Hyundai Ioniq 5 Complaints (2023)

385 consumer complaints on file.

#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
#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
#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
#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
#11692395October 9, 2025
ELECTRICAL SYSTEM
The car stopped trickle charging even though it wasn't at 100%. When I turned it on, there was a warning message indicating an electrical failure. I called the dealership and they said it was unsafe to drive it the 2-3 miles to the dealership so it had to be towed. Once it was diagnosed, the dealership told me the ICCU had failed. This is a known defect in this car that for some reason has not been resolved with the previous recalls, and the replacement units that are installed are just as prone to failure as the original. It is expected that I will have the car back approximately one week after it was towed to the dealership.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692008October 8, 2025
ELECTRICAL SYSTEM
The ICCU, which is an electrical component that charges the 12 volt battery, failed. As a result the power drained completely and the car shut down. This is a safety issue because it happened while driving and my husband just barely had time to get the car over to the side of the road. It has also been know to happen to cars of this model while driving on a highway, which is obviously very dangerous. The problem has been confirmed by a dealer - Gary Rome Hyundai in Holyoke MA. They ordered us a new ICCU, which took about a month to get. Orders for the ICCU's are backed up because this problem has been happening to so many cars. And as the dealer reported, the problem has been known to happen to the same car multiple times, even after the ICCU is replaced. The vehicle was not inspected by the manufacturer, police, or insurance. It was towed to the dealership for repair. There were no warning messages until the battery started failing and it was only about a minute before the car shut down.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11687016September 12, 2025
ELECTRICAL SYSTEM, POWER TRAIN, ENGINE
Had all previous open recalls for iccu performed. No previous warning in car. Driving unto free way. Loud noise like a tire pop. 12 volt low power warning on dash screen. Car began to lose power. Picture of a turtle shows up. Low power warning. Car lost power within 10 seconds. And couldn't accelerate. Extremely dangerous. Once completely stopped the car turned off and couldn't start again. Was able to get car to turn on with jumper cables by tow truck. But couldn't get to "start" engine. Dealership says the 12 volt battery and iccu needs to be replaced. They are blaming the issue on the fact that I had an aftermarket subwoofer installed and don't want to cover under warranty. Car ran fine with said subwoofer for a year prior with no additional changes. Have used same subwoofer and amp on multiple cars with no issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11686415September 10, 2025
ELECTRICAL SYSTEM, ENGINE
The car would not start when start button was pressed. Warning on the dash said 12v battery critically low. This happened on three different occasions. After jump starting the car, everything works as normal. I am able to turn off and turn on again as expected. 12v battery was tested and seems to be fine. Even the OBD2 readings show battery as working correctly. There seems to be a software glitch that makes the car think that the 12v battery is low. The high voltage battery was charged to above 70 at least on all three occasions. Now I carry a external jumper battery to avoid this situation
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672509July 10, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
The Integrated Charge Control Unit failed despite having all related recall repairs/actions implemented. Failure occurred while pulling into a parking place after completing level 2 charging to 80%. The failure has not yet been confirmed by the dealer, but all common symptoms match this failure including hearing a pop sound from the rear of the vehicle followed by “Check Electrical System” indication and limited distance low power, low speed mode. Had this happened while driving at highway speed, the sudden loss in power and speed could have been dangerous to respond to and get off the highway safely. The vehicle is scheduled to be inspected by the dealer shortly.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11671632July 7, 2025
ELECTRICAL SYSTEM
Component or System Involved: High-voltage battery system — fault code P1AA700. The vehicle is currently located at an authorized Hyundai dealership and available for inspection upon request. Safety Risk: The vehicle became undriveable due to a potential high-voltage battery failure, posing a significant risk of electrical hazard or loss of propulsion. I was advised by the dealership not to drive or retrieve the vehicle due to safety concerns. As the sole user of the vehicle in a household with children and daily transportation needs, this created a severe disruption and risk to personal and family safety, especially if the issue had occurred while driving. Confirmation of the Problem: The issue has been confirmed by the dealership, who retrieved the fault code. However, they are unable to complete diagnosis without Hyundai Corporate’s “Techline” technician, whose response is still pending as of this report. The vehicle has been at the dealership since June 30, 2025. Inspection: The dealership has begun inspection but cannot complete diagnosis or repair until Hyundai Corporate provides guidance. The vehicle has not been inspected by police or insurance, but it is under review by Hyundai’s technical assistance team. Warning Messages or Symptoms: Yes — prior to the failure, the vehicle displayed dashboard warning messages related to the high-voltage battery system, and the drivetrain became unresponsive. These warnings appeared just before the vehicle became unsafe to operate.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11670677July 2, 2025
