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Service bulletins for the 2005 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.

334 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
20135352007-06-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE CONTROL MODULE UPDATE. *KB
3807022007-04-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SHUDDERS WHEN ACCELERATING AT 10 TO 50% THROTTLE FROM A STATIONARY POSITION, SOMETIMES WITH FLUCUATING ENGINE SPEED. *KB
2407012007-04-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. COLD ENGINE RUNS ROUGH OR STUMBLES; WARM ENGINE MAY STALL WHEN ENGAGING GEAR AND VEHICLE IS STATIONARY. *KB
05072005-12-22. Service bulletin. ENGINE AND ENGINE COOLING. SPORADICALLY AFTER COLD START, ENGINE MAY RUN SLIGHTLY ROUGH FOR A FEW SECONDS AND THE MALFUNCTION INDICATOR LAMP MAY ILLUMINATE WITH ONLY MISFIRE DIAGNOSTIC TROUBLE CODES (DTC) (P0300, P0301, P0302, P0303, P0304) STORED IN DTC MEMORY. *TT
05052005-12-19. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE STUMBLES AFTER COLD START / WARM ENGINE MAY ATTEMPT TO STALL IN IDLE WHEN ENGAGING GEAR WITH VEHICLE STATIONARY. *TT
04022005-08-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE OIL SPECIFICATIONS, OIL CAPACITY, OIL FILTER. TO INCLUDE AUDI 24 2006. *TT
1905042005-07-29. Service bulletin. ENGINE AND ENGINE COOLING. THE COOLANT RESERVOIR IS DIAGNOSED TO BE LEAKING AND INTENDED TO BE REPLACED. *TT
05022005-05-19. Service bulletin. ENGINE AND ENGINE COOLING. FUEL INJECTORS UNNECESSARY REPLACEMENT. *EH
05012005-05-19. Service bulletin. ENGINE AND ENGINE COOLING. FUEL INJECTORS UNNECESSARY REPLACEMENT. *EH
05032005-05-19. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. COOLANT LEAK OR ON HEAT IN PASSENGER COMPARTMENT. *EH
04062005-02-03. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. COOLANT LEAK AT OIL COOLER HOSES. *TT
04092004-12-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE SLIGHTLY STUMBLES AT SLOW INITIAL ACCELERATION AFTER COLD START. *TT

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