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Service bulletins for the 2020 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.

1382 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
A5020032061672_12021-01-08. Service bulletin. STRUCTURE:BODY; STEERING; SERVICE BRAKES; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions to correcting a creaking noise in the floor area.
A4020222058421_32021-01-08. Service bulletin. STEERING; SUSPENSION. This bulletin contains repair instructions for when there is squeaking and creaking when steering or during suspension movement.
A3920392051558_52021-01-08. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains repair instructions for when the message "four-wheel drive malfunction" shows up sporadically in the instrument cluster with DTC C05ED00.
SM C-20202021-01-08. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the part numbers listed (State of California only).
A0020362002047_12020-12-21. Service bulletin. EQUIPMENT:ELECTRICAL. This information bulletin contains instructions for technicans on how to ensure their TAC call goes smoothly.
Dealer 13H32020-12-05. Service bulletin. ENGINE; EQUIPMENT. The engine may not run smoothly due to a non-optimal control of the camshaft adjuster during specific operating conditions. In rare cases, the engine may even stop running under these conditions. However, it is possible to restart the engine at any time afterwards. Internal research has shown that the issue can only occur when the engine is idling (i.e. when the vehicle is stationary or just before the vehicle comes to a stop).
A9120392061490_12020-12-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. This bulletin covers Audi connect: oil level in the myAudi app is implausible
A9120372061029_22020-12-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains s software update for when the lower display flickers.
A9020802061489_12020-12-04. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:ADAS:CONTROL MODULE. This bulletin states to create a PSS record if the driver assistance systems are sporadically not working.
A6920592058923_32020-12-04. Service bulletin. EQUIPMENT; AIR BAGS:FRONTAL; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains instructions for when there are noises coming from the driver's airbag.
A3920362059057_22020-12-04. Service bulletin. STEERING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains repair instructions for noises when in reverse or vibrations/humming/droning or rubbing when fully turning the wheel.
A1320102061461_12020-12-04. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. This bulletin contains repair instructions to address noises or a message in the DIS display.
A9120292056076102020-12-04. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains instructions for when there is no diagnostics communication with the ConBox.
A9120302061295_12020-12-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This informational bulletin explains how USB damage can occur.
A9120262058769_32020-12-04. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; EQUIPMENT. This bulletin contains instructions for checking the sensors and resolving DTCs B107BF0 and B10FCF0.
A8720112061277_12020-12-04. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This bulletin contains repair instructions for when the A/C cooling is diminished or the compressor is noisy.
A5020022060335_22020-12-04. Service bulletin. STRUCTURE. This bulletin contains instructions for repairing water ingress into the footwell.
2010-2021EngOil2020-12-04. Service bulletin. EQUIPMENT. Added Saga Part number for 0W40 oil: SAGA Part: G E55040S0
A9120242026611_72020-11-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains a guide for troubleshooting HD radio issues.
A4820912053869_42020-11-05. Service bulletin. STEERING:STEERING WHEEL /HANDLE BAR:HAND HEATER/COOLER. This bulletin contains repair instructions for when DTC B145504 with symptom code 7340800.
A8720092060985_12020-11-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This bulletin contains a software update for when the rear HVAC control's off button does not respond.
A9120222055945_52020-11-05. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains repair instructions for when the warning message 'SOS Emergency call function deactivated' is seen in the instrument cluster.
A9120212056076_92020-11-05. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions for when there is no diagnostics communication with the ConBox.
A6620672060333_22020-11-05. Service bulletin. EQUIPMENT; STRUCTURE:BODY. This bulletin contains instructions for when the black optic trim is discolored.
A0120922058309_42020-11-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. This bulletin contains a software update for when DTC P001100 and/or P030100, P030200, P030300, P030400 are stored in the ECM with potential misfiring.

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