BMW i3 2014–2015 — technical service bulletin
Bulletin B610216 · NHTSA communication 10151181 · issued Mar 1, 2016
Technical service bulletin
communication type
Electrical System
component
2014–2015
model years
4
vehicle entries
Official summary
CSC Communication Errors. The vehicle cannot be put into drive readiness or the high voltage system could automatically deactivate during driving. Failure of communication on the CAN bus due to one or more faulty cell supervision circuits (CSC). As a result, the switch contactor in the high-voltage battery opens.
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.