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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
A9121762037809_82021-04-06. Service bulletin. EQUIPMENT. This informational bulletin contains instructions about updating the navigation map.
A9021952062601_12021-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for ghost DTC U110100.
A9021932056015_22021-04-06. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This bulletin contains instructions for DTC B170AF1 or DTC B200FF3.
A4821952062288_22021-04-06. Service bulletin. STEERING. This bulletin contains repair instructions for when the electric steering column is not working in the vertical direction.
A1921122061918_22021-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.
A0121992054893_42021-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for documenting the "Please reduce Oil Level" message in the instrument cluster potentially with an Engine Warmup request.
A9021902060332_32021-03-04. Service bulletin. BACK OVER PREVENTION. This bulletin contains instructions for creating a PSS record when DTC C12D5FA is stored and the driver assist systems aer inoperable and a warning message is displayed.
21TechRefGde2212021-03-04. Service bulletin. EQUIPMENT. Q5: Vehicle Prepartion Section: REMOVED: "Set adaption channel to enable CD Ripping using Guided Functions" Settings Section: REMOVED: "(if equipped)" from Turn off Manual Speed Warning On Hoist Inspection Section: ADDED to Install Wheel Bolt Covers: "When installing, ensure proper alignment to the valve stem (indentation in the wheel) lines up with the tab on the center cap to ensure correct mounting" Driver Assistance Section: REMOVED "(if equipped)" from "Verify operation of parking system"
SM 14-20212021-03-04. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
A4821932062288_12021-03-04. Service bulletin. STEERING. This bulletin contains repair instructions for when the electric steering column is not working in the vertical direction.
A4721082055646_22021-03-04. Service bulletin. SERVICE BRAKES. This bulletin contains repair instructions for when the vehicle sporadically does not start and there is a hard brake pedal concern.
A4621252054385_22021-03-04. Service bulletin. EQUIPMENT; SERVICE BRAKES. This informational contains an explanation for when the customer hears creaking noises when braking at almost standstill (crawling when pulling away or briefly before standstill).
SM 15-20212021-03-04. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the part numbers listed (State of California only).
A9721782061976_12021-03-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains guidance for submitting warranty wiring repairs.
A9421342012749_12021-03-04. Service bulletin. EXTERIOR LIGHTING. This bulletin contains instructions for addressing condensation in the headlights.
A9321432062211_12021-03-04. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin states to create a PSS when the red battery symbol is shown in the cluster with DTC P0B1300 stored.
A9121692062115_22021-03-04. Service bulletin. EQUIPMENT. This bulletin contains instructions for when the nav files are corrupted during an update.
A9121682062266_12021-03-04. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This bulletin states to create a PSS record when last destinations, favorites, and home/work addresses are sporadically lost.
A9121672061625_22021-03-04. Service bulletin. ELECTRICAL SYSTEM. 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.
A9121662062264_12021-03-04. Service bulletin. EQUIPMENT. This bulletin contains instructions for addressing download issues.
A9021892062265_12021-03-04. Service bulletin. LANE DEPARTURE. This bulletin contains a software update that addresses when the lane departure warning system is sporadically not available.
A4621222051095_42021-03-04. Service bulletin. EQUIPMENT. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
A0121982062323_12021-03-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repairs for a wiring issue with DTCs P010600 and P023600 with a possible MIL light and a hesitation, low power or bucking/jerking sensation while driving.
A4421812062246_12021-03-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair instructions for when the tire pressure and temperature is not available in the instrument cluster with DTC C1239F0.
A1521372053278_62021-03-04. Service bulletin. ENGINE AND ENGINE COOLING. 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.

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