Hyundai Ioniq 5 Complaints (2023)

385 consumer complaints on file.

#11649428March 20, 2025
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
ICCU failure, loud pop sound and then a "Check Electrical System" then after a minute a turtle icon and the car slowed down and stopped on its own in the middle of a freeway. Hyundai towed it and waiting for repairs. This was highly dangerous stopping in the middle of the freeway with no control over the vehicle and fast cars driving by.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649259March 19, 2025
ELECTRICAL SYSTEM
The car made a loud popping sound as I was driving and then error messages appeared on my dash saying "Check electric vehicle system" and "Stop vehicle and check power supply". The car was slowed down to 20 mph on a 45 mph road and I pulled over to get out of traffic. Luckily I wasn't far from home so I drove back very slowly. I had the car towed to the dealership and they have indicated that the ICCU failed and needs to be replaced, but they don't have any available until possibly 4/1/25. There were no messages received prior to the failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648454March 15, 2025
ELECTRICAL SYSTEM
ICCU failed during driving Car could not go over 12 mph for about 10 minutes and then failed completely No estimated time for delivery of part Totally unusable
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648332March 14, 2025
ELECTRICAL SYSTEM, STEERING, FUEL/PROPULSION SYSTEM
The first time the "aux" battery was not charging completely. 2nd time pretty much same issue, they claimed to have performed a software update, 3rd time warning lights came on "Problem, check electrical system" ..something like this. They told me to bring the vehicle to the dealership. After reading the problems stem from the ICCU, I decided to call them to ask if I should tow it in, due to all the warnings. After this we could not even get into the vehicle or drive it. Took us and the tow driver 4 attempts to get it out of the garage, down driveway and it had to be pulled onto the flat bed. They agreed and said that if there were any tow fees, they would pay them. Furthermore they said they would supply a vehicle to use while mine was being repaired. This was on Jan 25th, they still have not returned my vehicle, claiming they are waiting on parts, I've had to call them to check on it, this week NO contact what so ever.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648132March 13, 2025
ELECTRICAL SYSTEM
ICCU failure resulting in car being undriveable. Warning lights appeared, so towed the car to the dealer. Dealer confirmed ICCU failed and accompanying fuse also broken. New parts on back order for over a month now.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647491March 10, 2025
ELECTRICAL SYSTEM, UNKNOWN OR OTHER, POWER TRAIN
ICCU ASSY and Fuse had to be replaced as well as the 12 volt battery which failed a few weeks after. The car lost power on a main road 2/3/25 and we were just able to get into a parking lot. The message to check power supply came on and we lost power immediately. The 12 volt battery failed when I went to pick the car up from the dealership after they worked on the bluelink settings that had to be reconfigured a couple weeks later 2/25/25. I was lucky that I didn't have to be towed that time. I had just got into the car to leave and the warning message came on to check the power supply. My dealer service dept was wonderful. I have absolutely no complaints about them but I am angry that Hyundai is putting these same bad parts in the 2025 Ioniq 5 and we can't trust our car! We love this car and were planning to buy another one but will wait to see if Hyundai does the right thing and fixes this problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647483March 10, 2025
POWER TRAIN, ELECTRICAL SYSTEM
Charging system warning light (for 12volt battery) illuminated on left side of instrument cluster. Warning in center of panel said pull over and stop vehicle. Had vehicle towed to dealership and diagnosis was “failed ICCU”. Been at dealer going on 4 weeks
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647159March 8, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
Was driving the car and electrical system failure alert came on. Could not drive over 20 miles an hour on highway and then car just died once I got on side street
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647154March 8, 2025
ELECTRICAL SYSTEM
On [XXX], I was driving at about 45mph on main road and heard a pop noise from under car followed by warning display on dash (messages and images showing no charging to wheels) and immediately experienced a tremendous decrease in power. The foot pedal was no longer responding as the power continued to decrease over a period of approx.20 minutes. I was very lucky not to get rear ended as it was rush hour and there was heavy and fast traffic on that road. Engaging emergency flashers appeared to slow the car further as I kept ducking in and out of traffic trying to get home safely. The car was towed to the closest dealership (Preston Hyundai in Millsboro) and has been there since. Therefore, it is available for inspection. Although I have called the service dept. numerous times, I have not gotten any answers as to problem, fix or given a loaner /rental. It will be 3 weeks this coming Monday. They told me that the car has been run through tests and the engineers have not "diagnosed" the problem! I was told it might be the ICCU and that they have 2 other cars in the lot behind me with similar issues. The vehicle was up to date on all recalls (including the prior recall on ICCU issue). Therefore, it has been inspected previously. There was no warning prior to the failure. i noticed that the VIN is not on the list of recalled vehicles- it should have been!! I have contacted the Hyundai national customer service (855-371-9460) on 3/6/25 and explained I was getting the run-around and not being furnished with loaner/rental. I do feel that they should be responsible for the towing cost as well. I was told that a case manager will contact me within 2-3 business days which means sometime next week. Hopefully, he/she will handle the customer service issue with re: to loaner/rental. I hope you will be able to get action on resolving the car issue as those cars are "accidents waiting to happen"!! 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
#11646799March 6, 2025
POWER TRAIN, FUEL/PROPULSION SYSTEM, ELECTRICAL SYSTEM
