BMW 530E 2018–2020 — technical service bulletin
Bulletin B120221 · NHTSA communication 10198900 · issued May 1, 2021
Technical service bulletin
communication type
Fuel System, Diesel
component
2018–2020
model years
4
vehicle entries
Official summary
SERVICE ACTION: INSPECTION OF THE ELECTRONIC WASTEGATE ACTUATOR CONNECTOR . Due to a software error, long charging times (10-12 hours) for the Plug-in Hybrid Electric Vehicle (PHEV) high-voltage battery may damage the internal printed circuit board and the electrical connection to the electronic wastegate actuator. A software error in the Digital Motor Electronics (DME).
Vehicles covered
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.