Hyundai Ioniq 5 Complaints (2024)

222 consumer complaints on file.

#11715709February 4, 2026
ELECTRICAL SYSTEM
Battery light came on and car stopped after about 1 miles in the middle of the road. ICCU failure was the cause as determined at the dealer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715701February 4, 2026
ELECTRICAL SYSTEM
Had ICCU replaced twice last year, then today my electrical system shut off and warning lights came on that I can’t go over 10mph then after that the car shut off completely.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715652February 4, 2026
POWER TRAIN, EXTERIOR LIGHTING, ELECTRICAL SYSTEM
On the morning of [XXX] I received an error message on my dashboard (attached) "Stop Vehicle and Check Power Supply". The car had started to lose acceleration power to no more than 30MPH. I contact the service department at my local dealer. They instructed me to bring it in or have it towed. I was about 2 miles from home so I headed back. While in transit the car lost all power in the middle of traffic. It stopped completely ! No emergency flashers, lights, power for the doors, windows, etc. I could not even put into Park. If I lifted my foot off of brake, it started to roll backwards. Luckily I was not on the expressway or at a railroad crossing. Fortunately a local police officer saw my dilemma and directed traffic and pushed my car to the side of the road ([XXX]) After doing research online I found this to be a common issue with Hyundai/Kia EV vehicles. The ICCU fails with no warning leaving drivers stranded.. The unit is on backorder because of so many failures and there is no ETA 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
#11715632February 4, 2026
ELECTRICAL SYSTEM
ICCU failure (as determined by the dealership), car lost power rapidly while driving (there was a 'check electrical system' error on the dash) and I had to push the vehicle to clear it from the road (there was no shoulder where it failed).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715282February 3, 2026
ELECTRICAL SYSTEM
The 12v battery system failed in November 2025. Battery was replaced by dealer. Then on February 2, 2026 the ICCU failed while driving. Complete and unsafe loss of power while driving.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715144February 2, 2026
ELECTRICAL SYSTEM
ICCU needs to be replaced and is faulty.I had a warning on Friday and was able to jump my car, then a complete engine failure Sunday 2.1. The part is on back order, replacedment estimate not given (internet research says 1 week to 3 months) and I am in line for a loaner car even thought all parts are under warranty. The car is less than 2 years old and has less than 24k miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714937February 2, 2026
ELECTRICAL SYSTEM
ICCU Failure Car was in limp mode and unable to drive during -5 degree temperatures. ICCU Failure Confirmed by Hyundai dealership. Hasnt been inspected by others No prior warnings before the issue happened
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714746February 1, 2026
ELECTRICAL SYSTEM
The ICCU failed as confirmed by local Hyundai dealership. That was on Jan 4. Car taken to dealership on Jan 5th 4 weeks later on Feb 1 still awaiting part (ICCU) which is on national back order as per the dealer and Hyundai customer support.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714665January 31, 2026
ELECTRICAL SYSTEM
While the car was being driven, total failure. Towed to dealership. Diagnosed as ICCU failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714616January 30, 2026
ELECTRICAL SYSTEM
I charged my car overnight and in the morning the ICCU failed, confirmed by Hyundai dealer. No prior warning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714455January 30, 2026
ELECTRICAL SYSTEM, ENGINE
Integrated Charging Control Unit (ICCU) failure at 16,000 miles in 2024 Hyundai Ioniq 5. Car was turned on and started to drive and sign said Power System Failure. Then it said Stop Vehicle Immediately. Car would not accelerate but I was close to home. I had it towed to Hyundai and they said it is an ICCU failure and they have no ETA when the part will come in.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714434January 30, 2026
ELECTRICAL SYSTEM
The ICCU failed while I was merging onto the highway to take my 15 month old daughter to daycare. I received a warning message “Stop vehicle and check power supply” and the car entered “limp mode” slowing down considerably in the middle of traffic. A turtle icon also appeared on the screen to tell me the vehicle could only move slowly. I was able to pull off into a parking lot. The car battery died. It was 10 degrees F outside. Hyundai towed it to the dealer where they confirmed ICCU failure. The recall software update took place in December 2025. The dealer doesn’t expect to have ICCU replacement parts in stock for 1-2 months due to back order and 10 other ioniq5s are there waiting for the same fix. The vehicle is likely available for inspection by NHTSA if the dealer service center allows access.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714317January 29, 2026
