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Service bulletins for the 2021 Audi e-tron

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.

1220 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
A4321532059363_22021-09-02. Service bulletin. SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM. This bulletin contains repair instructions for DTC C1260F0 and U112100 with an air suspension malfunction warning.
A4321522058686_22021-09-02. Service bulletin. SUSPENSION. This bulletin contains instructions for when DTC U12B800 or P000000 is stored in the suspension control module.
A4221462038689_52021-09-02. Service bulletin. SUSPENSION. This bulletin contains information on how to fix a clunking or rattling noise heard from the rear suspension when the vehicle is driven over bumps.
A1921222046712_32021-08-04. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap.
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.
A5721812064183_12021-08-04. Service bulletin. EQUIPMENT; STRUCTURE:BODY:DOOR. This bulletin contains repair instructions for detached outer door seals.
A9621722061932_32021-08-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; LANE DEPARTURE. This bulletin contains instructions for when DTC U112300 is stored.
A9421432054161_32021-08-04. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; EXTERIOR LIGHTING. This bulletin contains instructions for adjusting the matrix-design high beams.
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.
A9421422063973_12021-08-04. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS; ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains a software update for a tail light warning with DTCs B16D431, B16D531, B16D631, and/or B16D731.
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.
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.
A4521172061906_22021-07-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; PARKING BRAKE:ELECTRICAL; SUSPENSION. This bulletin contains a software update for DTC U103100.
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.
A9021072063789_12021-07-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin states to create a PSS record when the average long-term energy consumption is implausibly low in the instrument cluster.
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.
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.
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.
SM 43-20212021-07-02. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
Dealer 72M12021-07-02. Service bulletin. SEATS:BARRIERS; STRUCTURE; LATCHES/LOCKS/LINKAGES. Due to a manufacturing discrepancy, it may only be possible to lock the seat backrest back in place (when restoring it to an upright position) by exerting more force than usual. If the backrest is not locked in place properly, this can be seen by a red indicator on the backrest latch.
Circular 72M12021-07-02. Service bulletin. SEATS; EQUIPMENT; STRUCTURE; SEATS:BARRIERS. Due to a manufacturing discrepancy, it may only be possible to lock the seat backrest back in place (when restoring it to an upright position) by exerting more force than usual. If the backrest is not locked in place properly, this can be seen by a red indicator on the backrest latch.

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