BMW Z4 2003 — technical service bulletin
Bulletin 121003 · NHTSA communication 10004530 · issued Oct 1, 2003
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003
model years
1
vehicle entries
Official summary
Due to the absence of a readiness code, the self-diagnosis of the tank venting valve (tev) is not being completed successfully. This service action reprograms the dme for tank venting valve operation. *tt
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.