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Service bulletins for the 2021 Audi S8

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.

1150 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
A9023982069331_12023-02-07. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides information on when the message "Instrument cluster: fault. Limited warning messages. Please contact workshop" DTC B200096 may be stored.
A9123652069349_12023-02-07. Service bulletin. BACK OVER PREVENTION. This bulletin provides instructions for when the radio station sporadically or permanently cannot be changed using the rear seat remote (SCON).
A9023952069055_32023-02-07. Service bulletin. BACK OVER PREVENTION:DISPLAY FUNCTION. This bulletin contains instructions for when the head up display cannot be turned on, and the message "the selected system is currently unavailable" is displayed periodically on the MMI display. The 12v battery may be drained.
DC_Alternator_52023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
DC_Alternator_42023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
DC_Alternator_32023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
DC_Alternator_62023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
A6623942049680_22023-02-07. Service bulletin. STRUCTURE. This bulletin provides instructions for when the exterior trim has spots.
A6423862047061_42023-02-07. Service bulletin. VISIBILITY:WINDSHIELD. This bulletin provides instructions for when faint images appear on the windshield from the production sticker, or an image of the suction cups used to install the windshield in production.
A9023922063502_62023-02-07. Service bulletin. LANE DEPARTURE: ASSIST. This bulletin provides instructions for when the lane change assist/intersection assist is sporadically not working and DTC B200FF9 is present in either the lane change assist control modules, or the corner radar control modules.
A8723382068460_22023-02-07. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides instructions for when the air conditioning system does not cool the cabin and DTCs P053000 or P251500.
A6623952060333_32023-02-07. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; STRUCTURE. This bulletin provides instructions when the black optic exterior trim is discolored.
A4423972022563_22023-02-07. Service bulletin. VEHICLE SPEED CONTROL. This bulletin provides instructions for when a vibration is felt in the floor, seat, footwell, pedals or steering wheel while driving at highway speeds from 55 - 80 mph.
A1923342069248_12023-02-07. Service bulletin. BACK OVER PREVENTION; EQUIPMENT:ELECTRICAL. This bulletin provides instructions for when the red coolant temperature is displayed in the instrument cluster and the engine fans are running bu the coolant temperature gauge does not display an excessively high temperature, or the MIL may be illuminated with DTCS P218100, P1BB400.
DC_Alternator_22023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
A9123612062115_92023-02-07. Service bulletin. BACK OVER PREVENTION:DISPLAY FUNCTION. This bulletin provides instructions for when a customer states that after an over-the-air navigation map update the navigation system is permanently initializing or the navigation map is incomplete or corrupt and DTC B126CF0 and/or B126CF1 may be stored in the electronics control module.
A9123592036576_72023-02-07. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin advises that the MMI screen may freeze, or go blank and then restart when a special character like a symbol or emoticon is used in the name field for contact(s).
A8023122062583_22023-02-07. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin provides instructions for when the customer advises that there is insufficient or uneven cabin heating from the HVAC system.
A5123262068999_12023-02-07. Service bulletin. STRUCTURE. This bulletin provides instruction for when a customer advises that a visible line of corrosion is forming in the roof.
A4623402069078_12023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions for when the zirconium inserts found to be not firmly attached during service work.
A2023522065287_62023-02-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). This bulletin provides instructions for when the MIL is on and DTC P044200 and/or P045600 is stored in the ECM.
DC_Alternator2023-01-06. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Support for Customers Affected by Alternator Back-order
DC_RECALLS2023-01-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SAFETY RECALLS, COMPLIANCE RECALLS and STOP SALES
A5722002022032102023-01-06. Service bulletin. LATCHES/LOCKS/LINKAGES:DOORS:LOCK. This technical service bulletin provides troubleshooting information for the vehicle locking system.
A9022842064983_52023-01-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides directions for when there is a pixel fault in the instrument cluster.

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