Hyundai Ioniq 5 Complaints

1,350 consumer complaints on file.

#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
#11644857February 25, 2025
ELECTRICAL SYSTEM, POWER TRAIN
About 2 minutes after I started driving, I got a "Stop Vehicle and Check Power Supply" warning. The car slower to about 20 mph and would not go any faster. After returning home, I had the car towed to the dealership. Hyundai said that the ICCU unit failed. This was days after the same dealer performed recall work that was supposed to address ICCU issues.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11644485February 24, 2025
ELECTRICAL SYSTEM, ENGINE
Even after getting all recalls done my IONIQ5 had an ICCU failure. I feel that latest update which was supposed to fix ICCU issue actually accentuated it. With number of complaints on this car for ICCU failure there should class action law suit on Hyundai
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11644388February 23, 2025
ELECTRICAL SYSTEM, VEHICLE SPEED CONTROL
On the morning of February 3rd, 2025, while driving, I heard a pop. A few seconds later, as I approached an intersection, a yellow warning appeared that instructed me to "Check the Electric Vehicle System". It minimized to a small caution light. I attempted to continue driving, pulling through the intersection; however, the vehicle had an abrupt loss of power; I was unable to proceed over 20-25 mph. In total no more than 2-3 mins passed from hearing the pop to loss of power. I pulled into a neighborhood, stopped the car, and consulted the owner's manual for direction on the warning light. While parked, and an estimated 8-10 minutes after hearing the first pop, I received a second warning, this time in red. It said "Turn power off immediately. Check power supply." I turned car off/contacted roadside, as advised in my manual, for a tow. After review at the dealership, I was originally told I needed a new 12V that it had died while I was driving. I authorized the replacement, though I also indicated to the service department that if that CAN happen, it really does not make sense AND there should be a different warning indicator for a failed 12v that could be replaced roadside versus instructing for a tow.However, after replacing my 12v the service advisor indicated that the car pulled codes and that the ICCU and its fuse seemed to have failed, which likely caused the damage to the 12v battery. After a few days of testing, my car was cleared for replacement of the failed ICCU by Hyundai's techline on February 10th. The dealer then provided a vehicle for my use while I await repairs. I was told a part could arrive the 18th or the 25th and the repair could take 3-4 days once the parts are received. It is still in shop with no updates. On 2/13/25 I filed a complaint to Hyundai; I have not received a response to date. All recalls for these issues had been performed on my vehicle in November 2024; we can no longer, in good conscience, use this vehicle. It is unsafe.
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
#11643669February 19, 2025
ELECTRICAL SYSTEM
My vehicle’s ICCU failed resulting in my 12v battery suddenly, and without warning, fail. Leaving me stranded. This seems to be a widespread issue that isn’t being addressed properly as following the manufacturer’s list of recall updates never solved the issue up to my day of failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643656February 19, 2025
ELECTRICAL SYSTEM
Car had a warning Check Electrical System and the 12volt drained. ICCU Failed car undrivable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643414February 18, 2025
UNKNOWN OR OTHER
Car won't super charge. ICCU has been backordered for a month.
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
#11643374February 18, 2025
FUEL/PROPULSION SYSTEM, ELECTRICAL SYSTEM, POWER TRAIN
My car suffered a failure of the Integrated Charge Control Unit ("ICCU") which makes the car underivable. This is the third time that I have had an issue with the ICCU. The first two times, it failed to charge the 12V battery, leading to a loss of all 12V systems and being unable to drive the car. This third time, the car now refuses to charge on AC power. Hyundai has tried to "repair" this issue with software updates, but it doesn't fix it. Now I am waiting for a remanufactured ICCU to replace my broken one.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643344February 18, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN
This is the second time I’ve taken my Hyundai IONIQ 5 in to Hyundai as part of a recall “fix” for ICCU Failure. Each time, the car has been operating fine, I take the car in for the “fix” as it’s required, and then shortly after the car breaks down while it’s in motion / operating. I’ve concluded these are not “fixes” and I have no ability to trust the safety or reliability of the vehicle. 1) ICCU Failure 8 Days After Recall “Fix”. Same thing happened the previous year. Took the car in for the recall “Fix” and shortly after the car dangerous broke down while driving. 2) Car became a brick. 3) Yes, Hyundai Service Center has confirmed ICCU fault. 4) Yes, see #3 5) Yes, minutes before the car became inoperable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643201February 17, 2025
ENGINE
Battery warning appeared. Car stopped after a few minutes. Car can’t be started. Complete list of power. Dealer confirmed it was the ICCU. I had a recall service done in 11.19.2024y last time I got an info about a recall was 1.9.2024
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
#11642879February 15, 2025
ELECTRICAL SYSTEM
The 12v battery had zero energy after an overnight charge of the HV battery. The car was driven yesterday for 400 miles and three DC charge events. The car was plugged into my level 2 charger at 11 pm and it charged the HV battery to 100% overnight. Today, I was able to unlock the car electrically, but that appeared to be the last action the 12v battery could perform. All displays were dark, I could not start the car, and the emergency flashers would not work. The HV battery was at 100% from the overnight level 2 charge because the indicator lights by the charger were all lit and when I applied a jump pack to the 12v battery, the dash indicated 100% battery level. I was able to put the car in neutral by applying the jump pack to the 12v battery so the car could be pulled up the flatbed tow truck. This car has had all recalls performed. Please open a new investigation regarding the ICCU failure because it is clear from the data that Hyundai has not resolved the problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11642790February 14, 2025
ELECTRICAL SYSTEM
My vehicle will not charge with my Chargepoint Home Charger. It only charges on a DC High capacity charger. I have completed all of the recalls at the dealership where I purchased the car. The service manager told me the vehicle is unsafe to drive. It has been at the dealership for two weeks while waiting for a backordered ICCU. The repair will take place upon receipt of the part. I have no faith that the repair will work. In any case I am now afraid to drive the vehicle even if the dealer says it is repaired.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11642787February 14, 2025
ELECTRICAL SYSTEM
Car will start but has no propulsion. Error says “Check EV System”
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11642733February 14, 2025
ELECTRICAL SYSTEM
ICCU failure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11642666February 14, 2025
ELECTRICAL SYSTEM, ENGINE
Have had 2-12v battery issues and now an ICCU failure with about 28 days at the dealership with no parts to repair. Seems to a common issue popping up
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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