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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
A9320322049384_32020-09-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair instructions for replacing a HV battery.
A6620662060333_12020-09-03. Service bulletin. STRUCTURE. This bulletin contains instructions for when the black optic trim is discolored.
A1720092059366_52020-09-03. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for an "oil minimum" message and low oil on the dipstick.
A9320312060233_12020-08-10. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair instructions for when the HV battery charging does not work when the timer is used. Create a PSS record if the conditions are met.
A4020132059474_22020-08-06. Service bulletin. SUSPENSION:FRONT:SHOCK ABSORBER; EQUIPMENT. This bulletin contains instructions for correcting buffer stop noise (rumbling or squeaking from the front end).
91Y3circularREV12020-08-06. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM:SOFTWARE. The infotainment system privacy setting 'Allow data transmission' may, in unfavorable circumstances, change without user intervention. As a result, the vehicle sends data although this function was previously deactivated manually. Criteria 04 instructions added.
A9020592058750_22020-08-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains a software update that address a permanent chime after a cancelled emergency assist event.
A9020582055906_22020-08-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains PSS instructions for when the Audi Adaptive light, pre sense malfunction, and the Adaptive Cruise Assist does not work.
A3920342060169_12020-08-06. Service bulletin. EQUIPMENT; POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT. This bulletin contains instructions for when DTC U101300 is logged with sports differential warning lamps or messages.
A7220252060085_12020-08-06. Service bulletin. SEATS:FRONT ASSEMBLY:POWER ADJUST; ELECTRICAL SYSTEM. This bulletin contains a software update that addresses the sporadic issue where the front seats move into an implausible position.
A1720062028440_52020-08-06. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE:FUEL LEVEL FLOAT/SENSOR/SENDING UNIT. This informational bulletin explains when the range display is empty in the on-board computer.
Bulletin91X4REV12020-07-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. The infotainment system privacy setting 'Allow data transmission' may, in unfavorable circumstances, change without user intervention. As a result, the vehicle sends data although this function was previously deactivated manually. Added claiming instructions in the event the update has to be performed using the Red Engineering Menu (REM). Updated work instructions. Removed A8 models from applicable vehicles.
A1920042025303_12020-07-07. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for identifying and mixing factory fill coolants.
A9020532059889_12020-07-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for creating a PSS when DTC C12B3FB or B200FF3 appears with an Audi Adaptive light or Adaptive Driver Assistant malfunction displayed in the instrument cluster.
A1720052059366_42020-07-07. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for an "oil minimum" message and low oil on the dipstick.
A1720042059366_32020-07-07. Service bulletin. ENGINE. This bulletin contains instructions for an "oil minimum" message and low oil on the dipstick.
Dealer 91Y32020-07-07. Service bulletin. ELECTRICAL SYSTEM. The infotainment system privacy setting 'Allow data transmission' may, in unfavorable circumstances, change without user intervention. As a result, the vehicle sends data although this function was previously deactivated manually.
Circular 91Y32020-07-07. Service bulletin. ELECTRICAL SYSTEM. The infotainment system privacy setting 'Allow data transmission' may, in unfavorable circumstances, change without user intervention. As a result, the vehicle sends data although this function was previously deactivated manually.
A9620532059201_32020-07-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information for when the messaegs appear in the instrument cluster about the high beam assist and/or traffic sign detection with DTC C12B3FD.
A9120802053776_62020-07-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains a software update and test plan for DTCs C12EBF1 or C12EB92.
A9020512058077_42020-07-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains instructions for determining unexpected Audi pre sense interventions.
A5720682055932_52020-07-07. Service bulletin. EQUIPMENT. This bulletin contains a software update for DTC B122D29 or U122800 and a potential part replacement.
A9720752056234_32020-07-07. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, GASOLINE. This bulletin contains repair instructions for when the fuel guage does not read full after filling up or it reads as empty with various DTCs.
A9120772056076_82020-07-07. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This bulletin contains instructions for when there is no diagnostics communication with the ConBox.
A9120752057715_32020-07-07. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin states that dor DTC U101400 to not perform any repairs and that this does not affect the customer or their experience.

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