ELECTRICAL SYSTEM, ENGINE
When i was out driving with my little daughter, in the middle of the road, the car showed a warning of “check electric system”. The car was very slow and went into limp mode. I had to quickly park at a shoulder. Called roadside assistance, they sent a tow truck within 40 mns, the car was completley dead when they arrived. They had to send another tow truck that arrived after another 35 mns. I had to wait in the heat with my little daughter till they transferred us to the dealer , the repair for the iccu failure took 2 weeks. Now i am very scared each time i drive the car that this might happen again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669930June 28, 2025
ELECTRICAL SYSTEM
ICCU failure leading to being stranded 120 miles from home as I returned from a vacation with my family. The vehicle was working fine for half of the trip, then after we stopped for lunch, the car went into a "limp mode" max of 25 mph as I was entering the highway. I got a warning telling me to inspect my electrical system and pull over immediately. There were no warning signs. The vehicle was towed to the nearest dealer (still 110 miles from home). The dealer confirmed what happened - an iccu failure where the 12v battery was not charging - and I had the iccu replaced. This is a problem impacting many Hyundai Ioniq cars. The dealer and manufacturer was not able to tell me why it happened or what I could do to try to prevent it happening again. I have no confidence in this car
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669122June 25, 2025
ELECTRICAL SYSTEM
The Integrated Charging Control Unit of the fully electric Hyundai Ioniq5 stopped working while I was driving my son home from the Zoo. I got a warning that there was an electrical system issue and I needed to immediately stop the car. The car lost power quickly, and I was luckily able to pull over into a parking lot and await a tow truck. This is a chronic saftey issue with Ioniq 5s and needs to be addressed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11668936June 24, 2025
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
I bought this ioniq 5 pre-owned at 10,000 miles on 6/21/25. Clean carfax and no active recalls. One mile off the lot the system I received the message "12V battery voltage low. Stop safely." The car completely turned off. Could not put it in neutral. I was stranded on the road and it could have caused an accident. I got it towed near an auto shop and bought a new battery, thinking it was just a dead 12V battery. The car turned on and seemed to resolved the issue, but after 20 minutes of driving, it completely turned off again on the road. Very dangerous. I dropped it off at Platinum Hyundai of Tracy dealership and am awaiting a diagnostic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11668514June 23, 2025
UNKNOWN OR OTHER
ICCU FAILURE. Car was being parked at night and there was a pop sound towards the back. It sounded like I ran over a branch. Immediately I received a “Check electrical vehicle system” warning light. The car could not be shifted into drive. It was towed the next day to the dealership. Oddly enough I had an appointment later that week with the same dealership to address the ICCU recall but part failed before it could be addressed. The car was able to be repaired within 10 days. No loaner provided because dealership had a 20 people waitlist. I had to rent a car instead. When looking into this issue online, a 10 day turnaround time seems on the shorter end of the typical timeframe. I’ve heard stories online (see Reddit) and seen YouTube videos of people waiting months.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11667022June 15, 2025
POWER TRAIN
My vehicle displayed a Check Electrical System failure warning and experienced a complete loss of electrical power. Since it is an electric car, the car would no longer run. No light including emergencies lights worked. This happened to me in my driveway. But it happens to other owners driving down the freeway and they suddently have to pull over. Hyundai advised me to have the car towed to the dealership service center where they diagnosed an ICCU failure. This has been happening to to 2-5% of Kia and Hyundai electric cars. I was told the ICCU was on extreme backorder. I waited ~6 weeks for my car to be repaired. Note that there were two recalls for the ICCU unit previously and I performed those recalls promptly. There were no other warnings at all before the Check Electrical Systems error and sudden loss of power.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11666681June 13, 2025
ELECTRICAL SYSTEM, POWER TRAIN
The ICCU failed which prevented the car from moving. ICCU was replaced by dealer under warranty. Had to be towed from the roadway.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11666617June 12, 2025
ELECTRICAL SYSTEM
Failure of the ICCU (integrated charging control unit) resulting in loss of power of the vehicle, failure of the 12 V battery and need to replace both the 12V battery and the ICCU under warranty. All prior recalls concerning the ICCU had been applied. This is a consistent problem with this vehicle type.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11665669June 8, 2025
ELECTRICAL SYSTEM
ICCU failure. Car is held by Hyundai dealership for over 4 weeks, waiting for replacement part from Hyundai. Need car now. Recalls were announced in South Korea by Hyundai Group for the same part creating safety and reliability concerns for American owners.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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