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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
A5524882060265_32024-03-06. Service bulletin. STRUCTURE. This bulletin provides information on finding water ingress on the rear lid structure.
441342202256372024-03-04. Service bulletin. SUSPENSION. Steering wheel shimmy, vibration and/or oscillation
A7024862044417102024-02-06. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY:ROOF AND PILLARS. This bulletin provides information for when there are noises from the headliner/sunroof area.
A2724652058831122024-02-06. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides information for when there is a 48V vehicle electrical system warning; DTC U046900 is stored in the ECM.
A9024722072065_22024-02-06. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides information when there are flickering lines in Audi virtual cockpit.
A3424672067653_62024-02-06. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This bulletin provides information when there is function restriction with event memory P071800 - P276800 (symptom 20736-20737).
A1524462072713_12024-02-06. Service bulletin. POWER TRAIN. This bulletin provides service information on noises from the drivetrain duel-mass flywheel.
AUD4927ENG2024-01-22. Service bulletin. UNKNOWN OR OTHER. Due to new Minnesota state regulations regarding biofuels, biodiesel blends of B5 or less may not be available in the State of Minnesota.
A2723642058831112024-01-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE. This bulletin provides information for when there is a 48V vehicle electrical system warning; DTC U046900 is stored in the ECM.
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.
A9023662072566_12024-01-04. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE. This bulletin provides information when the driver assist systems have DTC B187A00 with symptom 98341 stored.
A1323222072511_12024-01-04. Service bulletin. POWER TRAIN; FUEL SYSTEM, OTHER:KINETIC:FLYWHEEL,BEARINGS. This bulletin provides service information when there are noises from the drivetrain, dual mass flywheel.
A0023822047812_72024-01-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin provides information on how to set up and use the SD Creator for obtaining vehicle software updates via the Mirror Server.
A2723632058831102024-01-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information for when there is a 48V vehicle electrical system warning; DTC U046900 is stored in the ECM.
A9123542067843_32024-01-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin provides information when the configuration appears without apparent reason with MIB3.
A8723642061277_32024-01-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin provides information when the air conditioning cooling is diminished, and/or the compressor is noisy.
A4723262055646_62024-01-04. Service bulletin. UNKNOWN OR OTHER; SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES. This bulletin provides information for when there is a hard brake pedal while attempting to start the vehicle.
A4523362072304_12024-01-04. Service bulletin. UNKNOWN OR OTHER; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT; ELECTRICAL SYSTEM:ADAS:HILL DESCENT ASSIST:SENSOR. This bulletin provides information for when the ABS/ESC speed sensor has an implausible signal.
A4223542038689_82024-01-04. Service bulletin. SUSPENSION:REAR; UNKNOWN OR OTHER. This bulletin provides information when there is a rattle noise from the rear suspension.
A3523472064312_52024-01-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); UNKNOWN OR OTHER. This bulletin provides information when the Gearbox warning is on, DTC P17F900 is stored in the TCM.
A3423662067653_52024-01-04. Service bulletin. EQUIPMENT:ELECTRICAL; UNKNOWN OR OTHER. This bulletin provides information for when there is a function restriction with event memory entry P071800 - P276800 (symptom 20736 - 20737).
A1923462070349_32024-01-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:ENGINE COOLANT HOSES AND FITTINGS; UNKNOWN OR OTHER. This bulletin provides information when there is a loss of coolant from the coolant pump - V6 TFSI.
A0123042072274_12024-01-04. Service bulletin. ENGINE. This bulletin provides information when the vehicle is running rough at idle; P030000, P030200, P030300, P030400.
A9123532062264_22024-01-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin provides information for when the rear MMI control panel (SCON) shows the message "Software update could not be downloaded".
A9123522072285_12024-01-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin requests that technicians create a record in the Pending Service Solutions database in instances where the air conditioning function favorite on the lower display is lost.

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