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Service bulletins for the 2011 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.

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

By type

By component

By trouble code

Only bulletins with component: Transmission control module are shown. Show all

Bulletins, newest first
37 13 01 20289852022-05-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). The fault occurs with ATF temperature below 60o C. Check for this temperature range in the extended environmental conditions of the diagnosis protocol. This TSB only applies if the ATF level is correct and there are no leaks.
37 13 00 20328122022-05-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE. Further transmission control module (TCM), J217, software calibration needed to improve shift concerns. Further engine control module (ECM), J623, software calibration needed to improve hesitation.
37 12 74 20293052022-05-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE. Harsh downshifts when braking or harsh 1-2 upshift under acceleration. Customer may report harsh downshifts while braking or harsh 1-2 upshift under acceleration. Further TCM software calibration to improve shift concerns.
37 12 72 20289852022-05-02. Service bulletin. ELECTRICAL SYSTEM:ADAS:HUD:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Customer may report transmission warning lamp illuminated in instrument cluster. Fault code P074100 Torque Converter Clutch Circuit Performance or Stuck Off is stored in TCM.
37 12 71 20293052022-05-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Harsh downshifts when braking or harsh 1-2 upshift under acceleration. Customer may report harsh downshifts while braking or harsh 1-2 upshift under acceleration. Further TCM software calibration to improve shift concerns.

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