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Service bulletins for the 2009 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.

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

By type

By component

By trouble code

Bulletins, newest first
TSB-48-10-072011-01-10. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR. AUDI: SERVOTRONIC STEERING (1N3) SHUDDER AT LOW SPEED WHILE TURNING. WHILE DRIVING AT LOW SPEEDS (BELOW 5MPH), A SHUDDER OR KNOCKING NOISE WOULD OCCUR IN STEERING WHEEL WHEN TURNED DURING PARKING LOT MANEUVERS. *PE
TSB-94-10-122011-01-10. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:SWITCH. AUDI: AUTOMATIC HEADLIGHT SWITCHES ON AND OFF WITHOUT REASON. HEADLIGHT TURNS ON OR OFF EARLY OR LATE WHEN THE LIGHT WITCH IS IN THE AUTO POSITION; AFTER REPLACING THE RAIN LIGHT SENSOR G397 OR AFTER REPLACING THE WINDSHIELD, THE AUTOMATIC HEADLIGHT MAY TURN OR OFF WITHOUT CHANGE OF AMBIENT BRIGHTNESS. HEADLIGHTS OPERATE NORMALLY IF THE LIGHT SWITCH IS IN THE ON OR OFF POSITION. *PE
TSB-94-10-102010-11-04. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. AUDI: XENON HEADLIGHT FLICKERS OR IS INOPERATIVE ON ONE SIDE (DTC 00978 OR 00979). ONLY PHILIPS BRAND XENON BULBS ARE AFFECTED. *PE
TSB-48-09-112010-08-09. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR. AUDI: SERVOTRONIC STEERING (1N3) SHUDDER AT LOW SPEED WHILE TURNING. CUSTOMERS COMPLAIN OF A SHUDDER IN THE STEERING WHEEL OR A KNOCKING NOISE WHEN THE STEERING WHEEL IS TURNED DURING PARKING LOT MANEUVERS OR WHILE DRIVING AT LOW SPEEDS (BELOW 5 MPH). *PE
TSB-24-09-282010-08-09. Service bulletin. FUEL SYSTEM, GASOLINE. AUDI: MIL ON AND ONE OR MORE OF THE FOLLOWING DTCS ARE STORED INTHE ECM DATA MEMORY-P310B (LOW PRESSURE FUEL SYSTEM REGULATION, FUEL PRESSURE OUTSIDE TOLERANCE); P129F OR P008B (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO HIGH); P129F OR P008A (LOW PRESSURE FUEL SYSTEM, PRESSURE TOO LOW); P2540 (LOW PRESSURE FUEL SYSTEM, PRESSURE OUT OF RANGE; AND P0087 (RAIL FUEL PRESSURE SYSTEM, PRESSURE TOO LOW). *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-90-09-132010-07-26. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY. AUDI: FUEL GAUGE DOES NOT REFLECT FUEL TANK IS FULL. THE FUEL GAUGE DOES NOT SHOW FULL EVEN THOUGH THE TANK IS COMPLETELY FILLED. THIS MAY OCCUR AFTER THE VEHICLE HAS BEEN TRANSPORTED BY A VEHICLE TRANSPORT TRUCK. *PE
TSB-96-09-142010-07-26. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. AUDI: FALSE WARNING BY LANE CHANGE ASSISTANT (AUDI SIDE ASSIST). SOFTWARE FAULT. OPTIMIZED SOFTWARE. REPLACEMENT OF THE CONTROL UNIT IS NOT NECESSARY. WARRANTY CLAIMS FOR CONTROL UNIT REPLACEMENTS WITHOUT USE AND APPLICATION OF THIS TSB WILL BE DEBITED. *PE
TSB-96-09-122010-07-26. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. AUDI: FALSE WARNING BY LANE CHANGE ASSISTANT (AUDI SIDE ASSIST). SOFTWARE FAULT. OPTIMIZED SOFTWARE. REPLACEMENT OF THE CONTROL UNIT IS NOT NECESSARY. WARRANTY CLAIMS FOR CONTROL UNIT REPLACEMENTS WITHOUT USE AND APPLICATION OF THIS TSB WILL BE DEBITED. *PE
TSB-21-10-012010-06-25. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. AUDI: IT IS POSSIBLE THAT THE COOLANT SUPPLY LINE AT THE TURBOCHARGER MAY LEAK ON AUDI VEHICLES WITH 2.0L TFSI ENGINES BUILT WITHIN A SPECIFIC PERIOD. *PE
TSB-21-10-022010-06-25. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. AUDI: IT IS POSSIBLE THAT THE COOLANT SUPPLY LINE AT THE TURBOCHARGER MAY LEAK ON VEHICLES WITH 2.0L TFSI ENGINES BUILT WITHIN A SPECIFIC PERIOD. *PE
TSB-01-09-042010-06-04. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY:SOLENOID. AUDI: MIL ON. DTC P0016 CRANKSHAFT POSITION, CAMSHAFT POSITION CORRELATION BANK 1 SENSOR A; DTC P0017 CRANKSHAFT POSITION, CAMSHAFT POSITION CORRELATION BANK 1 SENSOR B; DTC P0018 CRANKSHAFT POSITION, CAMSHAFT POSITION CORRELATION BANK 2 SENSOR A; DTC P0019 CRANKSHAFT POSITION, CAMSHAFT POSITION CORRELATION BANK 2 SENSOR B. *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
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
SB-57-09-072009-11-11. Service bulletin. STRUCTURE:BODY:DOOR. AUDI: ONE OR MORE DOOR HANDLE TOUCH SENSORS CANNOT BE USED TO UNLOCK THE VEHICLE DOORS; THROUGH DIAGNOSIS IT HAS BEEN DETERMINED THAT A DOOR HANDLE TOUCH SENSOR MUST BE REPLACED; OTHER WISE, THE VEHICLE LOCKS FUNCTION NORMALLY, SUCH AS WHEN USING THE REMOTE KEY OR THE INTERIOR LOCK SWITCH. *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-15-09-022009-10-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AUDI: ENGINE OIL MAY BE LEAKING FROM UPPER ENGINE AREA. DUE TO THE POROSITY OF THE CAM CARRIER CASTING, OIL CAN DRAIN INTO THE THREAD OF THE CAM BOLT AND CAUSE AN EXTERNAL ENGINE LEAK. ALL BOLTS ARE INSTALLED WITH LOCTITE. *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
TB-37-09-022009-08-05. Service bulletin. WHEELS; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). AUDI: WHEN PULLING AWAY, THE ACCELERATOR RESPONSE IS VERY PROMPT. THE DRIVING WHEELS MAY BREAK TRACTION AT MEDIUM THROTTLE APPLICATION ON LOW TRACTION SURFACES. ACCELERATION IS DELIBERATELY SPORTY. THE ENGINES ALREADY DEVELOP THEIR MAXIMUM TORQUE AT 1500 RPM. *PE
TSB-15-08-172009-06-11. Service bulletin. UNKNOWN OR OTHER. AUDI: CAMSHAFT SENSOR WHEEL MAY HAVE WRONG POSITION ON CAMSHAFT. A SLIGHT POWER REDUCTION MAY BE ASSOCIATED WITH THIS CONDITION. THIS CONDITION DOES NOT CAUSE STALLING. *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-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
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

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