NHTSA Complaint #11718228 — 2023 HYUNDAI IONIQ 5 FUEL/PROPULSION SYSTEM

Complaint Details

ODI Number	11718228
Vehicle	2023 HYUNDAI IONIQ 5
Component	FUEL/PROPULSION SYSTEM
Date of Incident	January 18, 2026
Date Filed	February 16, 2026
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	WI

Consumer Description

The ICCU component popped and blew seconds before I entered the on ramp for an interstate. My car immediately entered "turtle mode" and capped my speed at 10 mph. I crossed 4 lanes to get out of the turn ramp and get to a parking lot. The car alerted and stopped driving as I pulled into the lot. The car provided no warning before and has the 3 prior software recall fixes. It was unsafe for the car to suddenly stop working. 30 seconds more and I wouldn't have been able to pilot the car to a safe spot. Dealer has car and confirmed that the ICCU is blown and destroyed the 12v battery, which is less than a year old. They were willing to provide it to you. It is still at the dealership, as Hyundai national stopped shipping replacement ICCUs apparently in January.

Related Complaints for the 2023 HYUNDAI IONIQ 5

Other FUEL/PROPULSION SYSTEM Complaints

#11718906 — February 18, 2026 — The vehicle lost its ability to charge via AC power sources (level 1 and level 2), and the "Check vehicle electrical ...

#11718526 — February 17, 2026 — We had the Internal Charge Control Unit replaced due to a warranty recall a couple years ago and it failed again on D...

#11717617 — February 12, 2026 — Vehicle stopped charging and will not charge using a level 1 or level 2 charger. It will charge at a level 3 charger ...

#11715970 — February 5, 2026 — While driving, the vehicle displayed a “Check Electrical System” warning and experienced loss of propulsion power. Th...

#11715479 — February 4, 2026 — High-voltage battery system failure causing complete loss of propulsion. Vehicle entered "turtle mode" (reduced power...

Recent Complaints for the 2023 HYUNDAI IONIQ 5

#11719566 — UNKNOWN OR OTHER — February 21, 2026 — Car had its ICCU fuse blow on 2/3/26. Been at the dealer ever since.

#11719268 — ELECTRICAL SYSTEM — February 20, 2026 — My car reported an error "check electric vehicle system" and would not drive over 25 mph. I had it towed to the neare...

#11719292 — ELECTRICAL SYSTEM — February 20, 2026 — I was driving home from lunch with my wife. A "Check electrical system" alert came up, followed shortly by an urgent ...

#11719268 — ENGINE — February 20, 2026 — My car reported an error "check electric vehicle system" and would not drive over 25 mph. I had it towed to the neare...

#11719352 — UNKNOWN OR OTHER — February 20, 2026 — My car has suffered two ICCU failures despite going through all of the Hyundai recalls. Through the so far 30 months ...