2025 Hyundai IONIQ 5 electrical system problems

What owners report

• “Full electrical power system failure. Heard a loud pop noise emanating from under the rear seats of the car. The power. Failure lights came on and the car lost power. We were able to get the car to slowly drive back to the garage where it completely shut down and was inoperable from that point on…”

  filed Sep 8, 2026

• “On 8/30 my vehicle experienced a power loss on a highway (reported here separately). I took the car to the dealership and they could not replicate the error and gave the vehicle back to me on 9/4. Later that day I had to drive 2 hours north to a wedding in the mountains. At 9:30pm my vehicle…”

  filed Sep 8, 2026

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

Related recalls

• High voltage battery system may contain an improperly tightened bus bar, which can cause…
  Campaign 26V068000 · Feb 5, 2026
• High voltage battery system may contain an improperly tightened bus bar, which can cause…
  Campaign 25V482000 · Jul 23, 2025

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, 2026

• This 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, 2026

• Certain IONIQ 5 (NEA EV) vehicles may have 12V battery drainage due to the scheduled climate feature. Technical Service Bulletin (TSB) 26-01-046H provides instructions to perform a software update for the Vehicle…

  26-01-046H DCS · Warranty Program/Extension · issued May 16, 2026

• Certain IONIQ 5 (NEA EV) vehicles may have 12V battery drainage due to the scheduled climate feature. This bulletin provides instructions to perform a software update for the Vehicle Control Unit (VCU) to improve the…

  26-01-046H TSB · Warranty Program/Extension · issued May 15, 2026

• Some IONIQ 5 (NEA EV) vehicles may exhibit a no START/READY condition when pressing the START/STOP Button (SSB). This bulletin provides the procedure to inspect for the START/READY condition, and if needed, replace the…

  26-BE-009H · Service Bulletin/Repair Instructions · issued Apr 18, 2026

Electrical System problems in other IONIQ 5 years

Other reported problem areas on the 2025 Hyundai IONIQ 5