2026 Hyundai Ioniq 5 electrical problems

Filed Nov 5, 2026 · Electrical · TX

There was a moving traffic violation of Texas Transportation Codes § 545.101 (Improper Turn) and § 545.060 (Failure to Maintain a Single Lane). I was going southbound on [XXX] and got in the [XXX] to turn right onto [XXX]. The robotaxi was in the innermost right turn lane. At this intersection, there is a very clear marking of what lanes you are allowed to turn into; the innermost turn lane is only allowed to turn into the right lane of [XXX]. However, the robotaxi turned into the middle lane, breaking Texas driving law. This was at 7:34am on Tuesday, XXX INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 19, 2026 · Electrical · 850 miles · CA

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.

Filed Oct 16, 2026 · Electrical · CA

I turned the car on and a red battery shaped light appeared on the dash while I was in Park. I quickly looked up what the light meant as this was not the first time I've had a warning light show up. According to Ontario Hyundai website, it's a serious electrical issue that requires immediate attention. I attempted to move my car into a safe place and tried to shift the car into drive and it would only go into neutral. Then I noticed that the AC was blowing hot air even though it was at 65 degrees. I attempted to turn the car off and it would not; the dash flickered a bunch of lights but would not turn off. I continued to try to get the car into drive or reverse for 20 minutes and it would not change. After about 20 minutes, I was able to shut the car off. When I restarted it, I was able to shift into drive and get to a main road. I ultimately had to call a tow truck because it was not safe to drive. **sources Ontario Hyundai and Norman Hyundai; owners manual**

Filed Oct 8, 2026 · Electrical · IL

On June 6, 2026 (mileage 2500) I went to my garage to get the car to go to an appointment. I could not start the car. A battery icon flashed, in red, on the screen behind the steering wheel. The 12V battery had drained overnight. This pattern occurred twice more -- on July 9, 2026 (mileage 3100) and again on August 29, 2026 (mileage 3600). On June 6, I called for Hyundai road assistance. The tow truck driver jump-started the car and drove it onto the tow truck. He took it to Elgin Hyundai. The mechanics were able to start the car and drive it around the block. They repeated this on the next day and declared the car fit to drive. On July 9 and August 29 the car would not start as on June 6. I left the car in the garage and drove off to my appointments in a friend's car.

Filed Aug 25, 2026 · Electrical · CA

The vehicle will not turn off. I returned it to the Dealer, Oakland Hyundai, and their service department has had the vehicle since 7/27/26. When I brought the vehicle in to service it had 2,519 miles. Service rep has advised that technicians are trying to find the faulty part and have been unsuccessful to date. A technician from another location is scheduled to see the vehicle during the week of 8/31/26. I have filed a case with Hyundai America and will send a demand for restitution on 8/28/26. I view this situation as a clear safety issue - the car will not turn off.

Filed Jul 15, 2026 · Electrical · NV

Control box on main battery (iccu)

Filed Jun 15, 2026 · Electrical · TX

An AVRIDE vehicle made a right-hand turn from a middle lane. It did not use the appropriate lane for right-hand turns.

Filed Apr 27, 2026 · Electrical · CA

My car would no longer charge after testing various chargers at home and different public charging stations. If this had happened away from home, and without cell service, I might have been stranded. I took I into the Hyundai service center, and they said the ICCU had failed. They replaced if after waiting a week for the part.

Filed Apr 24, 2026 · Electrical · CA

ICCU and fuse broken

Filed Apr 19, 2026 · Electrical, Seats · CO

Upon delivery of a brand new 2026 Hyundai Ioniq 5 with 13 miles on the odometer, the washer fluid warning illuminated the next day. Reservoir was refilled on 3/29 and was completely empty by 3/30. Vehicle was brought to the authorized dealer on 3/31. The technician confirmed via repair order that the washer fluid hose was actively spouting directly above the ICCU — Integrated Charging Control Unit — a safety-critical high voltage component. Washer fluid was confirmed present in the ICCU floor pan. The cause was a nail severing the washer fluid line. The dealer confirmed the vehicle sat on their lot approximately 70 days before the 3/23/26 delivery date and that washer fluid is factory pre-filled. This indicates the leak was active for approximately 70 days before delivery, during which washer fluid leaked above the ICCU and surrounding electronics. Repair required complete interior disassembly — seats, carpet, center console, floor trim — on a 156-mile brand new vehicle. A full floor wire harness was replaced under Hyundai Techline authorization. Soaked carpet and insulation were salvaged outside rather than replaced. Hyundai Motor America declined to proactively replace the ICCU despite documented fluid exposure above it and denied an extended warranty request covering affected electronics. Safety concern: internal corrosion from extended fluid exposure may not present immediately but can cause sudden loss of drive power — a known ICCU failure mode on this platform subject to multiple prior recalls. Loss of drive power at highway speed poses serious safety risk.