel the emergency brake while the other car passed me on the left. There were no cars in front of me that would have triggered a frontal collision emergency brake.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720569February 25, 2026
ELECTRICAL SYSTEM
The ICCU failed at approximately 14,000 miles. I was driving on a residential street and was able to park on the side of the road, so there was no danger, but the car became undriveable
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720515February 25, 2026
ELECTRICAL SYSTEM
ICCU failure after ~16k miles of ownership. Car cannot charge via AC charging and cannot charge the 12V battery.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720506February 25, 2026
POWER TRAIN, ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
ICCU failure at 5308 miles. heard a loud pop while driving and 12v warning system errors
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720487February 25, 2026
ELECTRICAL SYSTEM
ICCU failure. Put vehicle in gear and heard a pop from the back. Dash said something about check vehicle soon. approximately 5 minutes later chimes went off and dash said another electrical warning that sounded more serious. Towed to dealership. Said ICCU was bad
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720479February 25, 2026
ELECTRICAL SYSTEM
ICCU failure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720475February 25, 2026
ELECTRICAL SYSTEM
The ICCU and fuse failed, rendering the vehicle unusable and stranding my wife and child. The problem has been confirmed by the dealer. The component was inspected and confirmed to have failed. There were no warnings or indications of any kind prior to failure. My wife heard a pop from the back of the vehicle, then all sorts of warning lights lit up and the vehicle stopped.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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