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Service bulletins for the 2021 Audi A4 allroad

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.

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

By type

By component

By trouble code

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
A4622282051095_52022-03-04. Service bulletin. EQUIPMENT:ELECTRICAL. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
A1922282025303132022-02-04. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin contains instructions for identifying and mixing factory fill coolants.
A1922272025303122022-02-04. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT. This bulletin contains instructions for identifying and mixing factory fill coolants.
A9122732064429_22022-02-04. Service bulletin. FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: CAMERA; EQUIPMENT:ELECTRICAL. This bulletin states to create a PSS record for when the star button is programmed to the front camera views and is lost after a bus sleep cycle.
A9122722059528_42022-02-04. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains ODIS instructions for DTC B200096 or B200000 with an SOS malfunction warning displayed in the instrument cluster.
A9122702062466_22022-02-04. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin describes the ways in which a variety of Audi vehicles connect to Apple Wireless CarPlay, and the methods to troubleshoot connection concerns.
A4622272034181192022-02-04. Service bulletin. EQUIPMENT; SERVICE BRAKES; EQUIPMENT ADAPTIVE/MOBILITY. This technical service bulletin provides troubleshooting for brake noise.
A9022422065932_12022-02-04. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin describes a concern where the screen of the virtual cockpit has a white sheen and the associated repair process.
A9022382065490_22022-02-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. This bulletin describes a concern where the message "SAFE CP" displays in the virtual cockpit and recommends a software update to resolve this matter.

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