Hyundai Ioniq 5 Complaints (2024)

222 consumer complaints on file.

#11678300August 4, 2025
ELECTRICAL SYSTEM:12V/24V/48V BATTERY, ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
The contact's daughter owns a 2024 Hyundai Ioniq 5. The contact stated that the vehicle had been delayed in starting on several occasions. Additionally, the contact stated that while the contact's daughter was driving at an undisclosed speed, the vehicle suddenly stalled. The contact stated that the failures had occurred intermittently. The vehicle was taken to the local dealer, where it was diagnosed that the battery had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677477July 31, 2025
ELECTRICAL SYSTEM
The car was down to 16% charge on the battery so I put it on the 220 v charger at my house. The next day I went to leave and removed the charger from the car and started it. I heard a pop and thought the garbage truck doing weekly pickup had run over something but now I think it was a noise from the failed component. Got in the car and started it and saw a yellow circle with the words “check electrical system”; I had seen this error message once before following a software update to the ICCU back in September 2024 [turned the car off and back on and the error went away] so I did the same thing again but the error didn’t go away instead the circle warning on the screen went to a red circle and read “stop the car and check the electrical system”. Went inside the house and called the closest Hyundai dealership [in Longmont since the one in Boulder closed with no warning] and after some back and forth they told me to have the car towed in since the 12 v battery charging system wasn’t working and it controls many things like power steering and regeneration braking and can cause a loss of power making the car undriveable and unsafe. Towed the car in and got a diagnosis of a failed ICCU module. The part is on order and I have no idea when it might actually come in and get installed. Hyundai is aware of problems with the ICCU and 12 v charging system and has issued several software recalls; this ICCU problem is all over the Hyundai Ioniq 5 forums and is a widespread issue with the Ioniq 5. I’m lucky this failure occurred at my home versus when I was driving or many miles away or at night cuz I would have been stranded.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677423July 31, 2025
ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD
I am the owner of a 2024 Hyundai Ioniq 5 with Vehicle Identification Number [XXX] I purchased/leased this vehicle on [XXX] from Stockton Hyundai. Over the last couple of months my vehicle has experienced an ongoing charging defect: it only charges on Level 1 but fails to charge properly using Level 2 or DC fast chargers, which significantly impairs its use, value, and convenience — a key feature advertised for this vehicle. The issue has not been confirmed by the dealer as they have not been able to figure out why it’s happening and the vehicle has not been inspected by anyone else I also feel like it’s a safety risk because I’m at risk of being stranded. 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
#11674901July 20, 2025
ELECTRICAL SYSTEM
On 4/7/2025 the vehicle came to a dead stop while driving about 45 mph on a highway entrance. I was able to get the car to the edge of the highway but it was completely inoperable. It required towing to the nearest dealer. After a day diagnosis it was determined that the ICCU and 12 volt battery had failed. I was stranded on the edge of the highway while waiting for a tow. The problem was confirmed by the dealer, replacement parts were ordered and the repair completed seven weeks later. A warning message appeared so briefly that I could not read it before the car failed completely.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672966July 11, 2025
POWER TRAIN
I was driving 10-15km/h over speed bump suddenly my car going backwards I took a glimpse on my display panel and it showed that the car was in D mode. This is seriously can cause accident!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672732July 11, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
I have a lease on a 2024 Hyundai Icoprniq 5. There is a recall due to ICCU issues. We had this car in service but it did not fix the issue. The car is now sitting dead in my driveway and will not move. Hyundai is refusing to do anything to fix the problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11671393July 6, 2025
ELECTRICAL SYSTEM, POWER TRAIN, FUEL/PROPULSION SYSTEM
I had ICCU software recall done in spring 2025 then Vehicle died twice while driving on highway, ...suddenly. "warning 12 volt batt low pull over" stranding my family twice on highway. could not operate anything. Mc Govern Hyundai said it was fixed after 44 days. 2 days later failed again .dealer said it was ok again but would not replace ICCU or 12v batt. the amber light that indicates when !2v batt. is being charged would never come on. they said they found nothing wrong.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669293June 25, 2025
