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Service bulletins for the 2021 Audi A6 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.

1070 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
A6423882047061_52023-04-06. Service bulletin. VISIBILITY:WINDSHIELD; STRUCTURE. This bulletin describes the process to clean sticker residue from the windshield.
A4023512023187_72023-04-06. Service bulletin. STEERING. This bulletin states that squeaking noises which may be more prevalent in wet weather during steering is normal and repair is not needed.
A2723512058831_72023-04-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains a software update for DTC P0CA700 or U046900.
A2723502067906_22023-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information for when the 48V battery is in a low voltage protection state and will not accept a charge; DTC P0A7D00 is logged.
A2723492058831_62023-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains a software update for DTC P0CA700 or U046900.
A2723482069747_12023-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information for when the vehicle does not start due to a drained battery.
A9023112058077_62023-04-06. Service bulletin. SERVICE BRAKES. This bulletin provides instructions for when the customer is concerned about unexpected Audi pre sense front intervention such as an Audi pre sense front warning, front warning jolt, front partial braking, or an audi pre sense emergency braking.
A9023102059891_42023-04-06. Service bulletin. BACK OVER PREVENTION:DISPLAY FUNCTION; ELECTRICAL SYSTEM. This bulletin states that it takes about 20 seconds after switching the ignition on for the Audi Pre Sense symbol advising that "Audi pre sense not available at the moment"
A6023632069594_12023-04-06. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS. This bulletin provides instructions to address a sloshing sound heard in the roof area.
DC_Alternator_92023-03-06. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Meeting minutes mention alternator topic.
A9023082065490_32023-03-06. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin provides instructions for a software update in cases when "SAFE CP" is displayed in the center of the screen of the Audi virtual cockpit, the gauges function normally, and DTC B200FF0 may be stored.
A5723012060196_42023-03-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides instructions for when the central locking and/or door open warning is displayed in the instrument cluster.
A5023112061672_32023-03-06. Service bulletin. STEERING; SERVICE BRAKES. This bulletin provides information to address a creaking noise from the floor area which may be generated during strong braking or steering maneuvers.
A9623822056019_22023-03-06. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE. This bulletin provides instructions for when the anti-theft alarm has gone off for no reason, or did not go off at all. No DTCs are stored.
A9123742069112_22023-03-06. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT:ELECTRICAL. This bulletin provides information on a software update for when saved addresses, favorites, last destinations, HVAC favorite button assignment, and/or icon and shortcut order are lost sporadically; In rare cases the screen may turn completely blue until a bus sleep or an MMI reboot is performed. For Q3 vehicles, MMI may get stuck on the welcome screen. No DTCs are stored.
A9123732069112_12023-03-06. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT:ELECTRICAL. This bulletin provides information on a software update for when saved addresses, favorites, last destinations, HVAC favorite button assignment, and/or icon and shortcut order are lost sporadically; In rare cases the screen may turn completely blue until a bus sleep or an MMI reboot is performed. For Q3 vehicles, MMI may get stuck on the welcome screen. No DTCs are stored.
A9123722052299_72023-03-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information to address when the Audi connect "User management" screen is greyed out, and the customer cannot complete the key user pairing. OR the SOS emergency button is red or flashing read. DTCS P169A00 and U13EB00 are present in the system.
A9023042069416_12023-03-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information for when the 12V socket and/or the cigarette lighter are not working.
DC_Alternator_82023-03-06. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Alternator Vehicle Down Form
DC_Alternator_72023-03-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
A4623412034181232023-03-06. Service bulletin. SERVICE BRAKES. This bulletin provides instructions for brake noise analysis and handling.
A92233320381512023-03-06. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. This bulletin provides instructions for when the washer solvent level warning is on in the DIS but the washer solvent level is correct.
A9123692052299_62023-03-06. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides instructions for when the Audi connect "User management" option is greyed out, or the SOS emergency button is red or flashing red.
A9023992069244_12023-03-06. Service bulletin. ELECTRICAL SYSTEM:ADAS. This bulletin provides instructions for when various driver assist warnings are displayed in the instrument cluster, or the intersection assist arrows flicker for a short period of time after the vehicle has been started.
A9123632060523_22023-02-07. Service bulletin. BACK OVER PREVENTION:SOFTWARE. This bulletin describes the steps to update the MIB3 software when applicable.

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