Audi A4 1998 — technical service bulletin
Bulletin 9803 · NHTSA communication 603331 · issued Aug 27, 1998
Technical service bulletin
communication type
Visibility
component
1998
model years
2
vehicle entries
Official summary
Experiencing creaking / popping noises from rear window. *yc
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.