BMW 1 Series M 2012–2018 — technical service bulletin
Bulletin B610818 · NHTSA communication 10143560 · issued May 1, 2018
Technical service bulletin
communication type
Electrical System
component
2012–2018
model years
10
vehicle entries
Official summary
SME FCS 21F156 21F1F7: The following codes are saved in the battery management electronics (SME) fault memory:
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.