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Service bulletins for the 2012 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.

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

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
SM 01-20262026-08-05. Other. ENGINE. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
TSB_2082323_12026-07-07. Service bulletin. ENGINE. This bulletin provides informaiton when the engine is not running smoothly, misfiring.
TSB_2021205_102026-03-03. Service bulletin. ENGINE. This bulletin provides information on VIN Plates, Safety Certification labels, and the ordering procedures.
TSB_2060750_52026-02-06. Service bulletin. ENGINE. This bulletin provides information regarding UV leak additive for finding oil leaks.
TSB_2075530_22025-04-04. Service bulletin. ENGINE. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
A0124482014753_132025-01-07. Service bulletin. ENGINE. This bulletin provides information when the MIL is on; DTCs for misfire, air/fuel ratio imbalance, or lean fuel system stored in the ECM P030000.
A1524532075530_12024-11-06. Service bulletin. ENGINE. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
A2424632074810_22024-10-28. Service bulletin. ENGINE. This bulletin provides information when ther is an Engine: start/stop system fault shown and start/stop system not is working; mileage below 50 km/32 miles.
AWA 24-012024-03-06. Service bulletin. ENGINE; UNKNOWN OR OTHER. This Document informs dealers on the new oil consumption & piston fracture warranty extension for 2012 A4, A5, A6, Q5 & TT / 2013 A4, A5, A6, Q5 & TT / 2014 A4, A5, A6, Q5 & TT / 2016 A3 & TT / 2017 A3 & TT vehicles
37126420306482024-02-20. Service bulletin. ENGINE AND ENGINE COOLING. Engine speed increases when driving downhill, vehicle speed is not increased - CVT transmission
17133620301972024-02-20. Service bulletin. ENGINE AND ENGINE COOLING. Engine oil consumption - Customer complaints, 3.0T TFSI Model Year 2009 ? 2012
17123420301972024-02-20. Service bulletin. ENGINE AND ENGINE COOLING. Engine oil consumption too high, 3.0T TFSI Model Year 2009 - 2012
17123220185502024-02-20. Service bulletin. ENGINE AND ENGINE COOLING. Oil consumption measurement - Repair Authorization (CA)
37H5UPDATE2024-01-22. Service bulletin. ENGINE AND ENGINE COOLING. Multitronic (NVLW)
24ADUPDATEa2024-01-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. ECM Software Update (FED_EMS)
24ADUPDATE2024-01-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. ECM Software Update (FED_EMS)
A0023712070568_12023-10-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information on professional noise analysis with the VAS 611 015 PICO NVH Tool.
A1023262018288102023-07-10. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information on checking for debris when replacing an engine.
A9123942018187132023-06-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information for when the customer advises that there is cracking, grinding, rattling, humming, whining, or similar interference.
A1923362025303142023-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information on the discontinuation and mixing of Audi-approved engine coolants.
A0123412014753122023-03-06. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. This bulletin contains instructions for when to add gasoline additives for cleaning the injectors.
Edition922023-02-06. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. Idenifying and mixing factory fill engine coolants
Edition832023-02-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:IGNITION. 97 no start
011403203322332023-01-03. Service bulletin. ENGINE AND ENGINE COOLING. The programmed values for the misfiring recognition are not automatically reset by deleting the memory once.
011373203322312023-01-03. Service bulletin. ENGINE AND ENGINE COOLING. Engine warning light on after engine replacement

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