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Service bulletins for the 2021 Audi A6

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.

1342 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
A0123912069038_52023-12-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information for when the MIL is illuminated, DTCs P0300, P0301, P0302, P0303, P0304, P0305, P0306.
A0023812070568_22023-12-06. Service bulletin. EQUIPMENT. This bulletin provides information on the VAS 611 015 PICO-NVH tool for professional noise analysis.
SM 51-20232023-11-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This special notice is to inform dealers to return the parts listed only order the successor parts going forward.
SM 49-20232023-11-06. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
A9623882064285_22023-11-06. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides information for when the button for the rear dome light is stuck or inoperative.
A9423672071954_12023-11-06. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS; EXTERIOR LIGHTING:HEADLIGHTS. This bulletin provides information pertaining to when there are foreign objects inside of a headlight or taillight.
A9123402071928_12023-11-06. Service bulletin. BACK OVER PREVENTION:DISPLAY FUNCTION; EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin provides information for when the MMI sidebar is missing in MIB3.
A9023492071958_12023-11-06. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. This bulletin provides information for when the DTC C12D5FA is stored; Audi adaptive light, Audi pre sense fault, and Audi cruise assist inoperable.
A9023462070332_22023-11-06. Service bulletin. EQUIPMENT; EXTERIOR LIGHTING:TURN SIGNAL. This bulletin provides information for when the turn signal is very loud with Virtual Cockpit.
A9023452064983_62023-11-06. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin provides information for when the Virtual cockpit displays a colorful line (pixel error).
A8723602064077_32023-11-06. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REFRIGERANT HOSES AND FITTINGS. This TSB describes a method for leak detection for R134A and R1234yf refrigerant platforms only.
A7423262071893_12023-11-06. Service bulletin. EQUIPMENT:OTHER:LABELS. This bulletin provides damage assessment guidelines for textile seat covers.
A6623032060333_42023-11-06. Service bulletin. STRUCTURE:BODY. This bulletin provides information for when the black optic trim is discolored.
A4823562066318_52023-11-06. Service bulletin. STEERING. This bulletin provides information when there is a rear wheel steering malfunction - DTCs B200FF0 pr C12A329.
A2723612067906_42023-11-06. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This bulletin provides information for when DTC P0A7D00 is stored.
A0123852058038_52023-11-06. Service bulletin. ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE. This bulletin requests that technicians create a Pending Service Solutions record in the Pending Service Solutions Database in instances where there are misfires with DTCs P0300 through P0306.
A0123812028842_42023-11-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides instructions regarding unauthorized chip tuning (TD1).
A0023782066297_42023-11-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information related to the VIN-4-PIN Program.
A0023762071721_12023-11-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information for when unauthorized/unjustified DTC memory entries are captured in ODIS test Plans (Ghost faults).
SM 50-20232023-11-06. Service bulletin. UNKNOWN OR OTHER. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
AVIN4PIN202310012023-11-06. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; STRUCTURE:BODY:DOOR; ENGINE AND ENGINE COOLING; SUSPENSION. 3.0L engine sound generator malfunctioning Air suspension warning - DTC P089200 charge handle doesn't release Check engine lamp is on, DTC (s) P010600, P023600, P023700, P023800 "Check engine lamp on, DTC P042000: Catalyst System, Bank1 Efficiency Below" Coolant leak from expansion tank Corrosion inside door module Fuel pressure low. DTC P008700 Leak from oil pan Low coolant warning in cluster, coolant level is correct Noise from belt tensioner damper Noise from front door trim panel while driving Vehicle will not charge
A9223372056963_22023-11-06. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. This bulletin provides information on repairing the corrugated hose for the windshield washer system.
A8723552068460_52023-11-06. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin provides information for when the air conditioning does not cool, DTCs P053000, or P251500 stored in C5.
A3923562059057_62023-11-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information for when there are vibrations or binding in tight turns with quattro Ultra.
A0123802069038_42023-11-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulltin provides information for when the MIL, cylinder misfires, DTCs P0300, P0301, P0302, P0303, P0304, P0305, P0306.

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