BMW 335D 2009–2013 — technical service bulletin
Bulletin B180217 · NHTSA communication 10136718 · issued Dec 1, 2017
Technical service bulletin
communication type
Engine and Engine Cooling
component
2009–2013
model years
8
vehicle entries
Official summary
Diagnosing selective catalyst reduction (scr) efficiency faults: the service engine soon light is on.
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.