Hyundai Ioniq 5 Complaints (2023)

385 consumer complaints on file.

#11730289April 9, 2026
STRUCTURE:BODY, ELECTRICAL SYSTEM, UNKNOWN OR OTHER
On XXXXX, while parked at a campsite approximately two hours from my home, the vehicle displayed an “electrical failure” warning on the dashboard. The vehicle had been parked for less than 20 minutes when this issue occurred. I contacted Hyundai customer support that same evening to report the problem (Case #XXXXXX). On April 4, 2026, the vehicle was towed via Hyundai roadside assistance to Winner Hyundai in Dover, Delaware, where Tracy is my current point of contact. This situation left my family of four, along with our belongings and pet, stranded without transportation. Despite significant effort, we were unable to secure a rental vehicle in the Dewey Beach area, even after contacting multiple rental agencies and the dealership directly. This was later resolved, and I am currently in a rental through Enterprise; however, the stress and uncertainty of potentially being stranded was significant and unacceptable. While at the dealership, my wife witnessed the tow operator unloading the vehicle without proper equipment to safely lower it. As a result, the vehicle’s hitch made forceful contact with the pavement and became lodged. Multiple dealership employees observed the incident. After considerable effort to free the vehicle, it was released abruptly and rolled into another vehicle on the lot, causing additional damage. An argument then occurred between the dealership owner and the tow operator, which my wife was forced to witness. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11730155April 9, 2026
POWER TRAIN, ELECTRICAL SYSTEM
There was sudden power reduced and turn to the limp mode(Turtle symbol popped up). After pull over my vehicle to highway shoulder, the vehicle became total power loss. Unable to drive anywhere. It was a dangerous situation for my family. We waited tow car and took my vehicle to Hyundai dealership which located close to my house. They diagnosed my car and after a day. They told me it needs to be replaced a ICCU assembly and Fuse. There was no ETA for the parts. They provided me a loaner’s car. After about 15 days, they fixed and I was able to take my car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729695April 7, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN
7 incidents of electrical drive problem incidents 1-3car would not start despite full battery Incident 4 same thing and car went to dealer, they said know problem and they would fix it overnight by downloading new software and charge about $400 for new 12V battery Incident 5 While on freeway using cruise control card speed varied wildly I disabled cruise control and with manual throttle same problem Incident. 6 In middle of traffic car went blank no lights or anything. I tried to restart 3 times and nothing, so I sat back and was in process of calling for tow. I did nothing and car violently accelerated and turned into steel pole. Only injury I had was bump on head that went away. As soon as the ghost mode engaged I hit the brake which likely prevented more damage to me, but front end of car was damage Incident 7 While I was detained someone else drove car to dealer and driver reported felt like driving on ice with rapid direction and speed changes Currently at dealer where neither dealer or Hyundai will take of problem and I get run arround from Hyundai and dealer. Dealer claim the don’t know is the problem. Dealer has had car for approximately 65 days Bottom line, the car is totally unsafe to drive and very dangerous
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11729574April 7, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN
On 11/7/25 , we were driving my 2023 Hyundai Ioniq 5 to a friend's home in rural [XXX] , a trip of approximately 160 miles. At around 5:00 PM, we stopped about halfway to our destination to charge the battery. The car would not charge above 47%. While we continued to attempt to charge the battery, the console displayed a Check Electrical System Warning message, and we received the DTC P1AA700 via BlueLink. We were concerned about our safety on the drive up to the mountains. We were afraid the car would stop running on the highway and cause an accident. We were also concerned the car would die in a remote area and we would be stranded. However, the dealership was closed for the weekend. We drove carefully to our friend's home. I contacted Stevens Creek Hyundai on 11/10/25 and arranged to bring the car in on 11/11/25. It had 13,652 miles on it at that time. Eventually, the dealer confirmed the DTC P1AA700 and said they would need to order a new EGMP battery. The car was in the shop for 128 days, waiting for Hyundai to "build a battery" in [XXX] . Eventually, Stevens Creek Hyundai replaced the EV battery and I picked up the car. Given the delay in repairing my car and the growing evidence of Hyundai battery failures, we wanted to report this problem to the authorities. 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
#11729262April 5, 2026
ELECTRICAL SYSTEM, POWER TRAIN
While driving the vehicle, the ICCU failed. The vehicle shut down in the middle of traffic without any warnings.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728787April 2, 2026
ELECTRICAL SYSTEM
