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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
21AUUSMaint7212021-08-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Additional Maintenance Items: Rear axle, quattro Sport - Change ATF and differential oil. CHANGED "Change Fluids". Every 60,000 miles - Only: RS 5, S6, S7, SQ7, SQ8, RS Q8. Oil Capacity Chart: Changed Q7 45 TFSI 2.0L oil type to "508".
A5721822063236_12021-08-04. Service bulletin. LATCHES/LOCKS/LINKAGES:DOORS:LOCK; STRUCTURE:BODY:DOOR. This bulletin contains diagnosis information for when the front and/or rear doors cannot be opened and there maybe be various DTCs associated.
A9121152063502_12021-08-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This bulletin contains a software update that addresses DTC B200FF9 with various driver assist malfunction messages.
A4821072064018_12021-08-04. Service bulletin. STEERING; EQUIPMENT; STEERING: STEERING WHEEL/HANDLE BAR. This bulletin contains a software update to address a red steering warning light with DTC C10AC07 stored.
A3921432059057_42021-08-04. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR; STEERING. This bulletin contains repair instructions for noises when in reverse or vibrations/humming/droning or rubbing when fully turning the wheel.
A9121142053916_32021-08-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This informational bulletin contains instructions for when a non-plus sized iPhone heats up while wirelessly charging and the CarPlay screen may appear frozen.
A9121122059528_32021-08-04. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains ODIS instructions for DTC B200096 or B200000 with an SOS malfunction warning displayed in the instrument cluster.
A3721042063822_12021-08-04. Service bulletin. STEERING:GEAR BOX (OTHER THAN RACK AND PINION); ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This bulletin contains a software update for when DTC P17E600, P091900, and/or P18CB00 is stored with a selector lever fault and the selector lever does not work.
A1321152061461_42021-08-04. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR:INTEGRATED STARTER(OTHER THAN PROPULSION); EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE. This bulletin contains repair instructions to address noises or a message in the DIS display.
A6021542054480_22021-07-02. Service bulletin. VISIBILITY:FIXED PANARAMIC ROOF/SKY LIGHT ASSEMBLY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin contains repair information for Panoramic sunroofs.
A1921192061918_32021-07-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.
A0021482021205_62021-07-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STRUCTURE. This informational bulletin explains how to order replacement VIN plates, Safety Certification Labels, etc.
A1521392053278_82021-07-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. This bulletin contains repair instructions for 3.0 and 2.9 TFSI engines that have oil loss around the engine compartment, front end, and underbody.
A9121102062115_52021-07-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This bulletin contains instructions for when the nav files are corrupted during an update.
A9121092063702_12021-07-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin states to create a PSS when the MMI display turns blue. Workaround provided.
A9021062061489_32021-07-02. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). This bulletin states to create a PSS record if the driver assistance systems are sporadically not working.
A6821342063737_12021-07-02. Service bulletin. STRUCTURE:FRAME AND MEMBERS; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT:MECHANICAL. This bulletin contains instructions on how to address a noise from the front center console.
A0021472031473_32021-07-02. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:CONCEALMENT DEVICES; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STRUCTURE. This information bulletin states to remove the car wash bristle and advise the customer to go somewhere else to prevent it from occurring again.
SM 50-20212021-07-02. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
A9421402055803_32021-07-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin contains an explanation for a perceived defect.
A9421392063739_12021-07-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EXTERIOR LIGHTING:HEADLIGHTS:DAYTIME RUNNING LIGHTS:BULBS. This information bulletin explains how the daylights turn on and off.
A9121082063290_12021-07-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. This bulletin contains instructions for troubleshooting FoD malfunctions.
A9621702063336_12021-07-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; LANE DEPARTURE:SOFTWARE. This bulletin contains a software update that address when intersection assist/ lane assist are inop with DTC C12BFF0.
A4821052063527_12021-07-02. Service bulletin. STEERING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions for calibrating the steering angel sender G85.
A4821032063546_12021-07-02. Service bulletin. EQUIPMENT; STEERING. This bulletin states how to check for a dynamic steering actuator problem. Solution is under development.

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