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Service bulletins for the 2013 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.

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

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

Bulletins, newest first
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)
Update24AD2024-01-22. Service bulletin. UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. ECM Software Update
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.
001466203794912023-01-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). A DTC with the description ?Invalid Data Record? is stored after an ECU has been replaced or updated.
1491202884222022-08-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Customer vehicle is fitted with unauthorized ECM tuning.
1478203730712022-08-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. ECM software needs to be updated.
24 14 50 20382122022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). The engine judders or runs erratically. The vehicle judders during acceleration. No event entry is stored in the engine control module (ECM). The air mass meter is suspected to be faulty. Possible incorrect function on the sensor elements of the air mass meter.
37 14 29 20290272022-05-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Customer may report transmission warning light is illuminated. In some cases, the vehicle will not move after being started and placed into gear. After key cycle, the vehicle drives without restriction. The DTCs are stored due to an issue with the transmission control module software.
37 13 03 20336532022-05-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. The entry is caused by an overly sensitive diagnosis in the TCM, due to an error in the engine control module (ECM), J623, software. This error does not affect the driving characteristics.
A2021352043357_12021-08-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ELECTRICAL SYSTEM:SOFTWARE. This technical service bulletin provides a software code for correcting an issue that causes DTC P046100.

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