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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
TSB_2038689_92025-04-04. Service bulletin. SUSPENSION. This bulletin provides information regaridng securting the bump stops when there are noises form the rear of the vehicle.
TSB_2018194_122025-04-04. Service bulletin. SUSPENSION. This bulletin serves as an assessment aid for shock absorber leaks.
TSB-2054480_52025-03-19. Service bulletin. STRUCTURE:BODY. This bulletin provides repair information for Panoramic sunroofs.
TSB-2076945_12025-03-19. Service bulletin. STRUCTURE:BODY. This bulletin provides information about leather care and seat repair.
Audi-closures-202502182025-03-19. Service campaign. UNKNOWN OR OTHER. Service Action and UPDATE Closure Notice
TSB-2061904_62025-03-19. Service bulletin. STEERING. This TSB provides information when the warning message "Steering lock for active steering failed.
A5325102043016_42025-02-05. Service bulletin. ELECTRICAL SYSTEM. This TSB provides information when there are visible wires in the interior.
A8725982064077_62025-02-05. Service bulletin. STRUCTURE:BODY. This bulletin provides information when the air conditioning cooling output is insufficient; leak on air conditioning system evaporator.
A9125072061028_62025-02-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there are no services in the MMI and the SOS LED does not turn green after PDI.
A6625162049680_32025-02-05. Service bulletin. STRUCTURE:BODY. This TSB provides information when the exterior rubber trim is spotted.
A4025932076605_12025-02-05. Service bulletin. SUSPENSION. This TSB provides informaiton pertaining to noises from the guide link bush.
A4025922076604_12025-02-05. Service bulletin. SUSPENSION. This TSB provides informaiton about locating noises coming from suspension.
A4025902018194_112025-02-05. Service bulletin. SUSPENSION. This bulletin is an assessment aid for shock absorber leaks.
A3725312074822_22025-02-05. Service bulletin. SUSPENSION. This bulletin provides information when noises from wheel input shaft/drive shaft are reported.
A2725852075177_32025-02-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informatin when there is a Starter Generator mechanical fault P2BA300 - 4.0L.
Dealer 27BQ_REV102025-02-05. Service campaign. UNKNOWN OR OTHER. Under this service action, Audi dealers will replace the starter-alternator in affected vehicles at no cost to owners. A defective starter-alternator may inhibit start/stop functionality which could increase CO2 and other emissions while the vehicle is stopped. Emissions still remain within certification standards. Updated affected vehicle chart, owner notification letters, parts and claiming sections to reflect the addition of the final wave of vehicles. Updated note in Section C work instructions.
Circular 27BQ_REV102025-02-05. Service campaign. UNKNOWN OR OTHER. Under this service action, Audi dealers will replace the starter-alternator in affected vehicles at no cost to owners. A defective starter-alternator may inhibit start/stop functionality which could increase CO2 and other emissions while the vehicle is stopped. Emissions still remain within certification standards. Updated affected vehicle chart, owner notification letters, parts and claiming sections to reflect the addition of the final wave of vehicles. Updated note in Section C work instructions.
A9125002076466_12025-02-05. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information to check in the event that a customer complains about Apple CarPlay/Android Auto.
A4825772065978_42025-02-05. Service bulletin. STEERING. This bulletin provides information when the steering wheel does not heat up sufficiently.
A4025872047920_112025-02-05. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when noises from the front end and dash panel, rolling noises are noted.
A4025862061464_92025-02-05. Service bulletin. POWER TRAIN. This bulletin provides information when a cracking noise can be heard from the vehicle front or rear end while changing direction.
Dealer 27BQ_REV92025-01-07. Service campaign. UNKNOWN OR OTHER. Under this service action, Audi dealers will replace the starter-alternator in affected vehicles at no cost to owners. A defective starter-alternator may inhibit start/stop functionality which could increase CO2 and other emissions while the vehicle is stopped. Emissions still remain within certification standards. Updated affected vehicle chart, owner notification letters, parts and claiming sections to reflect the addition of the final wave of vehicles. Updated criteria in parts section.
Dealer 27BQ_REV82025-01-07. Service campaign. UNKNOWN OR OTHER. Under this service action, Audi dealers will replace the starter-alternator in affected vehicles at no cost to owners. A defective starter-alternator may inhibit start/stop functionality which could increase CO2 and other emissions while the vehicle is stopped. Emissions still remain within certification standards. Updated affected vehicle chart, owner notification letters, parts and claiming sections to reflect the addition of the final wave of vehicles. Updated work instructions (battery charger must be connected before checking starter/generator software version).
Circular 27BQ_REV92025-01-07. Service campaign. UNKNOWN OR OTHER. Under this service action, Audi dealers will replace the starter-alternator in affected vehicles at no cost to owners. A defective starter-alternator may inhibit start/stop functionality which could increase CO2 and other emissions while the vehicle is stopped. Emissions still remain within certification standards. Updated affected vehicle chart, owner notification letters, parts and claiming sections to reflect the addition of the final wave of vehicles. Updated criteria in parts section.
Circular 27BQ_REV82025-01-07. Service campaign. UNKNOWN OR OTHER. Under this service action, Audi dealers will replace the starter-alternator in affected vehicles at no cost to owners. A defective starter-alternator may inhibit start/stop functionality which could increase CO2 and other emissions while the vehicle is stopped. Emissions still remain within certification standards. Updated affected vehicle chart, owner notification letters, parts and claiming sections to reflect the addition of the final wave of vehicles. Updated work instructions (battery charger must be connected before checking starter/generator software version).

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