Hyundai Ioniq 5 Complaints

1,350 consumer complaints on file.

#11697455November 4, 2025
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, LANE DEPARTURE: BLIND SPOT DETECTION, LANE DEPARTURE: WARNING
I suddenly received errors that my sensors weren’t working, and I can no longer use my cruise control. The car has less than 60,000 miles so it still has the full bumper to bumper warranty. I have never had a collision. So I took it in to the dealer and they said the camera was mis-aligned and is not covered under warranty. It should be covered as I’ve never had a collision. Based on my online research, many people with Hyundai Ioniq 5s have experienced this same issue at no fault of their own, so it is a systemic problem. I took the vehicle to the Pohanka Hyundai in Fredricksburg, VA
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11696880October 31, 2025
ELECTRICAL SYSTEM, ENGINE, FUEL/PROPULSION SYSTEM
Hyundai is ignoring the fact that many Ioniq 5 have an ICCU defect that happens without warning and can leave you stranded with a bricked car that you can’t drive. They have a software recall for it that I had performed at the dealer. This did not solve the problem because it failed yesterday and I was stranded far from home. They continue to put this same part in the 2025 model. I have a 2024. Brand new cars are having the same problem which requires the whole unit to be replaced with the same unit that can go bad. I know people who it has happened to multiple times. They need to issue a recall that replaces the entire unit with a redesigned one. Not the same exact part. Everyone of these cars is a ticking time bomb that can leave a person stranded.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11696701October 30, 2025
FUEL/PROPULSION SYSTEM
Traveling on Highway at 65 mph the vehicle suddenly lost speed and would not respond when my foot pressed on the acceleration pedal. I made it off the freeway to the exit. I turned the EV off and on and the car accelerated until I came to a stoplight. Again the car acceleration pedal would not respond. I put on my flashers and returned to the vehicle. I turned the car off and restarted it and was able to drive it home on side streets. I did not want to get back on the freeway. I had the car towed to the Hanlee Hilltop Hyundai in Richmond California. They performed a computer check and no error code came up except for an external charger error code. Our Ioniq 5 is charged with our wall box charger and has performed with no problem. It has worked with our Kia Niro EV also without problem. I fear there is a problem with this Electric Vehicle and do not feel safe driving it. I have initiated a buy back with Hyundai. I wanted to report the problem to this government agency in case there is a larger safety problem with this model year.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11696642October 30, 2025
ELECTRICAL SYSTEM
Iccu failure for the 3rd time
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11696624October 30, 2025
POWER TRAIN
I am submitting an update to my existing complaint regarding the ICCU safety recall on my 2022 Hyundai Ioniq 5. Since my original submission, my vehicle has been at authorized Hyundai dealerships since July 2025 and remained undiagnosed and unrepaired for over three months. During this time, I received inconsistent and misleading information from both Hyundai corporate and the dealerships regarding the status of the recall repair, as documented via emails, texts, and recorded calls. On 10/31/2025, the dealership informed me that the issue may involve a floor harness/wiring problem and it is out of warranty; however, this appears related to the ICCU safety recall, and Hyundai has not provided a firm timeline for repair. Hyundai’s delay has caused significant inconvenience, as I have been without my vehicle while continuing to make car payments and insurance payments, and arranging temporary transportation. Additionally, Hyundai and the dealerships provided multiple assurances that the vehicle was being diagnosed and repaired, which were later contradicted, reflecting misleading and deceptive practices. I request that NHTSA consider this update as part of my ongoing complaint and investigate Hyundai’s failure to provide timely and adequate recall service, as well as the misinformation surrounding this safety recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11695677October 26, 2025
ELECTRICAL SYSTEM
My ioniq 5 has had the ICCU and 12V battery replaced in April, due to ICCU failure. Since then on two separate occasions the car has drained the 12V battery while parked. Both times were shortly after driving the car, so the 12V battery should have been fully charged. I believe multiple recall campaigns have been made related to this issue, but my car still appears to exhibit the symptoms after receiving the updates. * I believe the ICCU software is faulty and is not correctly charging the 12V battery. * This fault makes the car likely to strand my family unexpectedly (a safety issue), as it affects even the newly replaced 12V battery. * I have not taken this vehicle back to the dealership since the ICCU was replaced, since the 12V battery has only drained twice since then, I feel like it is unlikely they will be able to reproduce the issue. * No warning lamps or fault codes stored in the ECU.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11695655October 26, 2025
LANE DEPARTURE: WARNING
FORWARD ATTENTION WARNING system incorrectly detects a driver's lack of attention when I drive wearing sunglasses consistently. Many times it will incorrectly detect lack of attention while not wearing sunglasses. The camera has perfect line of sight to my eyes. Turning the system off through the Driver Assistance features does not stop the problem. It drives me crazy and I'm unable to identify any solution to this problem and I have learned this is a very common problem with this year and model.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11695575October 25, 2025
ELECTRICAL SYSTEM
