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Service bulletins for the 2020 Audi A8

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.

1291 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
A5721722055932_62021-03-04. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains a software update for DTC B122D29 or U122800 and a potential part replacement.
A1721122060750_22021-03-04. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for using the UV additive to find engine oil leaks.
A9121642024323_72021-02-04. Service bulletin. PARKING BRAKE:ELECTRICAL:CONTROL MODULE. This bulletin contains technical information regarding when the parking aid sporadically warns of obstacles that don't exist or it is inoperative/constant warning.
A9021872062065_12021-02-04. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin states to replace the instrument cluster control module when DTCs B11E101 and B11E201 are stored in the instrument cluster and night vision respectively.
A2021342060377_32021-02-04. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. This bulletin contains repair instructions for when DTC P310B00 is stored and the engine does not start or intermittently does not start.
A1921112061918_12021-02-04. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.
A1521362053278_52021-02-04. 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.
A9121632060474_22021-02-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin advises the technician to create a PSS record for when after a software update, with active privacy settings, e.g. "Use of vehicle position", the pop-up window is shown with every ignition cycle. Message persists even if "Do not show again" is selected.
A9421322055123_42021-02-04. Service bulletin. EXTERIOR LIGHTING. This bulletin contains repair instructions for a warning message regarding the rear lighting. There are several possible DTCs that could be stored.
A9121602061817_22021-02-04. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. This bulletin contains a software update that addresses issues with the adaptive driving assistant and DTC C12EBF1 .
A7221312060085_42021-02-04. Service bulletin. SEATS; ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains a software update that addresses the sporadic issue where the front seats move into an implausible position.
A6621682046229_22021-02-04. Service bulletin. STRUCTURE. This informational bulletin outlines proper warranty procedure for optical defects.
A4821922061904_12021-02-04. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. This bulletin contains repair instruction for when DTC C110DF0 is stored and the yellow steering lamp is on.
A0121962060429_22021-02-04. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains instructions for when there may be a noise from the exhaust flap or there are DTCs sporadically stored in the ECM.
A9120422055338_42021-01-08. Service bulletin. FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; EQUIPMENT. This informational bulletin contains information on when the Adaptive Cruise Assist on DTC C12EBF1 with symptom code 11567120.
A9020832061689_12021-01-08. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin states to create a PSS record when the acoustical and optical parking aid are unavailable with DTC B107A16 stored.
A8720122061660_12021-01-08. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains repair instructions for when the air conditioning does not cool and DTC B16A284 is stored.
A7220302060085_32021-01-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; SEATS. This bulletin contains a software update that addresses the sporadic issue where the front seats move into an implausible position.
A9120522056248_22021-01-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains a software update for when the laser scanner alignment is unsuccessful.
A9120532053997_32021-01-08. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains a software update for larger amount of washer fluid used.
A9120542053776_72021-01-08. Service bulletin. FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains a software update and test plan for DTCs C12EBF1 or C12EB92.
A5320042043016_22021-01-08. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM: CABLES; EQUIPMENT. This bulletin contains repair instructions for when cables are hanging in view with no DTCs.
A9420302055123_32021-01-08. Service bulletin. EXTERIOR LIGHTING; VISIBILITY; EQUIPMENT. This bulletin contains repair instructions for a warning message regarding the rear lighting. There are several possible DTCs that could be stored.
A3920382060169_22021-01-08. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for when DTC U101300 is logged with sports differential warning lamps or messages.
A4020222058421_32021-01-08. Service bulletin. STEERING; SUSPENSION. This bulletin contains repair instructions for when there is squeaking and creaking when steering or during suspension movement.

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