Certain IONIQ 5 (NEA EV) vehicles may experience Malfunction Indicator Lamp (MIL) illumination and false...
Hyundai technical service bulletin 26-01-082H TSB for 2025-2027 Hyundai Ioniq 5.
- Bulletin number
- 26-01-082H TSB (LA42)
- Component
- Electrical system
- Summary
- Certain IONIQ 5 (NEA EV) vehicles may experience Malfunction Indicator Lamp (MIL) illumination and false battery overtemperature fault diagnosis caused by water ingress into the high voltage battery system. This condition may cause unnecessary fail-safe activation, potentially resulting in reduced vehicle performance or limited vehicle operation if the vehicle is continually driven. This bulletin provides the service procedure to update the Battery Management System (BMS) software to optimize the fail-safe activation logic to prevent false activation. Additionally, diagnostic criteria for DTC P1AD300 “Hybrid/EV Battery Abnormal Performance: MISD” has also been improved to enhance diagnostic accuracy.
Owners of these vehicles have filed 242 complaints in the electrical category.
Vehicles covered
- Hyundai Ioniq 5 2025-2027 202520262027
VIN decoder
See the problems and recalls for an exact car
Buying a used Hyundai Ioniq 5?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history