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Service bulletins for the 2008 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.

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

By type

By component

By trouble code

Bulletins, newest first
TSB-24-10-022010-11-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; FUEL SYSTEM, OTHER. AUDI: MIL ON AND ONE OR MORE OF THE FOLLOWING DTCS ARE STORED IN THE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129E OR P008A (LOW PRESSURE SYSTEM, PRESSURE TOO LOW); P2540 (LOW PRESSURE FUEL SYSTEM, PRESSURE OUT OF RANGE); P0087 (RAIL FUEL PRESSURE SYSTEM, PRESSURE TOO LOW). MODELS A3,4,6,8, S6,8, RS4, Q7, AND TT (2005-2008). *PE
TSB-94-09-312010-08-09. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. AUDI: XENON HEADLIGHT FLICKERS OR IS INOPERATIVE ON ONE SIDE (DTC 00978 OR 00979). XENON ON ONE SIDE FLICKERS OR IS INOPERATIVE INTERMITTENTLY OR PERMANENTLY); XENON BULBS WERE MANUFACTURED BY PHILIPS; DTC 00979 (RIGHT LOW BEAM HEADLIGHT M31 ELECTRICAL FAULT IN CIRCUIT); DTC 00978 (LEFT LOW BEAM HEADLIGHT M29 ELECTRICAL FAULT IN CIRCUIT). *PE
TSB-17-09-162010-08-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AUDI: ENGINE STALLS OR IDLES ERRATICALLY IMMEDIATELY AFTER COLD START IN EXTREMELY COLD WEATHER (BELOW 20%F). *PE
TSB-24-10-012010-06-25. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. AUDI: DUE TO FUEL INTRUSION INTO THE LOW PRESSURE SYSTEM FUEL PRESSURE SENSOR (G410), A FALSE SIGNAL MAY BE SENT TO THE CONTROLLER, RESULTING IN A READING THAT IS OUT OF TOLERANCE. COMPARING MEASURE VALUE BLOCK 103 WITH 106 IS NOT AN ACCURATE METHOD TO DIAGNOSE LOW SIDE FUEL PRESSURE SENSOR G410. *PE
TSB-01-09-062010-03-01. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. AUDI: SOFTWARE VERSION MANAGEMENT (SVM), OPERATING INSTRUCTIONS. SVM IS A PROCESS TO UPDATE THE PROGRAMMING IN FLASHABLE (RE-PROGRAMMABLE) CONTROL MODULES AND/OR TO DOCUMENT CHANGES IN SOFTWARE LEVELS IN AUDI VEHICLES. THIS SYSTEM USES THE VAS 5051B OR VAS 5052 DIAGNOSTIC TOOLS TO SEND VEHICLE SPECIFIC DATA TO THE SVM DATABASE, TO DOWNLOAD INSTRUCTIONS FROM THE SVM DATABASE, AND TO FLASH CONTROL UNITS FOR IDENTIFIED SOFTWARE UPDATES. *PE
TSB-94-07-182010-02-25. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:SWITCH. AUDI: AUTOMATIC HEADLIGHT SWITCHES ON AND OFF WITHOUT REASON. AUTOMATIC HEADLIGHT SWITCHES ON TOO EARLY OR TOO LATE, SWITCHES OFF TOO LATE OR COMES ON TOO LATE WHEN THE SUN SHINES BRIGHTLY. AFTER REPLACING THE RAIN LIGHT SENSOR OR AFTER REPLACING THE WINDSHIELD, THE AUTOMATIC HEADLIGHT SWITCHES ON AND OFF WITHOUT REASON. HEADLIGHT CAN STILL BE OPERATED MANUALLY. POSSIBLE CAUSES COULD BE WINDOW DAMAGED/DIRTY IN SENSOR AREA; WHEN WINDOW WAS REPAIRED THE SENSOR WAS FITTED WITHOUT ADHESIVE PAD; AND SENSOR CODE FOR WINDOW IS WRONG; WRONG WINDSHIELD WAS INSTALLED; OR WIRING (PLUG/CONTACT LOOSE) DAMAGED. *PE
SB-94-09-202010-02-17. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH. AUDI: THERE ARE TWO SEPARATE CONDITIONS THAT BOTH OCCUR IN VEHICLES WITH BI-XENON, WITH OR WITHOUT ADAPTIVE LIGHTING (AFS). ONE XENON LIGHT ON EITHER SIDE SPORADICALLY FLICKERS OR FLASHES AND GOES OUT. ONE XENON LIGHT ON ONE SIDE FAILS PERMANENTLY. *PE
TSB-94-09-122009-10-31. Service bulletin. EXTERIOR LIGHTING; EXTERIOR LIGHTING:HEADLIGHTS. AUDI: HEADLIGHT, LOW BEAM MAY NOT WORK. THERE ARE TWO SEPARATE CONDITIONS THAT BOTH OCCUR IN VEHICLES WITH BI XENON, WITH OR WITHOUT ADAPTIVE LIGHTING(AFS). ONE XENON LIGHT ON EITHER SIDE SPORADICALLY FLICKERS OR FLASHES AND GOES OUT. ONE XENON LIGHT ON ONE SIDE FAILS PERMANENTLY. *PE
TSB-28-09-052009-10-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AUDI: MIL ON, ENGINE SPEED SENSOR SPACER NOT REQUIRED (DTC P0300, P0335, P0336, P0321, P0322). MULTIPLE MISFIRES DETECTED ON ONE OR MORE CYLINDERS; MALFUNCTION INDICATOR LIGHT (MIL) MAY BE ON OR FLASHING. *PE
