BMW 320I 2011–2013 — technical service bulletin
Bulletin 270212 · NHTSA communication 10150371 · issued Dec 1, 2012
Technical service bulletin
communication type
Lane Departure
component
2011–2013
model years
6
vehicle entries
Official summary
"DSC Warning Light Is On. The warning lamps for DSC, ABS and brake warning are illuminated. There may also be a warning in the control display for ""Chassis Control System failure."" One or more of the following fault codes are stored: DSC: ??D36D44 - Signal error longitudinal torque distribution (LMV) ??48097D - Transfer Case clutch position open CAUSE Software calibration error in the LMV"
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.