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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.

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By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
A001463 2033576-2017-11-08. Service bulletin. ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Supersedes Technical Service Bulletin Group 00 number 13-49 dated May 14, 2013. Although the correct amount of oil was added to the engine during an oil change service, a check of the oil level shows that the oil level is not okay. When an unapproved aftermarket speed-filling device is used to add oil to the engine, the increased oil flow rate may force oil into the intake manifold or combustion chamber, creating the potential for engine damage.
A191450 2025303-2017-11-08. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 19 number 13-41 dated June 20, 2013. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service available) has been introduced in MY 2005 for all engines. G13 has been introduced in MY 2008 as factory filling and service.
A011463 2033630-2017-11-08. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 01 number 13-86 dated April 15, 2013. The MIL is on. There is a rough idle. DTCs are stored in the ECM. Engine may have reduced performance without significant loss of power or stalling. Because there are a number of different misfire faults (unrelated to ignition coil operation) that could cause the MIL to illuminate, proper Guided Fault Finding (GFF) misfire diagnosis must be followed before any ignition coils are replaced.
A011457 2015106-2017-11-08. Service bulletin. ENGINE. Supersedes Technical Service Bulletin Group 24 number 11-06 dated December 7, 2011. The MIL is on. DTCs are stored in the ECM. 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 Measured Value Block 103 with 106 is not an accurate method for diagnosing G410. In order to diagnose G410 accurately, use a mechanical gauge and compare results with the low-side fuel pressure Actual Value in Measured Value Block 103.
Reference-Oil Ca2017-11-03. Service bulletin. ENGINE; EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This document contains the Audi oil capacity chart.
A101310 2018288-2017-10-31. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 10 number 10-02 dated September 14, 2010. Prior to engine replacement, any debris lodged in transferred assemblies must be removed. If the vehicle's engine experienced a serious mechanical problem, it is possible that small pieces of metal debris resulting from the mechanical problem may have become deposited in the intake manifold, air intake hoses, exhaust manifolds, exhaust down-pipes, turbocharger, supercharger, and/or intercooler. If these pieces are not removed prior to the installation and operation of the replacement engine, the pieces may be drawn into the combustion chamber, which can cause a knocking noise and subsequent serious engine damage.
A171563 2038129-2017-10-27. Service bulletin. ENGINE. Supersedes Technical Service Bulletin Group 17 number 14-53 dated November 7, 2014. A check with the engine oil service dipstick T40178 is necessary, but the adjustment values for the dipstick are not available in the Elsa repair manual. Because of a system change, the adjustment values for the service dipstick T40178 were removed from the repair manual.
A011507 2028344-2017-10-25. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 01 number 13-69 dated February 14, 2013. Noises and inconsistent engine operation after cold start during the catalyst heating phase. The customer may misinterpret these symptoms as engine misfiring. This bulletin applies only to non-diesel engines.
A171557 2010043-2017-10-21. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 17 number 13-35 dated January 9, 2013. This bulletin lists engine oils that meet Audi oil quality standards (VW 501 01, 502 00, 505 00, 505 01, and 504 00/507 00).
A101511 2018288-2017-10-21. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 10 number 13-10 dated September 5, 2013. Prior to engine replacement, any debris lodged in transferred assemblies must be removed. If the engine experienced a serious mechanical problem, it is possible that small pieces of metal debris resulting from the mechanical problem may have become deposited in the intake manifold, air intake hoses, exhaust manifolds, exhaust down-pipes, turbocharger, supercharger, and/or intercooler. If these metal debris pieces are not removed prior to the installation and operation of the replacement engine, they could be drawn into the combustion chamber, which can cause a knocking noise and subsequent serious engine damage.
A151631 2045732_2017-02-09. Service bulletin. ENGINE. THIS BULLETIN PROVIDES INFORMATION ON REMOVING A DAMAGED SCREEN FROM THE NON-RETURN VALVE.
