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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.

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By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
A2724842074729_22025-01-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information in circumstances where there are noises/vibration from front of vehicle in dynamic mode.
A9124872024323_112024-12-04. Service bulletin. ELECTRICAL SYSTEM. This TSB Provides information when parking assistance provides false warnings.
A9124432074929_12024-09-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin proves information when the bluetooth does not work, adaption channel deactivated.
A9124432074929_12024-09-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin proves information when the bluetooth does not work, adaption channel deactivated.
A9124322018187_162024-08-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informaiton when there are speaker rattles, vibrations or audio interference in the sound system.
A9424822074347_12024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informationw hen there are optical concerns with the tail lights.
A9124252018187_152024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informaiton when there are speaker rattles, vibrations, or audio interference.A1
A9424822074347_12024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informationw hen there are optical concerns with the tail lights.
A9124252018187_152024-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informaiton when there are speaker rattles, vibrations, or audio interference.A1
37126720280532024-02-20. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). TCM software update for downshift concerns
27121520311452024-02-20. Service bulletin. ELECTRICAL SYSTEM. Excessive Voltage DTCs present in multiple control units
27121420311452024-02-20. Service bulletin. ELECTRICAL SYSTEM. Excessive Voltage DTCs present in multiple control units
A9123062024323102024-01-04. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE. This bulletin provides information when the parking assistance provides false warnings.
A9023562032113_82023-12-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides general information about the outside air temperature reading.
A0123812028842_42023-11-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides instructions regarding unauthorized chip tuning (TD1).
A0023762071721_12023-11-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information for when unauthorized/unjustified DTC memory entries are captured in ODIS test Plans (Ghost faults).
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
Edition832023-02-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:IGNITION. 97 no start
DC_Alternator2023-01-06. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Support for Customers Affected by Alternator Back-order
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.
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.
0014652011732102023-01-03. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Technical Service Bulletin (TSB) details the general process for carrying out a Software Version Management (SVM) software update for any TSB or Update.
971441203676412022-11-21. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. 97 No start (DTC P068A00)

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