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Service bulletins for the 2002 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.

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

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By component

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Bulletins, newest first
05022005-05-19. Service bulletin. ENGINE AND ENGINE COOLING. FUEL INJECTORS UNNECESSARY REPLACEMENT. *EH
05012005-05-19. Service bulletin. ENGINE AND ENGINE COOLING. FUEL INJECTORS UNNECESSARY REPLACEMENT. *EH
05032005-05-19. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. COOLANT LEAK OR ON HEAT IN PASSENGER COMPARTMENT. *EH
05012005-05-19. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. FUEL INJECTORS, UNNECESSARY REPLACEMENT. UPDATE. *TT
4805012005-03-15. Service bulletin. STEERING:HYDRAULIC POWER ASSIST SYSTEM. POWER STEERING, NOISY. TO INCLUDE 2006 MODELS. *TT
2405012005-03-15. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. FUEL INJECTORS, UNNECESSARY REPLACEMENT. *TT
04062005-02-03. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. COOLANT LEAK AT OIL COOLER HOSES. *TT
3704022005-01-27. Service bulletin. POWER TRAIN. TRANSMISSION SHUDDERS PRIOR TO COMING TO A STOP. *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
04012004-10-19. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. MAP CONTROLLED ENGINE COOLING THERMOSTAT, SERVICING. AUDI A4 2002-2005 AND AUDI CABRIOLET 2003-2005. *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
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
03102003-12-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). UPDATE PROGRAMMING (FLASHING) TRANSMISSION CONTROL MODULE (TCM). 2002 CABRIOLET INCLUDED. *TT
03092003-11-07. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). UPDATE PROGRAMMING (FLASHING) TRANSMISSION CONTROL MODULE (TCM). *TT
03022003-06-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. UPDATE PROGRAMMING (FLASHING) ENGINE CONTROL MODULE (ECM) TO CORRECT COLD START MISFIRE. *TT
02012003-03-25. Service bulletin. ELECTRICAL SYSTEM. DOOR ELECTRICAL COMPONENTS, MALFUNCTIONING. *TT
02072003-03-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. DIAGNOSIS OF DRIVEABILITY COMPLAINTS SUCH AS ROUGH IDLING, HESITATION, LACK OF POWER AND MULTIPLE MISFIRES OR DIAGNOSTIC TROUBLE CODES P0103, P1111, P1112, P1128, P1130, P1144, P1145, P1146, P1147, P1148 OR P1557 ON TURBO CHARGED ENGINES. *TT
9001032002-02-05. Service bulletin. ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH. INSTRUMENT CLUSTER, TRANSPORT MODE DEAXCTIVATING AT PERFECT DELIVERY INSPECTION (PDI). *JG
6801012002-02-05. Service bulletin. STRUCTURE:BODY. GLOVE COMPARTMENT, LUBRICATING LATCHING ARMS AT PERFECT DELEIVERY INSPECTION (PDI). *JG
01062001-12-19. Service bulletin. UNKNOWN OR OTHER. THE UNDERBODY CLOSE-OUT COVER, INSTALLING AT PRE-DELIVERY INSPECTION (PDI). *JG

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