Failure of Integrated Charge Control Unit (ICCU). Vehicle stopped charging 12V service battery from main high voltage battery. Displayed "Check Electric Vehicle System" followed by "Stop vehicle and check power supply". Vehicle to operate normally though Cruise Control stopped working. Continued to drive the few miles to our home. Once home checked service battery with battery monitor. Showed 12.1V and did not show battery being charged with vehicle ON (Ready) or OFF. Had vehicle towed to Hyundai service facility where the ICCU failure was confirmed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728740April 2, 2026
FUEL/PROPULSION SYSTEM
I am writing to notify you of an Integrated Charging Control Unit (ICCU) failure on my 2023 Hyundai Ioniq 5, purchased in October of 2023. While driving home on March 4 2026, the dashboard displayed the warning "Check vehicle electrical system," and then a "pull over safely" warning. I had to leave the vehicle in a parking lot and walk home. It was towed to a dealer on March 5, 2026 to diagnose and repair the problem. The car has just under 17000 miles on it. I was told the dealer was swamped with Ioniqs with this problem and had no ETA for parts. Fortunately they will be able to repair our car next week. Hyundai claims the replacement part has been redesigned to address the problem. Interestingly, I'm reading that Hyundai has issued a recall for some vehicles of this make and model year for this very serious issue; mind bogglingly we received no such notice.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728697April 2, 2026
UNKNOWN OR OTHER, ELECTRICAL SYSTEM
On Mar 29th, I got a 12v battery low voltage warning sign at 4pm. Jumpstarted the car and drove back to the home. On Mar 30th, car would not start so I had it towed to Downey Hyundai by roadside assistance. On Mar 30th, 12:41pm dealer confirmed that the it will need an "ICCU" and have ordered the part, but there are no loaners and no ETA for the part at this time. Problem has been reproduced and confirmed by dealer. There were no other warning signs prior to the failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727468March 27, 2026
ELECTRICAL SYSTEM
My vehicle lost power as I was driving after warnings from the electrical system. The vehicle was towed to a Hyundai dealership where it was diagnosed with ICCU failure. The ICCU system was replaced by dealer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727345March 26, 2026
ELECTRICAL SYSTEM
ICCU failed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727344March 26, 2026
ELECTRICAL SYSTEM
AWD functionality of car broken. Had to get traction motor replaced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726747March 24, 2026
ELECTRICAL SYSTEM, ENGINE
Car lost charge quickly, went into limp mode while I was driving on the highway. I had to pull of the road several times and try to get it to a charging station. It barely made it after the lose of power. Charged it to 80% and it would only go up to a range of 100 miles. Took it to the dealership and they confirmed it needed a whole new main battery. ICCU had already been replaced. Had to wait over 5 months for replacement parts.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726622March 24, 2026
ELECTRICAL SYSTEM
My 2023 Ioniq 5 had the ICCU replacedin 2025 and then it failed again in late January 2026. The car has been at the dealership since then awaiting a new part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726200March 22, 2026
ELECTRICAL SYSTEM
The ICCU unit malfunctioned and needed to be replaced. It occurred while I was driving home and I was lucky enough to make it to my driveway. If it had been on the freeway I would have been stuck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726028March 21, 2026
ELECTRICAL SYSTEM
2023 Hyundai Ioniq 5 displayed a "Check Vehicle Electrical System" warning on the dashboard. The Integrated Charging Control Unit(ICCU) failed, and it rendered the car inoperable. I could not drive it and was left stranded, waiting for a tow truck in below-freezing temperatures as the car completely died. Hyundai has previously recalled the vehicle for this, and my car had been serviced in the recall campaign, so the issue is clear: the recall did not fix this issue. The car has been sitting at the service center for two weeks, waiting in the repair queue behind other Ioniq 5 cars with the same ICCU failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725930March 20, 2026
ELECTRICAL SYSTEM, POWER TRAIN
ICCU failure, left stranded for a tow
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725725March 19, 2026
ELECTRICAL SYSTEM
ICCU failure. Car was at 16% when I tried to charge the car. Heard a pop sound from underneath the car and the dashboard had a message saying to check the electrical system.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725580March 19, 2026
ELECTRICAL SYSTEM
The ICCU failed after completing all required recalls. The car stopped working while driving. The car losing power while driving could have created an accident had I not pulled over in time. The part was replaced by Hyundai under warranty and is now fixed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725456March 19, 2026
POWER TRAIN
The ICCU on my Ioniq 5 failed about a year after getting the software update that supposedly addressed the issue. I am very concerned about the reliability of my car going forward as it doesn't appear Hyundai has addressed the issue and I have no reason to think the replacement ICCU component won't fail as well.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725443March 19, 2026
ELECTRICAL SYSTEM
The ICCU electrical system failed for the 2 nd time owning the car. Resulting in another 2 month wait to get it repaired. The dealer says they put the same part in, that may fail again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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