12 volt battery dead. Interior lights don't come on. Vehicle won't start. 1. 1/8/24: orange 12V light coming on repeatedly, meaning battery not charging. Dealer, Hyundai of Cool Springs, found battery would not hold charge. Replaced battery. Afterwards, orange light still came on sometimes, but dealer advised to ignore it. 2. NHTSA recall for ICCU software problem affecting battery charging, Hyundai Recall 257/021G. Dealer fixed problem 3/28/24, 41D043R0 .4. Afterwards, orange light still came on sometimes, but dealer advised to ignore it. 3. Hyundai recall #9B5 of 8/1/24, software problem in VCMS affecting battery charging. Dealer, Hyundai of Cool Springs, updated VCMS 40D097R0 .3 on 9/10/24 Afterwards, orange light still came on sometimes, but dealer advised to ignore it. 4. NHTSA Recall 24V-868 of 11/18/24, ICCU causing battery not to charge. Dealer, Hyundai of Cool Springs, updated VCU and ICCU, 40D229R0 .7 and 41D225R0 .4 on 1/23/25. Afterwards, orange light still came on sometimes, but dealer advised to ignore it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11695346October 23, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN
Despite being up-to-date on recalls for this vehicle intended to address failures with the integrated charging control unit (ICCU), I still experienced an ICCU failure. I was driving along a surface road at approximately 40 mph for about 9 minutes when I heard a pop that sounded like cargo shifting in the rear cargo area. The vehicle then flashed a "Check EV System" warning but otherwise continued to operate normally. About 2 minutes later, there was a warning to stop vehicle and check power supply. After I pulled into a parking lot, I restarted the vehicle, but the errors persisted. I had the vehicle towed to the dealer, where it was diagnosed as an ICCU failure. The vehicle was last charged ~15 hours before the failure on a level 2 charger at a peak rate of 6 kw. The vehicle was driven for about an hour after charging, sat overnight, before being driven when the failure occurred. The vehicle is primarily charged using level 1 and 2 charging, typically not exceeding 6.3 kw. Only a handful of times has level 2 charging rates exceeded 6.3 kw. The vehicle previously had the ICCU fail and replaced in 2023. The car is still at the dealership with no repair timeline.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11694576October 20, 2025
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
I turned on adaptive cruise control while on the highway and got an alert from the Forward Attention Warning system that I wasn't paying attention even though I was looking out at the road normally. The car eventually decided this meant I was unresponsive and initiated an automatic Emergency Stop in the middle of the highway. The only way I could get the adaptive cruise control to work as expected was to remove my glasses, which I need to see clearly and drive safely. I was able to disable the Adaptive Cruise Control and continue driving normally before the car stopped in the highway, but this seems like it could create a dangerous situation. After a bit of testing, I found that Forward Attention Warning system did not work with some pairs of my prescription glasses and some non-prescription sunglasses I use when I wear contact lenses. There does not appear to be a way to disable the Forward Attention Warning when using cruise control.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11694439October 20, 2025
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
ICCU Failure — Severe Safety Risk and Repeated Incident The ICCU in my Hyundai has failed twice. Both times, the car suddenly and completely lost power while I was driving — no warning lights, no gradual slowdown, just total loss of control. This created an extremely dangerous situation that put me, my passengers, and everyone around us at risk. When the ICCU fails, the vehicle shuts down instantly and becomes completely inoperable. During the most recent incident, I spent more than eight hours on the phone with Hyundai attempting to arrange a tow. When the tow truck finally arrived, the driver instructed me to shift the car into neutral. The moment I did, the car died again and became stuck in neutral, preventing the driver from towing it. He then left, unable to assist, leaving my disabled vehicle parked on a public road — on a hill — where it posed a further safety hazard. Hyundai’s response to these failures has been temporary at best. This issue continues to reoccur, making the vehicle effectively unsafe to drive at all times.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11694415October 19, 2025
LANE DEPARTURE: WARNING, LANE DEPARTURE: ASSIST, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
The car has a highway driving assist (HDA) system, but the system will not work when I am wearing sunglasses. It also has a lane assist system that is supposed to steer the car for you but it also fails and gives a message that the driver is not paying attention. The driver attention alert will not go away as long as I am wearing sun glasses. If I remove the sun glasses it works fine. Hyundai says I have to wear different sun glasses, but I have tried 4 kinds and none of them work with the system. They refuse to make any changes or repairs to the system.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11694208October 17, 2025
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
The lane-keeping assistance system on this vehicle is equipped with a "driver attention monitoring system" that is meant to tell if the driver has his or her attention focused off the road. The trouble is that this system is far too sensitive and prone to very loud and distracting false alarms to the point where it becomes *MUCH* more distracting than the distractions it is meant to prevent. I almost lost control of the vehicle at freeway speeds once because the system alarmed so suddenly and loudly that it startled me. This needs to be fixed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11694053October 17, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
