Hyundai Ioniq 5 Complaints

1,350 consumer complaints on file.

#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
#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
#11666613June 12, 2025
UNKNOWN OR OTHER
1. The Integrated Charging Control Unit (ICCU) and associated high-voltage harness/fuse appear to have failed. According to the dealership, both the ICCU harness and a high-voltage fuse are being replaced. The vehicle is still at the dealer for repairs and can be made available for inspection upon request. 2. While merging onto a freeway on-ramp after charging at a Tesla Supercharger in Barstow, California, the vehicle suddenly stalled, losing all propulsion power. This occurred in live traffic while attempting to accelerate, putting me at significant risk of a collision. I was forced to stop the vehicle on the on-ramp and eventually had to call a tow truck. The situation was hazardous, as there was no shoulder to safely exit the vehicle and other vehicles were traveling at high speeds. 3. Yes. The issue was confirmed by the authorized Hyundai dealership where the vehicle was towed. The dealership stated that the ICCU harness and a high-voltage fuse are being replaced under warranty. However, they have also indicated that the required parts are backordered, and no ETA has been provided. 4. The vehicle has been inspected by a Hyundai dealership technician, and Hyundai Motor America is involved in the case. It has not been inspected by police or insurance representatives. Hyundai Customer Care has acknowledged the issue and is in contact with me, but a resolution has not yet been reached. 5. Yes. Approximately 5 to 10 seconds after finishing DC fast charging at the Barstow Tesla Supercharger, the vehicle displayed a brief warning message related to the charging system. Unfortunately, the warning disappeared quickly before I could take a photo or read it in full. Immediately after, as I attempted to enter the freeway on-ramp, the vehicle stalled.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11665953June 9, 2025
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
With Adaptive Cruise control and Lane Keeping Assist on, no matter how attentive I am, within a couple minutes (give or take) I get Driver Attention warnings. These warnings are distracting and require manual intervention in traffic. I can stop them either by turning cruise control on and off, or by accelerating manually, which can be dangerous and/or inconvenient. I do sit high in the seat, as I have a long back. I wear no glasses. I have normal wide open eyes. I am keeping my hands at 10-2 orientation. I am sitting in a way that gives me clear unobstructed view of the eye tracking camera at all times. I have not had this confirmed. I understand it is a known problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11665855June 9, 2025
FUEL/PROPULSION SYSTEM
The high-voltage traction battery on my 2025 Hyundai Ioniq 5 Limited RWD failed unexpectedly around [XXX], when the vehicle had approximately 1,250 miles on it and was just over 3 months old. The car had been parked in my driveway with about 80% charge while I was away for several days. When I attempted to drive it, the vehicle would not shift out of neutral. No warning lamps or error messages were displayed before the failure. The vehicle was towed to Van Hyundai in Carrollton, TX on April 3. While loading it onto the tow truck, the 12V battery completely died, disabling the electronic parking brake and preventing the vehicle from being safely secured. After an extended wait, a Hyundai field service technician diagnosed the failure as a fault in the traction battery, requiring a complete replacement. I was told the part is currently unavailable and has no estimated arrival time. The issue has been confirmed and documented by the dealer and the field technician. This failure renders the vehicle undriveable and puts both safety and financial reliability at risk. Not only was I unable to move or secure the vehicle, but it has also been out of service for over two months with no resolution in sight. The failed component is currently in possession of the dealership and should be available for inspection upon request. 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
#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
#11665583June 8, 2025
ELECTRICAL SYSTEM
The ICCU failed while I was driving on the interstate, resulting in a loss of power. The car had to be towed. I waited 2 hours on the side of the freeway.
