BMW 528I 1997 — technical service bulletin
Bulletin MSG0149 · NHTSA communication 50899 · issued Oct 4, 1996
Technical service bulletin
communication type
Exterior Lighting
component
1997
model years
4
vehicle entries
Official summary
Vehicles may have a problem with the dimmer circuit - vehicles released from the vpcs starting 10-04-96 have disabled dimmer switches. *tw
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.