BMW 335D 2009–2013 — technical service bulletin
Bulletin B121418 · NHTSA communication 10138381 · issued Apr 1, 2018
Technical service bulletin
communication type
Electrical System
component
2009–2013
model years
8
vehicle entries
Official summary
INDIVIDUAL DRIVING CYCLES FOR OBD2 READINESS CODES (M57Y): One or more OBD readiness codes are not set to ÒreadyÓ during a state emissions inspection, with a hand-held scan tool or during an ISTA/D diagnostic session.
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.