BMW 320I 2012–2017 — technical service bulletin
Bulletin B612517 · NHTSA communication 10149255 · issued May 1, 2017
Technical service bulletin
communication type
Electrical System
component
2012–2017
model years
24
vehicle entries
Official summary
SME - HV BATTERY CELL MODULE VOLTAGE FAULTS. When diagnosing with ISTA or ISTA Next, a fault code (detailed below), regarding the cell voltage measurement, is entered in the battery management electronics (SME). ? 21F0C2 - High-voltage battery, cell supervision circuit 1: Voltage measurement (battery cell), line disconnection ? 21F0C3 - High-voltage battery, cell supervision circuit 2: Voltage measurement (battery cell), line disconnection ? 21F0C4 - High-voltage battery, cell supervision circuit 3: Voltage measurement (battery cell), line disconnection ? 21F0C5 - High-voltage battery, cell su
Vehicles covered
- 2013 BMW 320I
- 2014 BMW 320I
- 2015 BMW 320I
- 2016 BMW 320I
- 2017 BMW 320I
- 2014 BMW 328D
- 2015 BMW 328D
- 2016 BMW 328D
- 2017 BMW 328D
- 2012 BMW 328I
- 2013 BMW 328I
- 2014 BMW 328I
- 2015 BMW 328I
- 2016 BMW 328I
- 2016 BMW 330E
- 2017 BMW 330E
- 2017 BMW 330I
- 2012 BMW 335I
- 2013 BMW 335I
- 2014 BMW 335I
- 2015 BMW 335I
- 2016 BMW 335I
- 2016 BMW 340I
- 2017 BMW 340I
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.