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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
A5520512014055_82021-01-08. Service bulletin. EQUIPMENT; ENGINE; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains instructions for addressing discoloration due to moisture on a new vehicle.
A3920382060169_22021-01-08. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for when DTC U101300 is logged with sports differential warning lamps or messages.
A3420502061714_12021-01-08. Service bulletin. POWER TRAIN. This bulletin contains repair instructions for resolving a leak on the transmission case.
A0020432061669_12021-01-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin contains instructions for Audi connect before performing any MMI work.
A5020052060335_32021-01-08. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STRUCTURE. This bulletin contains instructions for repairing water ingress into the footwell.
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.
21A6S6CUSTDEL2021-01-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Infotainment Section: ADDED: Check radio settings and ensure 'Online additional data' is toggled on and 'online station tracking' is set to Automatic
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
A9120362061345_12020-12-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin contains information regarding connectivity issues.
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.
A9620592061155_12020-12-04. Service bulletin. LANE DEPARTURE. This informational bulletin states to create a PSS as there is a sporadic failure of the intersection/lane changing assistance.
A9120272061257_12020-12-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains instructions regarding Audi connect software failures and how to resolve it.
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
21A6S6TECHREPRT2020-11-05. Service bulletin. ELECTRICAL SYSTEM. Driver Assistance Section: ADDED: "Activate rear cross traffic assist (if equipped)"
A9120252059528_22020-11-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains ODIS instructions for DTC B200096 or B200000 with an SOS malfunction warning displayed in the instrument cluster.
A9020782061157_12020-11-05. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin states to create a PSS as the traffic -sign based speed warning threshold setting is not stored.
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.

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