2025 Hyundai IONIQ 6 electrical system problems
19 owner complaints filed with NHTSA name the electrical system on the 2025 Hyundai IONIQ 6 — 58% of all complaints for this model year.
What owners report
“"While driving a 2025 Hyundai Ioniq 6 at approximately 10,000 miles, the vehicle experienced a sudden, catastrophic Integrated Charging Control Unit (ICCU) failure with no advance warning. The vehicle instantly experienced a total electrical shutdown while the car was on the ramp. The failure…”
filed Jun 10, 2026
“The contact owns a 2025 Hyundai Ioniq 6. The contact stated that while reversing out of the garage, the vehicle suddenly stalled, with the message "12-Volt System Deactivated" displayed. The vehicle was towed to the local dealer, where it was diagnosed and determined that the computer control…”
filed May 1, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Charging port door panel may detachCampaign 25V606000 · Sep 11, 2025
- Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-volt…Campaign 24V868000 · Nov 18, 2024
Related service bulletins
Certain 2022 – 2024 model year IONIQ 5, 2024 model year IONIQ 5 Robotaxi, and 2023 – 2025 model year IONIQ 6 vehicles may require a replacement of the Integrated Charging Control Unit (ICCU) and ICCU Fuse. At Hyundai…
Z14 OL · Warranty Program/Extension · issued Jun 25, 2026This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and…
26-GI-002H TSB · Service Bulletin/Repair Instructions · issued May 27, 2026Hyundai is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years/180,000 miles from the date of original retail delivery or date of first use (whichever occurs first)…
26-EV-004H DCS · Warranty Program/Extension · issued May 14, 2026Hyundai is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years/180,000 miles from the date of original retail delivery or date of first use (whichever occurs first)…
26-EV-004H DN · Warranty Program/Extension · issued May 13, 2026Hyundai is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years/180,000 miles from the date of original retail delivery or date of first use (whichever occurs first)…
26-EV-004H TSB · Warranty Program/Extension · issued May 12, 2026
Electrical System problems in other IONIQ 6 years
| Year | Reports | Share |
|---|---|---|
| 2024 IONIQ 6 | 21 | 57% |
| 2023 IONIQ 6 | 33 | 59% |
Other reported problem areas on the 2025 Hyundai IONIQ 6
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.