Service bulletins for the 2020 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.
1382 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| A9621632059201_4 | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information for when the messages appear in the instrument cluster about the high beam assist and/or traffic sign detection with DTC C12B3FD. |
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| A9121812056076_1 | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for when there is no diagnostics communication with the ConBox. |
| A9121802062466_1 | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin contains instructions about Apple Carplay cannot be started with Wi-Fi. |
| A1321132062387_1 | 2021-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for determining if a repair is needed when coolant touches a poly V-belt and/or a toothed belt. |
| Dealer 19P9 | 2021-04-06. Service bulletin. ENGINE AND ENGINE COOLING. Due to a production irregularity, the cooling system in affected vehicles may have been filled with an antifreeze concentration for min. -25 degrees Celsius instead of the required concentration for min. -40 degrees Celsius. |
| Circular 19P9 | 2021-04-06. Service bulletin. ENGINE AND ENGINE COOLING. Due to a production irregularity, the cooling system in affected vehicles may have been filled with an antifreeze concentration for min. -25 degrees Celsius instead of the required concentration for min. -40 degrees Celsius. |
| A9121792062480_1 | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin states to clear the DTCs and release the vehicle. |
| A9121782050565_3 | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains general software update instructions for vehicles with PR Code 7UH. |
| A9121772056076_1 | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for when there is no diagnostics communication with the ConBox. |
| A9121762037809_8 | 2021-04-06. Service bulletin. EQUIPMENT. This informational bulletin contains instructions about updating the navigation map. |
| A9021952062601_1 | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for ghost DTC U110100. |
| A9021932056015_2 | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This bulletin contains instructions for DTC B170AF1 or DTC B200FF3. |
| A4821952062288_2 | 2021-04-06. Service bulletin. STEERING. This bulletin contains repair instructions for when the electric steering column is not working in the vertical direction. |
| A3921422051558_6 | 2021-04-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains repair instructions for when the message "four-wheel drive malfunction" shows up sporadically in the instrument cluster with DTC C05ED00. |
| A1921132058767_7 | 2021-04-06. Service bulletin. EQUIPMENT. This bulletin contains instructions for DTCs P218100, P017B00, P308100, and P01E400. |
| A1921122061918_2 | 2021-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank. |
| A0121992054893_4 | 2021-04-06. 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. |
| A0121002058309_5 | 2021-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains a software update for when DTC P001100 and/or P030100, P030200, P030300, P030400 are stored in the ECM with potential misfiring. |
| A9121752062386_1 | 2021-03-04. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This bulletin states to reset the MMI system and then create a PSS record if it sporadically is no longer possible to change radio stations. |
| A9121742062388_1 | 2021-03-04. Service bulletin. EQUIPMENT. This bulletin contains instructions for when quick access toolbar resets itself and advises to create a PSS record. |
| A9021912055906_4 | 2021-03-04. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. This bulletin contains PSS instructions for when the Audi Adaptive light, pre sense malfunction, and the Adaptive Cruise Assist does not work. |
| A9021902060332_3 | 2021-03-04. 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. |
| A3921402059057_3 | 2021-03-04. Service bulletin. WHEELS; SUSPENSION. This bulletin contains repair instructions for noises when in reverse or vibrations/humming/droning or rubbing when fully turning the wheel. |
| SM 14-2021 | 2021-03-04. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the parts listed if it meets the criteria provided. |
| A4821932062288_1 | 2021-03-04. Service bulletin. STEERING. This bulletin contains repair instructions for when the electric steering column is not working in the vertical direction. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.