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Service bulletins for the 2021 Audi S6

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.

1155 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
A0021552011732122022-01-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains general instructions for software updates.
A9721822061976_22021-12-07. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin contains guidance for submitting warranty wiring repairs.
A9621742063336_22021-12-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; LANE DEPARTURE: LANE KEEP: AUTOMATIC STEERING. This bulletin contains a software update that address when intersection assist/ lane assist are inop with DTC C12BFF0.
A9021272064844_12021-12-07. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT. This bulletin contains repair instructions for when the Audi virtual cockpit does not start-up with no DTCs.
A4421842065160_12021-12-07. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; TIRES:TEMPORARY/EMERGENCY SPARE TIRE. This informational bulletin explains how the temporary/collapsible spare wheel inflates.
A4121002065161_12021-12-07. Service bulletin. SUSPENSION. This bulletin contains instructions regarding part number 4K0 941 285 B.
A9121502062115_72021-12-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains instructions for when the nav files are corrupted during an update.
A6921732056421_52021-12-07. Service bulletin. ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE. This informational bulletin contains instructions on when DTC B101C07 is stored in the airbag control module/ safety computer.
A9021222064983_12021-12-07. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin states to replace the instrument cluster when there is a colorful vertical line (pixel error) in the Audi virtual cockpit.
A4821122064018_32021-12-07. Service bulletin. EXTERIOR LIGHTING:HAZARD FLASHING WARNING LIGHTS:UNIT. This bulletin contains a software update to address a red steering warning light with DTC C10AC07 stored.
A9121472061625_32021-12-07. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin states to create a PSS record when the message "SOS - Emergency call malfunction, please contact service" is displayed in the instrument cluster and DTCs B129B11 and B239C11 are stored in the control module for emergency call module and communication unit.
A9021212060332_42021-12-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for creating a PSS record when DTC C12D5FA is stored and the driver assist systems are inoperable and a warning message is displayed.
A9021192061689_22021-12-07. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE. This bulletin states to create a PSS record when the acoustical and optical parking aid are unavailable with DTC B107A16 stored.
A9121462063702_32021-11-05. Service bulletin. UNKNOWN OR OTHER. This bulletin states to create a PSS when the MMI display turns blue. Workaround provided.
A9121442062942_32021-11-05. Service bulletin. UNKNOWN OR OTHER. This bulletin states to create a PSS record when the detailed interaction map flickers.
A9121432063502_32021-11-05. Service bulletin. ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:SOFTWARE; UNKNOWN OR OTHER. This bulletin contains a software update that addresses DTC B200FF9 with various driver assist malfunction messages.
A9121422062266_32021-11-05. Service bulletin. UNKNOWN OR OTHER. This bulletin states to create a PSS record when last destinations, favorites, and home/work addresses are sporadically lost.
A9121412064818_12021-11-05. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI; UNKNOWN OR OTHER. This bulletin contains repair instructions for when it is not possible to establish a bluetooth connection with DTC U110300.
A6921722063398_22021-11-05. Service bulletin. UNKNOWN OR OTHER. This informational bulletin outlines what is damage due to outside influence on a seat belt.
A6921712058455_52021-11-05. Service bulletin. SEAT BELTS. This bulletin contains repair instructions for twisted seat belts.
A9121382064681_12021-11-05. Service bulletin. EQUIPMENT. Informational TSB detailing why the mobile device sometimes cannot be charged wirelessly.
A9021152064692_12021-11-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains a workaround for DTC U131C00 and the HUD not turning on with "The selected system is currently unavailable" message and 12V battery might be drained periodically.
A9021142064683_12021-11-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains instructions for DTC B200049 when the Audi virtual cockpit is blank.
DC 202109282021-10-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Dealer Communication - Vehicle Sales Reporting, Reinstatement, and Audit Policy Update - Effective September 30, 2021
A9421442059217_22021-10-06. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This bulletin contains instructions for when the hazard warning lights activate on their own and may not be able to be turned off.

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