Audi A4 2003–2004 — technical service bulletin
Bulletin 0401 · NHTSA communication 10009882 · issued Aug 5, 2004
Technical service bulletin
communication type
Electrical System
component
2003–2004
model years
2
vehicle entries
Official summary
Tiptronic switch f189, printed circuit board failure. Selector lever indicator (prndl) light fully illuminated; tiptronic feature does not function; 18152 tiptronic switch (f189) short circuit to ground. *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.