BMW M3 1996–1999 — technical service bulletin
Bulletin 120299 · NHTSA communication 604633 · issued Feb 1, 1999
Technical service bulletin
communication type
Engine and Engine Cooling
component
1996–1999
model years
10
vehicle entries
Official summary
Customer may complain of engine running rough on cold start. *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.