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Service bulletins for the 2004 Audi S4

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.

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

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Bulletins, newest first
TSB-44-08-142009-02-21. Service bulletin. WHEELS:LUGS/NUTS/BOLTS/STUDS. AUDI: WHEEL BOLTS REQUIRE TORQUE ADJUSTMENT. TORQUE STICKS AND TORQUE EXTENSION BARS ARE NOT APPROVED BY AUDI OF AMERICA, INC. AND SHOULD NOT BE USED TO APPLY TORQUE TO WHEEL BOLTS. ALL AUDI MODELS INCLUDED. *PE
24 08 142008-05-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. MIL ON, ENGINE RUNS ROUGH AFTER HOT START (DTC P0300-P0308 IN ECM). *NJ
200365822007-07-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LOSES POWER OR WILL NOT MOVE AFTER STOP. *KB
200562432007-07-06. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. HEADLIGHT AIMING, USING HELLA UNIVERSAL BEAMSETTER. *KB
06012006-03-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. REVERSE GEAR WILL NOT ENGAGE OR IS HARD TO ENGAGE. *TT
06012006-03-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CONTROL HOUSING FOR CAMSHAFT ADJUSTER, ENSURING SHIM WASHER INSTALLATION WHEN REPAIRING. *TT
05012006-03-15. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. AFTER-RUN COOLANT PUMP -V51- MAY NOT OPERATE WHEN THE IGNITION IS SHUT OFF AND THE COOLANT TEMPERATURE IS ABOVE 112 DEGREES C. *TT
05012005-12-19. Service bulletin. ELECTRICAL SYSTEM. LIGHT SENSOR WARNING LIGHT ON INTERMITTENTLY AND CUSTOMER CONCERN ABOUT AUTOMATIC HEADLIGHT INSTRUMENT CLUSTER WARNING LIGHT ILLUMINATING FOR 1 SECOND ACCOMPANIED WITH A SHORT BEEP. *TT
04022005-12-19. Service bulletin. ENGINE AND ENGINE COOLING. OIL LEAKS FROM UPPER ENGINE AREAS, DIAGNOSTIC GUIDELINES. *TT
05052005-11-30. Service bulletin. ENGINE AND ENGINE COOLING. COOLANT LEAKAGE AROUND AUXILIARY COOLANT PUMP. COOLANT LIGHT MAY BE ILLUMINATED. *TT
05022005-05-19. Service bulletin. ENGINE AND ENGINE COOLING. FUEL INJECTORS UNNECESSARY REPLACEMENT. *EH
05012005-05-19. Service bulletin. ENGINE AND ENGINE COOLING. SECONDARY AIR INJECTION (AIR) PUMP MOTOR -V101- IS NOISY. *TT
05012005-05-19. Service bulletin. ENGINE AND ENGINE COOLING. FUEL INJECTORS UNNECESSARY REPLACEMENT. *EH
05012005-05-19. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. FUEL INJECTORS, UNNECESSARY REPLACEMENT. UPDATE. *TT
05022005-05-19. Service bulletin. ENGINE AND ENGINE COOLING. COOLING SYSTEM PERFORMANCE LOW HEATER OUTPUT. *EH
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
1905012005-03-15. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. AFTER-RUN COOLANT PUMP, ACTIVATING (IB). TO INCLUDE 2005 S4 SEDAN, AVANT. *TT
04022004-11-02. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. LIGHTSENSOR WARNING LIGHT ON INTERMITTENTLY. *TT
04022004-11-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. VALVE COVER, DIAGNOSING OIL LEAKAGE FROM GASKETS. *TT
04022004-09-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE, INTAKE MANIFOLD MOUNTING BOLT TORQUE. AUDI S4,S4 CABRIOLET, ALLROAD, A6, A8L MODEL YEAR 2004. *MJ UPDATE. *TT

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