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Service bulletins for the 1999 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.

73 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
05142005-11-17. Service bulletin. UNKNOWN OR OTHER. WARRANTY EXTENSION 1997-1999 MODEL YEAR. *TT
04312005-09-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REPAIRS OF OIL SLUDGE RELATED PROBLEMS. *TT
05212005-09-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. THE WARRANTY IS EXTENDED FOR SUBJECT VEHICLES TO 168,000 KM (105,000 MILES), REGARDLESS OF TIME IN SERVICE, FOR ENGINE DAMAGE RESULTING FROM A BROKEN TIMING BELT. *TT
112420042005-09-12. Service bulletin. SUSPENSION:FRONT:CONTROL ARM:LOWER ARM. SERVICE ACTION JE CAMPAIGN-CHECK/REPLACE FRONT SUSPENSION LOWER CONTROL ARMS. AUDI HAS FOUND THAT IN RARE CASES, ONE OR BOTH FRONT SUSPENSION LOWER CONTROL ARMS ON AFFECTED VEHICLES CAN EXHIBIT WEAR, EVEN THOUGH THE DAMAGE TO THE RUBBER BOOTS IS NOT OBVIOUS. *SC
04022005-08-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE OIL SPECIFICATIONS, OIL CAPACITY, OIL FILTER. TO INCLUDE AUDI 24 2006. *TT
JK2005-07-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. CUSTOMER SATISFACTION CAMPAIGN JK TO INSPECT THE TIMING BELT ON VEHICLES WITH INTERNAL ENGINE DAMAGE RESULTING FROM A BROKEN TIMING BELT. *TT
04062005-02-03. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. COOLANT LEAK AT OIL COOLER HOSES. *TT
JE2005-01-29. Service bulletin. SUSPENSION:FRONT:CONTROL ARM:LOWER ARM. CHECK/REPLACE REPLACE FRONT SUSPENSION LOWER CONTROL ARMS. *TC
04202004-11-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. WARRANTY EXTENSION COVERING CERTAIN OIL SLUDGE RELATED REPAIRS. *TT
04032004-11-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LOW ENGINE OIL PRESSURE LIGHT IS ON. AUDI CABRIOLET 2004 INCLUDED. *TT
04012004-11-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE OIL SPECIFICATIONS, OIL CAPACITY, OIL FILTER. *TT THIS BULLETIN REPLACES BULLETIN 04-01 DATED JAN. 12, 2004. 2004 CABRIOLET, AUDI INCLUDED. *TT
04022004-11-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. VALVE COVER, DIAGNOSING OIL LEAKAGE FROM GASKETS. *TT
04202004-11-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL SLUDGE - WARRANTY EXTENSION. SERVICE CIRCULAR - WARRANTY. *TT
04082004-10-19. Service bulletin. FUEL SYSTEM, OTHER. LONG TERM FUEL TRIM - SYSTEM TOO RICH. DIAGNOSTIC TROUBLE CODE P1123, P1125, P1137 AND P1139. *TT
04012004-07-21. Service bulletin. ELECTRICAL SYSTEM. THROTTLE VALVE CONTROL MODULE - J338-, WILL NOT ADAPT. *MJ
0428042004-05-27. Service bulletin. SUSPENSION:FRONT:CONTROL ARM:LOWER ARM. SERVICE ACTION TO INSPECT LOWER CONTROL ARM SEALS. *TT
0926032004-05-15. Service bulletin. STEERING:HYDRAULIC POWER ASSIST:PUMP. ZF VH RECALL OF THE ZF STEERING PUMP, SUPPLIED TO WD'S FOR REPLACEMENT OF THE AUDI A4 PASSAT P/N 8D0 145 156FX INSTEAD OF THE CORRECT ZF P/N 7691 955 276ZW. 2004 AUDI A4 ALSO INCLUDED. *TT
9001042002-02-05. Service bulletin. ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH. SUBJECT REGARDING INSTRUMENT CLUSTER, DRIVER'S INFORMATION DISPLAY FADES. *JG
9001022002-02-05. Service bulletin. ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH. SUBJECT REGARDING INSTRUMENT CLUSTER, DRIVER'S INFORMATION DISPLAY FADES. *JG
1501022001-09-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. A CONDITION MAY EXIST WHERE THE ENGINE CRANKS BUT WILL NOT START. *TT
112001-09-25. Service bulletin. ELECTRICAL SYSTEM. THIS TECHNICAL REPAIR MANUAL CONTAINS THE ELECTRICAL WIRING DIAGRAMS, TROUBLESHOOTING AND COMPLENT LOCATIONS. *TT
1501012001-07-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. A CONDITION MAY EXIST WHERE THE ENGINE MAY CRANK BUT WILL NOT START. *TT
99041999-11-10. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. VEHICLES MAY EXPERIENCE WIND NOISE HEARD FROM THE EXTERIOR REARVIEW MIRROR. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.