ELECTRICAL SYSTEM, ENGINE, FUEL/PROPULSION SYSTEM
The car made a loud popping noise and immediately started displaying electrical system fault errors. The car propulsion stopped within 15 seconds and was not able to be moved after. I was on the freeway and just barely made it over to the side. Car was not able to be towed by a regular tow truck because the electrical system was gone and the car was not able to be shifted into neutral. Jump starting the battery did nothing. Car was sent to the dealer who confirmed that the car sustained an ICCU failure which controls the entire battery electric system. The ICCU had to be replaced. There is already a mandatory recall on the vehicle regarding the ICCU. The recall was to check the status and confirm that the ICCU was working properly and in good condition. I had this recall done BEFORE the ICCU failed, so even though the recall check was performed, the ICCU still failed and put me in a very dangerous situation. The car is 6 months old and has 6200 miles on the odometer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11668456June 22, 2025
ELECTRICAL SYSTEM, POWER TRAIN, FUEL/PROPULSION SYSTEM
Dear NHTSA, On [XXX] at [XXX] CST, my 2024 Hyundai Ioniq 5 SEL experienced a sudden ICCU failure. While reversing into my driveway, I heard a loud “pop,” followed by warning messages: “Stop vehicle and check power supply” and “Check electric vehicle system.” A DTC scan showed code P1A90(96). The car became inoperable and had to be towed to a Hyundai dealership. The dealer confirmed ICCU failure and replaced both the ICCU and fuse on 6/17/2025. However, the replacement was not a redesigned part—it was the same model that failed. I purchased this vehicle in March 2025 as a Certified Pre-Owned with ~12,000 miles. All recall-related ICCU updates had been completed before this incident. There were no warning signs before the failure. This failure could have been dangerous had it occurred on a highway, in extreme weather, or far from help with my [XXX] daughter with me. I no longer feel safe driving this car. Hyundai’s recall remedy is clearly not effective, and they continue replacing defective ICCUs with the same flawed units. They have not disclosed the root cause or implemented a permanent fix. I urge NHTSA to: Investigate ongoing ICCU failures despite recall compliance. Mandate a stop-sale of affected vehicles until a real fix is found. Require Hyundai to disclose the root cause. Consider a buyback program if no safe solution is available. This is a serious safety risk. These failures will continue without regulatory action. Sincerely, [XXX] 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
#11667590June 17, 2025
ELECTRICAL SYSTEM
I was driving on a highway during traffic on June 17 2025 and my ioniq 5 car started to make weird sound. Then after a minute, it abruptly started to push back and forth and the noise became stronger. A couple of minutes later, the "Check electrical vehicle system" sign was displayed on the screen. I pulled over due to the scare and turned off the car. A minute later, turned ON the car and drove. Same exact thing happened a day before too. This has not happened before since I got the car in Dec 2024. Car's battery was at 82%.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11667297June 16, 2025
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, LANE DEPARTURE: BLIND SPOT DETECTION, BACK OVER PREVENTION: WARNINGS
While backing into my driveway if a car passes in front on the street my car will not continue backing up. This also happens in parking lots. While backing out of my driveway onto the street and staying in the lane closest to the driveway, traffic in the far lane will cause the car to stop moving even though the street is more than wide enough to accommodate both cars without crossing the double yellow lines. As I live on a busy street this can cause an accident. In both cases turning off the parkin sensors with the dashboard button has no effect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11665360June 6, 2025
ELECTRICAL SYSTEM
Got a “check electrical system” alert and then a “stop vehicle and check power supply” and “12V battery voltage low. Stop safely” before my car completely turned off. This started on May 30 and June 2nd 2025. Car was towed to the dealer and pending diagnostics.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11665145June 5, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
Vehicle lost power on a two lane highway with a 55mph speed limit, which increased the risk of an accident. Warning lights appeared after the failure occurred; essentially giving the driver little to no warning. The vehicle kept slowing down to 30-25 mph, but fortunately close enough to home and was able to slowly roll into the garage. The vehicle was towed to the dealership and will take 2 months for the ICCU and ICCU fuse to be replaced due to backordered parts. This occurred after an ICCU update was done in 12/24.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11661948May 19, 2025