ELECTRICAL SYSTEM, POWER TRAIN, FUEL/PROPULSION SYSTEM
Warning light came on stating that we needed to have the electrical system checked asap. Vehicle would not charge from Level 2 charger. It needed to be towed from our house to the dealer to get its ICCU replaced since there was a risk that it would no longer power vehicle on 4 mile drive to dealer for repair. Problem was fixed in one week by Roseville Hyundai by replacing the ICCU in the vehicle
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714239January 29, 2026
ELECTRICAL SYSTEM
The ICCU (integrated charging control unit) failed on Friday 1/23/26 as I was driving home. Two warnings came on, check electrical system and stop vehicle, car went into limp mode and was later towed to dealership where ICCU failure was diagnosed. Part is backordered, no ETA available for replacement. No loaner vehicles available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714067January 28, 2026
UNKNOWN OR OTHER
Horn keeps breaking and doesn't work dealer said this is a known issue. This will be my second time replacing it when I schedule appt maybe water keeps getting inside it and ruining it? Please fix this it is a safety hazard
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714065January 28, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN
12 volt battery drained in my driveway on 1/20. Vehicle was completely dead including door and hatch locks. Roadside assistance jumped the 12 volt battery. Vehicle message said, “Insufficient power. Check Electrical system”. Vehicle was towed to local Hyundai dealer, who diagnosed an ICCU failure. The dealer has four other Ioniq 5s with the same problem. Replacement ICCU is on back order with no ETA for delivery. There were no warnings prior to the ICCU failure. If the vehicle were being driven when this failure occurred, the loss of power would have put all occupants at great risk.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714015January 28, 2026
ELECTRICAL SYSTEM, ENGINE, FUEL/PROPULSION SYSTEM
ICCU failed while driving. This resulted in the vehicle going into limp mode while driving, cause the speed to slow dramatically and rendering it unable to be driven. Luckily, this happened close to home and I was able to get a tow truck to bring it to the dealership. Otherwise I would have been stranded. This problem is know, and was repair by Hyundai but there is no true fix as of yet, which continues to put drivers at risk. At the time of the failure the warning light "check vehicle electrical system" and "power limited" came on.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11713996January 28, 2026
FUEL/PROPULSION SYSTEM
While driving car, got warning to “Check electric vehicle system” quickly followed by “Stop vehicle and check power supply”. Car went into “Power Limited” turtle mode and speed dropped down to 25mph without warning. Was able to limp the mile and a half home but glad I was not driving on the interstate at high speed at the time. Dealer confirms ICCU failed and needs replaced, part backordered and no ETA on when it will be back in stock.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11713881January 28, 2026
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
I heard a popping sound from behind driver seat when I started the car. A few minutes later a dash warning showed up "stop vehicle and check battery state" followed by a complete loss of power on the road within 3 miles of reduced power driving (I was trying to find a safe spot to turn out of 6 lane road). Vehicle had to be towed to dealer who states the Integrated Charge Control Unit ICCU is not working and needs to be replaced. (i suspect the popping sound was related to that - ?blown fuse). The Part is on back order and has to be ordered from Korea and during the weeks long wait they do not have a loaner care to provide. This ICCU issue had a recall with software fix in 2025 which was performed on my vehicle. Why is Hyundai not fixing this problem for good. And why are they not providing me a loaner car?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11713480January 26, 2026
ELECTRICAL SYSTEM
Jan 2, 2026. Vehicle made a popping sound and threw an error message. Took it to the dealer. Dealer diagnosed it with failed ICCU (integrated charge control unit?). Said that they had recently gotten 8 more failed units. Said that there are no more parts in stock in the US and Hyundai must manufacture and ship more. ETA is March but they are not sure. I do not believe Hyundai’s assertion that this only affect 2% of their EVs if they cannot keep parts in stock.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to Hyundai Ioniq 5