BMW 320I 2012–2014 — technical service bulletin
Bulletin 122412 · NHTSA communication 10149299 · issued Jan 1, 2013
Technical service bulletin
communication type
Engine
component
2012–2014
model years
11
vehicle entries
Official summary
N20 and N26 Engine: DME FC CDA904 FA CAN Message State Trailer 0x2E4 Is Missing.
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.