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
#11664301June 2, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN
Vehicle warning alarm came on with message to immediately pull over and check power supply. Towed car to dealer where ICCU and fuse were replaced. This after 1-2 recalls were completed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11663796May 29, 2025
UNKNOWN OR OTHER
I purchased this car this week. The vehicle is equipped with a safety feature called Forward Attention Warning (FAW). Its purpose is to monitor the drivers attention (eyes??) and trigger an alert when the drivers attention is distracted for a period of time. I took it for the first time on a 150 mile trip. During the trip, the FAW alarm was triggered constantly. I tried changing my head position, taking my glasses on/off, changing my hands holding the wheel, etc. Nothing seemed to matter. It is not only a nuisance, but it causes other automated functions to be disabled. I was able to partially turn it off, but it still caused misfunctioning of other auto driving functions. Its not just a nuisance, its a hazard. If it cant be fixed easily, Hyundai should at least give the operator the ability to completely disable it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11663587May 29, 2025
ELECTRICAL SYSTEM
The ICCU on my 2022 IONIQ 5 SE AWD failed during (or immediately after) using a public Level 2 ChargePoint charger.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11662933May 24, 2025
ELECTRICAL SYSTEM, POWER TRAIN
My car’s ICCU (Integrated Charging Control Unit) failed, causing the 12-volt battery to stop charging and die, leading to a loss of power to the vehicle, resulting in the vehicle being completely immobile. I was driving on a busy road when all of a sudden the car started to slow down dangerously which almost caused the cars behind me to crash into me. The car's screen said it was entering limp mode. Then the vehicle completely stopped. I was stranded far away from home. I had to call a tow truck to tow the car to the dealer. The problem was confirmed by the dealer. The dealer confirmed the ICCU and 12-v battery failed. The dealer took 3months to repair the car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11662757May 23, 2025
ELECTRICAL SYSTEM
The ICCU died, causing the car to stop working while I was in traffic. This represented danger to me and my passenger, as well as other vehicles on the road. The car is currently with the dealer awaiting a new part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11662737May 23, 2025
LANE DEPARTURE: ASSIST, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
This car has a system called Forward Attention Warning (FAW) which monitors the driver's eyes using an in-cabin infra-red camera trained on the driver. When smart cruise control and lane following assist are both activated, FAW is forced ON by the car. If FAW thinks that the driver's eyes aren't on the road, it beeps, puts alerts on the panel visible to the driver and turns off all driving assist features. The problem I'm reporting is that the FAW system is completely broken. Even though I'm looking straight forward, it says I'm not paying attention to the road, sounds loud alerts, then eventually shuts off all of my driving assistance features. I wear glasses, and sometimes sunglasses to reduce glare when driving in bright conditions, and I've tried this with my prescription sunglasses, my normal prescription glasses and even without any glasses. The system erroneously triggers in all cases. I believe that the FAW system false positives is a safety issue because: 1. The constant false alerts are very distracting, making the driver look at the panel in front of them to try to figure out what it's saying, taking their eyes off the road 2. Lane following assist is, itself, a safety feature, by disabling it due to these false positives from the FAW system, this is reducing safety in the vehicle 3. The FAW false positives will abruptly disable the smart cruise control, which is controlling the speed of the car, as well as the lane following assist, helping to keep the car in the lane. This abrupt disabling of these systems can cause the car to slow suddenly and depart from the lane if going around a curve. This can be very dangerous.
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
#11661905May 19, 2025
ELECTRICAL SYSTEM
The ICCU in my 2023 Hyundai Ioniq 5 failed unexpectedly, despite the vehicle having completed all applicable recall campaigns intended to address this issue. The failure resulted in a sudden loss of power, with multiple warning messages appearing on the dash (e.g., “Check Electric Vehicle System”) and the inability to drive or charge the vehicle. This posed a serious safety concern as the vehicle became disabled without warning. This issue is known among Ioniq 5 owners and appears to persist even after recall software updates or prior service actions. It raises concerns about the effectiveness of Hyundai’s recall remedies and the reliability of the ICCU hardware itself. The problem poses a potential safety risk due to the loss of propulsion, especially if it were to occur at highway speeds or in high-traffic environments. Requested Action: I urge NHTSA to investigate the continued failure of ICCU units post-recall and whether current recall remedies are adequate to ensure long-term safety and reliability.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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