Service bulletins for the 1998 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.
85 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| 9801 | 1999-02-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. TURBOCHARGER, FAILURE DUE TO LACK OF LUBRICATION. *YC |
|---|---|
| 980198 | 1998-08-28. Service bulletin. UNKNOWN OR OTHER. INCREASING DISTANCE RANGE FOR FOLDING KEY ( KEYLESS REMOTE TRANSMITTER ). *YC |
| 980298 | 1998-08-28. Service bulletin. SUSPENSION:REAR. EXPERIENCING KNOCKING/CREAKING NOISES FROM REAR AXLE. *YC |
| 980698 | 1998-08-28. Service bulletin. AIR BAGS. SUBJECT ON AIRBAG SYSTEM ON BOARD DIAGNOSTIC (OBD) FOR VEHICLES WITH REAR SEAT BELT TENSIONERS. *YC |
| A9810 | 1998-08-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; UNKNOWN OR OTHER. SUBJECT ON THE AUDI A4 REPAIR MANUAL. *YC |
| 980591 | 1998-06-25. Service bulletin. EQUIPMENT:ELECTRICAL. INSTALLATION INSTRUCTIONS FOR CELLULAR TELEPHONE. *YC |
| 980291 | 1998-06-12. Service bulletin. UNKNOWN OR OTHER. VEHICLES WITH CONCERT RADIO WITHOUT BOSE SOUND SYSTEM MAY EXHIBIT AN INOPERATIVE AND / OR DISTORTED REAR SPEAKER. *YC |
| 9801T | 1998-06-09. Service bulletin. STRUCTURE:BODY. INFORMATION ON SERVICING SUNROOF. *YC |
| 970398 | 1998-05-18. Service bulletin. EQUIPMENT:ELECTRICAL. INSTALLATION INSTRUCTIONS ON CELLULAR TELEPHONE. *YC |
| 9706249701F | 1998-03-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SUBJECT ON CYLINDER HEAD REMOVAL AND INSTALLATION. *YC |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.