Service bulletins for the 1997 Audi A4
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
66 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Engine are shown. Show all
| 9804 | 1999-04-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. VEHICLE EXHIBITING A WHINING / WHIRRING TYPE NOISE AT CERTAIN MPH RANGES. *TT |
|---|---|
| 9801 | 1999-02-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. TURBOCHARGER, FAILURE DUE TO LACK OF LUBRICATION. *YC |
| 9801B | 1998-06-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. TIGHTENING TORQUE FOR OIL DRAIN PLUG. *YC |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.