Kia Niro 2020–2021 — technical service bulletin
Bulletin TSB_ELE247 · NHTSA communication 10201527 · issued Sep 15, 2021
Technical service bulletin
communication type
Electrical System
component
2020–2021
model years
5
vehicle entries
Official summary
TECHNICAL SERVICE BULLETIN: SERVICE ACTION: HCU/LDC LOGIC IMPROVEMENT FOR P-DTC (SA484) - This bulletin provides the procedure to update the software logic of the Hybrid Control Unit/Low Voltage DC/DC Converter (HCU/LDC) system on some 2020-2021MY Niro HEV (DE HEV) and Niro PHEV (DE PHEV) vehicles produced in the date ranges shown below, which may incorrectly set a Power Train Diagnostic Trouble Code (P-DTC).
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.