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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
Edition922023-02-06. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. Idenifying and mixing factory fill engine coolants
Edition902023-02-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Technical bulletins and updates
Edition892023-02-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. ElsaPro Software update and technical bulletins
Edition96-12023-02-06. Service bulletin. ELECTRICAL SYSTEM:WIRING. i-wire new wiring diagram application
Edition942023-02-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Pending service solutions and bulletins
Edition692023-02-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Technical bulletins and updates
Edition742023-02-06. Service bulletin. EQUIPMENT:ELECTRICAL. Diagnostics and updates
Edition722023-02-06. Service bulletin. EQUIPMENT:ELECTRICAL. Windows XP- End of Support (EOS) and new VAS diagnostic services
Edition1172023-02-06. Service bulletin. EQUIPMENT:ELECTRICAL. Product quality is Announcing a new innovation in technical service bulletins: portable, easy to access videos
Edition1152023-02-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Technical bulletins and updates
Edition832023-02-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:IGNITION. 97 no start
Edition822023-02-06. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. 91 Generation III radio: Loose or broken control knobs
DC_Alternator2023-01-06. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Support for Customers Affected by Alternator Back-order
DC_RECALLS2023-01-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SAFETY RECALLS, COMPLIANCE RECALLS and STOP SALES
A5722002022032102023-01-06. Service bulletin. LATCHES/LOCKS/LINKAGES:DOORS:LOCK. This technical service bulletin provides troubleshooting information for the vehicle locking system.
011463203363022023-01-03. Service bulletin. ELECTRICAL SYSTEM. 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.
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.
011401202730642023-01-03. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. Assistance to properly diagnose a fuel pressure sensor -G247- concern
011386203363012023-01-03. Service bulletin. ELECTRICAL SYSTEM. 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.
011383203300112023-01-03. Service bulletin. ENGINE AND ENGINE COOLING. Under certain driving conditions, the secondary air ports in the cylinder head can accumulate carbon over time, causing a restriction.
011373203322312023-01-03. Service bulletin. ENGINE AND ENGINE COOLING. Engine warning light on after engine replacement
011330202708252023-01-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. DTC P0234 (Turbo/Super Charger Overboost Condition) is stored in the engine control module, J623 (address word 01). No other DTCs are stored. Technical Background DTC P0234 can be set inadvertently by the software application.
011329203322322023-01-03. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). The programmed values for the misfiring recognition are not automatically reset by deleting the memory once.
011309201475382023-01-03. Service bulletin. FUEL SYSTEM, GASOLINE. The use of contaminated gasoline or gasoline with a low content of deposit control additives may result in one or more conditions.
011301203300122023-01-03. Service bulletin. ENGINE AND ENGINE COOLING. Under certain driving conditions, the secondary air ports in the cylinder head can accumulate carbon over time, causing a restriction.

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