KM-13792009-10-23. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP; ELECTRICAL SYSTEM:WIRING; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. AUDI: MIL LIGHT ON AND DTC P2294 (FUEL PRESSURE REGULATOR 2 CONTROL CIRCUIT), P2295 (FUEL PRESSURE REGULATOR 2 CONTROL CIRCUIT LOW), P2296 (FUEL PRESSURE REGULATOR 2 CONTROL CIRCUIT HIGH) IN FAULT MEMORY DRIVABILITY IS NOT AFFECTED. WIRING HARNESS TO HIGH PRESSURE PUMP MIGHT BE STRESSED AND TIGHTLY BENT AT THE PUMP CONNECTOR. THE HARNESS ALSO MIGHT BE BENT AROUND SHARP EDGES OF CYLINDER HEAD. NO MODELS LISTED. *PE
TSB-94-09-142009-10-23. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH; EXTERIOR LIGHTING:HEADLIGHTS. AUDI: THERE ARE TWO SEPARATE CONDITIONS THAT BOTH OCCUR IN VEHICLES WITH BI-XENON, WITH OR WITHOUT ADAPTIVE LIGHTING (AFS): ONE XENON LIGHT ON EITHER SIDE SPORADICALLY FLICKERS OR FLASHES AND GOES OUT. WHEN HEADLAMPS ARE TURNED OFF AND ON AGAIN OR AT IGNITION CYCLE, THE HEADLAMPS MAY FUNCTION PROPERLY OR EXHIBIT THE SAME BEHAVIOR; ONE XENON LIGHT ON ONE SIDE FAILS PERMANENTLY. *PE
B-23D6-C22009-09-28. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. AUDI: SOFTWARE UPDATE TO SUSPENSION CONTROL AND ADD SUNROOF TORX TOOL. *PE
TSB-24-08-762009-06-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. AUDI: MIL ON. MAY BE SLIGHT POWER REDUCTION AT HIGH RPMS. THIS CONDITION DOES NOT CAUSE STALLING. VACUUM LINE CRACKS. *PE
TSB-01-08-332009-05-28. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. AUDI: SOFTWARE VERSION MANAGEMENT(SVM) OPERATING INSTRUCTIONS. ITS A PROCESS TO UPDATE THE PROGRAMMING IN FLASHABLE (REPROGRAMMABLE) CONTROL MODULES AND/OR TO DOCUMENT CHANGES IN SOFTWARE LEVELS IN ALL AUDI VEHICLES. *PE
TSB-01-08-042009-03-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AUDI: 01 MIL ON, ENGINE SPORADICALLY RUNS ROUGH. THIS CONDITION WILL NOT CAUSE STALLING. *PE
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
24-08-112008-09-29. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. AUDI: DUE TO FUEL INTRUSION INTO THE LOW-PRESSURE SYSTEM FUEL PRESSURE SENSOR (G410), A FALSE SIGNAL MAY BE SENT TO THE CONTROLLER RESULTING IN A READING THAT IS OUT OF TOLERANCE. *PE
94-08-112008-09-19. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. AUDI: HEADLIGHT VIBRATION, A4 AND A4 CABRIOLET. UNDER CERTAIN OPERATING CONDITIONS, SUCH AS AT IDLE, VIBRATIONS OR RESONANCES IN THE FRONT OF THE VEHICLE CAN CAUSE THE HEADLIGHTS TO VIBRARTE. *PE
2012749-22008-09-03. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:CONCEALMENT DEVICES; EXTERIOR LIGHTING:HAZARD FLASHING WARNING LIGHTS; EXTERIOR LIGHTING:HEADLIGHTS; EXTERIOR LIGHTING:BACK UP LIGHTS; EXTERIOR LIGHTING:FOG LIGHTS; EXTERIOR LIGHTING:TAIL LIGHTS; EXTERIOR LIGHTING:BRAKE LIGHTS. EXTERIOR LIGHTS, MOSITURE ACCUMULATION. *PE
94-07-082008-08-27. Service bulletin. EXTERIOR LIGHTING. THE BULB WARNING FOR THE DAYTIME RUNNING LIGHTS IN THE INSTRUMENT CLUSTER. *PE
2408122008-07-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MIL ON (DTC P310B AND/OR P129F) AND ONE OR MORE OF THE FOLLOWING DTCS ARE STORED IN THE ECM DATA MEMORY. *PE
28 08 042008-05-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MIL ON, ENGINE SPEED SENSOR SPACER NOT REQUIRED (DTC P0300, P0335, P0336, P0321, P0322). *NJ
24 08 112008-05-08. Service bulletin. FUEL SYSTEM, GASOLINE. MIL ON (DTC P310B, P129F, P2293, P0087). *NJ
07182008-02-21. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:SWITCH. AUTOMATIC HEADLIGHT SWITCHES ON AND OFF WITHOUT REASON. *NJ
9407072007-08-15. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. AT AN IDLE, VIBRATIONS OR RESONANCE IN THE FRONT OF THE VEHICLE CAN CAUSE THE HEADLIGHTS TO VIBRATE. *KB

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