FUEL/PROPULSION SYSTEM, ELECTRICAL SYSTEM, POWER TRAIN
ICCU (Intergrated Charging Control Unit) failed after two mandatory recalls were completed. Vehicle is not drivable as it’s awaiting for a replacement ICCU (backordered). Replacement ICCU will not remedy the issue since it has not been improved upon from the original failure. Vehicle shutdown on a two lane highway with a 65mph speed limit. The section where the vehicle shutdown was without cellular service and on a bend with no shoulder, which increased the risk of an accident. The problem was reproduced in other vehicles using the same part. The component has been inspected by the manufacturer and dealer with a temporary remedy of replacement. Warning lights appeared after the failure occurred; essentially giving the driver no warning or time to react. The vehicle displayed a warning message to pull over and turn off vehicle immediately. Power was reduced to 15mph for about 15-20 minutes.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11661824May 19, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
On Monday May 12, 2025, while driving my Ioniq5 (2024) several warnings appeared concerning the EV electrical system. One warning dealt with 12 volt battery issue and other warning alerted the entire vehicle's electrical system was failing with instruction to stop driving vehicle immediately. I was out of town and my car was towed to local hyundai dealership. The problem appears to be a faulty ICCU component and parts have been ordered. Having my brand new EV turn off in traffic is scary and this experience has been frustrating and nerve wrecking. Knowing Hyundai was aware of this problem makes it even worse.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11661520May 16, 2025
ELECTRICAL SYSTEM, POWER TRAIN
ECCU failure unexpectedly failed while driving . Failure occurred on busy road, car went from being able to drive to suddenly complete stop from the vehicle with no warning. Car was not able to restart after failure. Dealership confirmed ECCU failure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11660564May 12, 2025
STRUCTURE:BODY
While driving the car on the highway at about 50 mph, the driver side door unlatched and opened.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11657333April 28, 2025
ELECTRICAL SYSTEM
Battery Drained
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11657317April 28, 2025
ELECTRICAL SYSTEM
The Integrated Charging Control Unit failed while driving. The car went into limp mode and would not drive over 25 mph. The dealership confirmed the issue and the parts are on backorder for an undetermined amount of time.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656419April 23, 2025
SERVICE BRAKES
On [XXX], I was in New Jersey waiting for my mother to finish shopping. In an effort to preserve battery life, I turned off the engine while waiting. Upon her return, I placed my foot on the brake pedal and started the car. As soon as I shifted the gear into "Drive," the vehicle made an unusual sound and began to roll forward. At no point did I remove my foot from the brake pedal, and I immediately applied more pressure. However, the brakes did not respond. Panicked by the fact that a parked car was directly in front of me, I quickly shifted the gear into "Park" to engage the emergency brake. Fortunately, this action brought the vehicle to a stop, and no damage occurred. I turned the vehicle off and restarted it after which the brakes functioned properly. The experience was extremely alarming. This is not the first time I have experienced this issue. On [XXX], a similar incident occurred while I was stopped at a red light. At that time, I assumed I may not have applied sufficient pressure to the brake pedal. The car rolled forward and made contact with the vehicle in front of me, resulting in a minor accident and a cracked front headlight. Given that this has now happened twice, I am concerned about the possibility of a recurring brake system failure and am worried for my safety and the safety of others. - Brake Failure, it is available for inspection upon request - if I didn’t act quickly and pressed the emergency brake, it would have resulted in an accident. Damage to my car and damage to the car In front of me. And could have resulted in injury to myself. -I have not taken the vehicle to the dealership or service center yet as I have not driven it since the incident. However, I have scheduled an appointment for this upcoming weekend. -there were no warning lamps messages or other symptoms prior to the failure. 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

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