Kia Niro 2023–2024 — technical service bulletin
Bulletin TSB_ELE318 · NHTSA communication 10245264 · issued Nov 8, 2023
Technical service bulletin
communication type
Electrical System
component
2023–2024
model years
4
vehicle entries
Official summary
TECHNICAL SERVICE BULLETIN: SERVICE ACTION: BMS SOFTWARE LOGIC IMPROVEMENT FOR DTC P1BB2 (SA553) - This bulletin provides information to upgrade the Battery Management System (BMS) software logic on certain 2023-2024MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through February 6, 2023, and 2023-2024MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to October 28, 2023, which may exhibit a â  Check Hybrid Systemâ  message displayed on the instrument cluster with DTC P1BB2 stored. This condition may occur when the vehicle is exposed to high heat/hot weather en
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.