Hyundai Kona Electric 2019–2021 — technical service bulletin
Bulletin 21-01-019H · NHTSA communication 10190032 · issued Mar 17, 2021
Technical service bulletin
communication type
Electrical System
component
2019–2021
model years
3
vehicle entries
Official summary
This bulletin provides information related to the VCULDC(Vehicle Control Unit & Low DCDC Converter) software update for KONA Electric(OS EV) vehicles. This update is also part of the high voltage battery monitoring logic improvement by optimizing software of each system.
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.