SB-01-12-572016-04-26. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-01-15-292015-10-15. Service bulletin. ENGINE. AUDI: ENGINE, ON SOME VEHICLES, WOULD RUN IRREGULARLY OR HAVE MALFUNCTION INDICATOR LAMP (MIL) ON OR POSSIBLE FILTER ELEMENT FOR CAMSHAFT ADJUSTMENT VALVE CAN LOOSEN AND IN OIL CIRCUIT, THERE IS NO DAMAGE FROM LOOSENED PARTICLES. MODEL ALL. ALL YEARS. *PE
TSB-01-14-632014-03-19. Service bulletin. ENGINE. AUDI: THE ENGINE WOULD HAVE A ROUGH IDLE, DIFFERENT MISFIRE FAULTS OR REDUCED PERFORMANCE WITHOUT LOSS OF POWER OR STALLING, THAT CAUSES THE MALFUNCTION INDICATOR LAMP (MIL) ON. MODEL 2008-2015 A3, A4, ALLROAD, TT, A5, A5 CABRIOLET, Q5, A6. *PE
TSB-01-13-702013-04-11. Service bulletin. ENGINE. AUDI: 01 MIL ON P1545, P0121, P0123, P0221, OR P0222 STORED IN ECM. A NUMBER OF INCIDENT MEMORY ENTRIES WITH REGARD TO THROTTLE VALVE ARE STORED IN THE ECM. IN MOST CASES, THE ENTRIES ARE SPORADIC. *JS UPDATED 04/15/2013 *JS
TSB-24-12-242012-05-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AUDI: IMRC (INTAKE MANIFOLD RC) MOTOR WARRANTY EXTENSION. *KB
2015505-102012-05-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AUDI: 01 MIL ON (P1297, P2187, P2279), OIL LEAKS, PRESSURE LOSS, SYSTEM TOO LEAN AT IDLE SPEED, AND INTAKE AIR SYSTEM LEAK. THERE MAY BE WHISTLE NOISE/AIR RUSHING NOISE FROM THE ENGINE. ALSO INCLUDED MODEL AUDI TTS MODEL YEARS 2010-2011. *JS
TSB-01-12-392012-04-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; ELECTRICAL SYSTEM. AUDI: ENGINE HAS REDUCED ENGINE PERFORMANCE WITHOUT LOSS OF POWER OR STALLING; CIRCUIT GROUNDS; FUEL QUALITY POOR; MIL IS CONSTANTLY ILLUMINATED OR FLASHING; ROUGH IDLE; IGNITION COILS INCORRECTLY INSTALLED; ELECTRICAL CONNECTIONS LOOSE OR DAMAGED. *PE
SB-BPGBPYBWT2012-02-09. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); ENGINE AND ENGINE COOLING:ENGINE. AUDI: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INFORMATION PERTAINING TO CERTAIN MODEL VEHICLES WITH 2.0L ENGINE CRANKCASE VENTILATION (PCV) VALVE AND INTAKE MANIFOLD RUNNER CONTROL MOTOR WARRANTY EXTENSION. *PE
TSB-38-11-052011-06-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AUDI: TRANSMISSION PROBLEMS RESULTING IN A DELAYED ENGAGEMENT WHEN COLD OR NO DRIVE ON FIRST ENGAGEMENT. *RM
SB-24-10-612011-06-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. VOLKSWAGEN: MALFUNCTION LIGHT IS ON WITH MISFIRE CODES. THERE IS A SOFTWARE UPDATE. *RM
TSB-20-10-102011-03-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AUDI: ONE OR MORE OF THE FOLLOWING DTCS ARE STORED WITHIN FIRST 60 SECONDS, WHEN COOLANT TEMPERATURE IS BETWEEN 10-39%C ACCORDING TO FREEZE FRAME DATA: DTC P0300 (RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED); DTC P0301-P0306 (CYL. 1 MISFIRE DETECTED-CYL. 6 MISFIRE DETECTED). *PE
TSB-01-10-132011-02-12. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AUDI: MIL ON; ROUGH IDLE; ONE OR MORE OF THE FOLLOWING DTCS ARE STORED-DTC P0300 (RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED); DTC P0301-0312 (CYL. 1 MISFIRE DETECTED-CYL.12 MISFIRE DETECTED); ENGINE MAY HAVE REDUCED PERFORMANCE WITHOUT SIGNIFICANT LOSS OF POWER OR STALLING. *PE
TSB-01-10-092011-02-12. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AUDI: MIL ON; ROUGH IDLE, ONE OR MORE OF THE FOLLOWING DTCS ARE STORED-DTC P0300 RANDOM/MULTIPLE CYLINER MISFIRE DETECTED; DTC P0301-0312 (CYL. 1 MISFIRE DETECTED-CYL. 12 MISFIRE DETECTED); ENGINE MAY HAVE REDUCED PERFORMANCE WITHOUT SIGNIFICANT LOSS OF POWER OR STALLING. *PE
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

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