Hyundai Ioniq 5 Electrical Problems

Electrical complaints by model year

Which parts fail

• 12V/24V/48V battery
  8
• Propulsion system › Charging › Port
  2
• Integrated trailer brake control
  1
• Instrument cluster/panel
  1
• Propulsion system › Charging › Module › Accessory
  1
• Propulsion system › Charging › Cable/cord › Accessory
  1
• ADAS › Parking assist › Sensors
  1
• Propulsion system › Charging › Cable/cord › Onboard
  1

Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).

Mileage when the problem started

• Under 25k
  2366%
• 25k–50k
  617%
• 50k–75k
  39%
• 75k–100k
  13%
• 100k–150k
  26%
• 150k+
  00%

What owners report

The contact owns a 2026 Hyundai Ioniq 5. The contact stated that while charging the vehicle at the workplace, the vehicle started flashing a message "Charging was Unsuccessful". The contact was able to drive the vehicle to the residence; however, the door locks were making clicking sounds. The contact stated that the vehicle was parked in the driveway and the key fob failed to unlock or lock the doors. The contact called the local dealer, who advised her not to drive the vehicle. The vehicle was towed by the dealer to be diagnosed, and the dealer informed the contact that the Integrated Charging Control Unit (ICCU) had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 160.

The contact owns a 2026 Hyundai Ioniq 5. The contact stated that while driving at 65 MPH, the vehicle lost motive power, and a battery warning light and a "Vehicle Will Come to a Stop" warning message illuminated. The vehicle failed to restart and was towed to the contact's residence. The vehicle was towed to the dealer, where it was diagnosed with DTC P0A1F8C. The contact was informed that the Vehicle Control Management System (VCMS) experienced an internal failure and required replacement. The vehicle was repaired. The manufacturer was notified of the failure by telephone, and a case was filed. The failure mileage was approximately 850.

The contact owns a 2025 Hyundai Ioniq 5. The contact stated that after starting the vehicle, the battery warning light remained illuminated, and the vehicle failed to exceed 45 MPH while driving. The messages "Onboard Charger - Stop Vehicle" and "Power Supply" were displayed. The vehicle was later towed to the local dealer who diagnosed that the ICCU Module had failed and needed to be replaced. The vehicle was not yet repaired. The contact stated that during the failure, the electric battery had failed to recharge the 12-Volt battery as intended, which caused the failure. The manufacturer was notified of the failure and informed the contact that the vehicle was not included in NHTSA Campaign Number: 24V868000 (ELECTRICAL SYSTEM). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 8,000.

The contact leased a 2025 Hyundai Ioniq 5. The contact stated that while driving at 25 mph, the battery warning light, reduced power warning light, and an unknown warning light depicting a vehicle with an exclamation mark illuminated. Additionally, a "stop vehicle and check power supply" message appeared, and the vehicle lost power. The driver steered to the side of the road, and the vehicle was towed to a dealer. It was diagnosed that the ICCU unit and ICCU fuse were defective and needed replacement. The vehicle was repaired, and the manufacturer was notified of the failure. The failure occurred at approximately 82,069 miles.

The contact owns a 2024 Hyundai Ioniq 5. The contact stated that while his wife was driving approximately 30 MPH, the vehicle started losing motive power. The contact's wife depressed the accelerator pedal; however, the vehicle shifted to first or second gear and failed to accelerate above 20 MPH. The contact stated there were no warnings illuminated. The contact stated that his wife pulled into a parking lot and the vehicle lost electrical power and was unable to be restarted. The contact had the vehicle towed to a dealer. The dealer diagnosed the vehicle and informed the contact that the vehicle had had a failure of a part that was on a national back order. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 11,000.

On [redacted] at [redacted] Pacific Time , I was entering my garage when my vehicle had a surge of acceleration and went through thee wall seperating the garage from the kitchen. There wasn't any emergency braking , even with myself applying the brake , my vehicle refused to stop. My vehicle was totaled by Progressive Insurance .I am now furnishing the Progressive claims name and adjuster"s phone number: Grace Villard [phone]. North Las Vegas Police Dept Accident report #[redacted] It was the Progressive Insurance aduster ,vehicle inspector who called me and told me there was a safety issue with my vehicle and declared it a total loss. Whatever aid you can avail me to I'd appreciate..

Intermittent Electrical / Brake failure . Put vehicle in reverse . Brakes failed to stop vehicle . Vehicle has had electrical issues before . Waring lights came on for steering and tire pressure in the past . Recall then came from Hyundai for the ICCU .45 minutes before the collision, the front collision warning came on when I was stopped at an intersection with no one in front of me . I stopped the vehicle and turned the vehicle off . Turned on the vehicle and it reset the warning lights and sounds , and I continued to drive . Later while pulling out of a parking space in reverse ,I stepped on the brakes but the vehicle did not stop . I pumped the brakes to no avail . …

7 incidents of electrical drive problem incidents 1-3car would not start despite full battery Incident 4 same thing and car went to dealer, they said know problem and they would fix it overnight by downloading new software and charge about $400 for new 12V battery Incident 5 While on freeway using cruise control card speed varied wildly I disabled cruise control and with manual throttle same problem Incident. 6 In middle of traffic car went blank no lights or anything. I tried to restart 3 times and nothing, so I sat back and was in process of calling for tow. I did nothing and car violently accelerated and turned into steel pole. Only injury I had was bump on head that went away. …

Related recalls (6)

NHTSA investigations