While running errands, my Ioniq 5 suddenly made a pop sound, and the dashboard displayed a “Check Electrical System” warning, followed by a loud alert and a message instructing me to “Stop Vehicle and Check Power Supply.” I was able to safely park in a lot and called for a tow. At that point, the car was still operable, but after being unloaded from the flatbed, it would no longer turn on. The issue was diagnosed as a failed ICCU, and I was informed it will take one month to receive the parts and complete the repair. Had this failure occurred on a highway or busy street, it could have been extremely dangerous. I am fortunate that it happened in a safe location.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11646006March 3, 2025
UNKNOWN OR OTHER
My horn has quit working. I don’t use it often do it could have been broken for more than 6 months, but I just discovered it following the service for a number of recalls. Apparently, this is a common problem. In 41 years of car ownership and driving, this is a first for me. My car just passed 50,000 miles last week and I’m afraid it might not be covered under warranty.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11645878March 2, 2025
ELECTRICAL SYSTEM
While driving my car in a high traffic area, it stopped working. Completely stopped. It would not accelerate whatsoever and I was forced to stop on this busy street, luckily right past an intersection. This is a known problem with this vehicle. Yes there is a recall on the car but getting scheduled to have the recall done has been a very long process with me being told it would be months to fit me in.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11645852March 2, 2025
ELECTRICAL SYSTEM
ICCU failure resulted in a loud pop and then loss of most power. Was still able to move the car but was limited to ~22 miles per hour. Had to be towed to the dealer. Tow and service from the dealer is pending, but my understanding from talking to service is that this is a relatively common issue and will require replacement of the ICCU unit. The car has had multiple recalls to attempt to address this issue preemptively including a little over a month ago. There were no issues reported at that the time of those recall services. Incident occurred without warning. After the pop and loss of power electrical and service warnings popped up all over the dashboard.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11645735March 1, 2025
POWER TRAIN, FUEL/PROPULSION SYSTEM
On [XXX], I was pulling into my driveway when I heard a loud “clunk” and an error message came up on the dashboard saying “Check Electric Vehicle System.” I checked the 12V battery which was at 11.9 volts, so I first tried charging it with an external battery charger. However, the error message still came up, and when I tried driving on my street it was limited to 25 miles per hour, and eventually I got the error “Stop vehicle and check power supply” and the car slowed to a crawl. There was no warning prior to the failure. I had the latest ICCU software update recall performed at Capitol Hyundai in San Jose, CA on December 30, 2024. The next day, I had the car towed to Capitol Hyundai; a week later they diagnosed the problem as a blown fuse and ICCU failure. There is no estimate on when they will receive a new ICCU part to repair it. 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
#11645298February 27, 2025
ELECTRICAL SYSTEM
After having recall service of ICCU applied, the symptoms that initiated the recall surfaced. I had not driven 200 miles before I received a warning that the electrical system needed attention, followed by a warning the battery (12volt) had an issue and to stop driving. On top of that, the car will not accept a charge.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11644979February 26, 2025
ELECTRICAL SYSTEM
ICCU fuse blown. Most likely the ICCU failed. Getting it towed now.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643957February 20, 2025
ELECTRICAL SYSTEM, ENGINE
I took my Hyundai Ionqi 5 Electric Set AWD in for two recalls. After picking up the car, I left the car dealership and merged onto the highway. Within 1-2 minutes after I left the dealership, the dashboard was flashing red circle with an exclamation point that said the electrical system was low. I could no longer accelerate. I proceeded to move to the right with traffic traveling 60-70 mph. I was extremely scared as I tried to drive on the side of the road. I had to turn on my flashers to get to the next exit. I was going about 20-25 mph. As I tried to go back to the dealership, it died in an intersection. Again, I was concerned about my safety with my car unable to move. I had the car towed back to the dealership. They said it was the 12 volt battery, but when they looked further they said it was the Integrated Charging Control Unit (ICCU) which wasn't working. The dealership said that they checked the 12 volt battery and the ICCU when they finished the recalls and everything was OK. That doesn't make any sense when everything dies within 1-2 minutes. Then the dealership said they would not be able to get a part until the end of March.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643891February 20, 2025
ELECTRICAL SYSTEM
After taking 2023 Hyundai Ionic5 in three times due to recall notice for ICCU software update over the course of 18 months, ICCU still failed causing complete loss of power. Car has less than 5,000 miles on it. Have been told no estimate available on time it will take to get part replacement. Could be months.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643392February 18, 2025
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
ICCU error, check power source error then all electrical in the vehicle went out. No power steering, no acceleration, anll screens went black, all recalls addressed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643023February 16, 2025
FUEL/PROPULSION SYSTEM, POWER TRAIN, ELECTRICAL SYSTEM
While driving the vehicle on a local road at around 40 mph, check electrical system light came on and I heard a pop sound behind me. The vehicle would suddenly go no faster than 30 mph. Upon further driving, for additional quarter mile, it would drive no faster than 12 mph. I was able to very slowly drive it 1.5 mi back home. Once I arrive home, the vehicle was no longer operational. I confirmed that the 12-volt battery was at an extremely low charge and having the vehicle on would not charge the 12 volt battery. I believe the ICCU failed. I am waiting for Hyundai to further diagnose this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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