The ICCU unit has failed after 10 days of driving of the brand new 2025 Ioniq 5. It gave me a warning that the battery has failed while I was waiting on a signal light, and the car started limiting my speed. The car continued to get slower and slower, then it says battery regeneration failed at one point. The fastest I could go at one point was 30 mph. It was dangerous as I need to make sure the cars behind me don't come at me. When going uphill, I was only able to drive in 20mph. The car was taken back to the dealership to get serviced. They confirmed that the ICCU unit and the fuse have failed and my car will need a replacement.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11693988October 16, 2025
VEHICLE SPEED CONTROL, POWER TRAIN, STEERING
NHTSA Vehicle Safety Complaint Vehicle Information: Year: 2023 Make: Hyundai Model: Ioniq 5 VIN: [XXX] Mileage: Over 137,000 miles 15 States Driven: AZ, TX, GA, CA, MI (with damage here primarily) Complaint: My 2023 Hyundai Ioniq 5 has experienced persistent and severe safety failures since delivery in January 2023, including: Complete power and control loss at highway speeds Repeated BMS/12V failures (even at 30% state of charge) Nonworking rear brake lights at night for over one year False-alarming and nonfunctional parking sensors Interior wear faster than normal; more These failures have created life-threatening hazards for me and my children, who regularly ride in the vehicle. The vehicle is under an active federal safety recall, which under 49 U.S.C. § 30118–30120 requires dealers and manufacturers to repair recalled vehicles promptly, without regard to profitability or cost. Despite repeated written requests, Pedder Hyundai (Poway, CA) refused to perform recall repairs, obstructed resolution, blocked corporate contact, and threatened to tow the vehicle illegally at my expense within 48 hours, demonstrating reckless disregard for consumer safety and federal law. A police report documenting criminal endangerment, conversion, and aggravated consumer endangerment is pending, and the lender of the vehicle has been notified of breach of contract. These issues appear systemic, affecting multiple vehicles of this model, and have resulted in: Frequent, unexpected towing with surprise expenses and downtime Significant risk of injury or death due to power/control loss Repeated failures despite warranty and recall obligations I request NHTSA investigate immediately, ensure recall repairs are completed promptly, and take any action necessary to protect public safety. Available case file including Dealer correspondence showing obstruction refusal threats to ignore California and federal law 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
#11693345October 14, 2025
AIR BAGS, ELECTRICAL SYSTEM
Airbag wire under driver seat drags on ground
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11693189October 13, 2025
FUEL/PROPULSION SYSTEM
Battery conditioning (heating) is required for fast charging at cold temperatures. The current method of enabling this function takes many steps including going into the EV setting to enable this option (since it automatically turns off when changing some settings in the Hyundai Bluelink App), then opening the navigation screen, looking at a map and scrolling though a long list of charging sites, picking the desired charger then starting the navigation and route to that site. This has to be to done while in route to a specific charger, normally this would be on the freeway 20-40 minutes before arrival at a fast charging station. It is a distraction while driving and is an issue with all Ioniq 5's sold from 2022-2024. Hyundai fixed this problem for the 2025 model year but have not do so on the previous cars at this time. Hyundai needs to add this 1 touch preconditioning option for safety and driver ease of use. I feel it should required on all EVs that offer battery conditioning. I have told them about this several times and not gotten a response and according to posts in various online communities many other have also reported this issue to Hyundai but they have taken no action.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692944October 12, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
Car won't charge on Level 1 charging; it popped the GFCI in my garage and now no longer charges on level 1 (regular slow AC charging).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692766October 11, 2025
AIR BAGS, UNKNOWN OR OTHER, ELECTRICAL SYSTEM
Ioniq 5's yellow air bag wire/harness underneath driver seat has design flaw, many other owners are noticing. In my case the cables are touching the floor, it's a hazard.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692406October 9, 2025
AIR BAGS, SEAT BELTS
The yellow airbag SRS critical safety restraint wire runs exposed and loose and drooping beneth the front seats with NO space between the harness and the floor (it could have been run above the seat plate or otherwise protected. Mine snagged on something and was torn from the terminal block and has disable the airbag. Hyundai denies it a defective design or assembly and had denied warranty coverage but wants $10,000 to enable it - $6,933 for the part - $3,000 labor. The driver seat moves back and forth automatically when entering and existing - there is no control of the movement and anything more than 1/2 high is able to become tangled and disable the airbag without warning. Hyundai via emails to their legal counsel as well as customer care is fully advised but has denied warranty status or other fix or accomadation. The warrenty for this car - for which coverage has been denied - is in full force per Hyundai's express terms. This is a critical safety issue which upon limited investagation effects numous ioniq5's of multiple years besides the 2024 limited. Note also the 2024 limited has a movable drivers seat foot rest which is prone to sweep matters under the seat when lowered.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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