Service bulletins for the 2021 Audi S6
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.
1155 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| A9023252070332_1 | 2023-06-06. Service bulletin. EXTERIOR LIGHTING:TURN SIGNAL. This bulletin provides information for when the turn signal is unusually loud. |
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| A7223462069350_1 | 2023-06-06. Service bulletin. ELECTRICAL SYSTEM; SEATS. This bulletin provides information for when the starter battery is discharged, and the vehicle cannot be started due to the front adjustment seat switch becoming jammed. |
| A6823422956298_5 | 2023-06-06. Service bulletin. STRUCTURE:INTERIOR PANELS:DASHBOARD. This bulletin contains instructions for dealing with a noise in the dash panel around the MMI display. |
| A5723062055932_9 | 2023-06-06. Service bulletin. PARKING BRAKE; VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. This bulletin provides information for when the central locking/parking brake warning, or alarm sounds, or if there are exterior mirror issues. DTCs B122D29, U122800, and/or B14FF29 may be stored. |
| A4823402067555_3 | 2023-06-06. Service bulletin. STEERING. This bulletin provides and SVM update for when the red steering warning is illuminated in the cluster, and DTC B200049 is stored. |
| A4323722067531_2 | 2023-06-06. Service bulletin. SUSPENSION; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides information for when the messages "Air suspension: system fault" or "Shock absorber system/suspension" is shown in the instrument cluster, and one or more of the following DTCs are stored B200FF0, B200FF1, B200FF3, B200FF4, B200FF5. |
| A0023702021205_7 | 2023-06-06. Service bulletin. EQUIPMENT:OTHER:LABELS. This bulletin provides instructions for ordering replacement Safety Certification labels or VIN plates. |
| A0023692031473_4 | 2023-06-06. Service bulletin. STRUCTURE; EXTERIOR LIGHTING:HEADLIGHTS. This bulletin provides information for when car wash bristles become stuck in the body gap between the headlight and fender. |
| A3923542048671_6 | 2023-06-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides a software update for when "All Wheel Drive Malfunction Message" is displayed in the instrument cluster and DTC U030000 is logged. |
| A2023592070211_1 | 2023-06-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; FUEL SYSTEM, GASOLINE. This bulletin provides information for when an EPCO warning and a fuel system warning are displayed in the instrument cluster with DTC B10581B. |
| A1923392070349_1 | 2023-06-06. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This bulletin advises that a small amount of coolant loss is normal. Otherwise, clean and visually inspect the coolant system in the presence of a small leak to verify if a repair is needed, and then to repair a component if it is verified to have been leaking actively. |
| A0023682066297_2 | 2023-06-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information to Audi technicians regarding the VIN-4-PIN bonus program. |
| A9423632061922_2 | 2023-06-06. Service bulletin. EXTERIOR LIGHTING. This bulletin provides details on how to properly document optical concerns in headlights and taillights for warranty submissions. |
| A912394201818713 | 2023-06-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information for when the customer advises that there is cracking, grinding, rattling, humming, whining, or similar interference. |
| A942364201274916 | 2023-06-06. Service bulletin. EXTERIOR LIGHTING. This bulletin provides information for when there is moisture accumulation in the exterior lights. |
| A9023242054505_4 | 2023-05-05. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. This bulletin provides instructions for when the sunroof glass panel, or the sunroof rollershade does not operate properly. |
| A9023232070020_1 | 2023-05-05. Service bulletin. VISIBILITY:WINDSHIELD. This bulletin provides information for when there are semi-circular marks on the edges of the display glass. |
| A4623432069904_1 | 2023-05-05. Service bulletin. SERVICE BRAKES; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; UNKNOWN OR OTHER. This bulletin provides information for when there are noises when braking, and the brake pad thickness is OK. |
| A4423992056386_9 | 2023-05-05. Service bulletin. STEERING. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked. |
| A4423982056386_8 | 2023-05-05. Service bulletin. STEERING. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked. |
| A2723532069916_1 | 2023-05-05. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides information related to maintaining the 12V Lead-acid or AGM battery when a vehicle is parked for a prolonged period of time. |
| A2023582070153_1 | 2023-05-05. Service bulletin. STRUCTURE; SEATS. This bulletin provides information for when a ticking and/or thumping noise. |
| A8723402068460_3 | 2023-05-05. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin provides information for when the air conditioning system does not cool the cabin and DTCs P053000 and/or P251500 are present. |
| A6623982046229_4 | 2023-05-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on how to document optical defects in order to submit to Warranty. |
| A6023662054480_3 | 2023-05-05. Service bulletin. VISIBILITY:FIXED PANARAMIC ROOF/SKY LIGHT ASSEMBLY. This informational bulletin contains repair information for Panoramic sunroofs. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.