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Service bulletins for the 2018 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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
A8720052010146152020-05-07. Service bulletin. EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:LPG SYSTEMS:WATER HEATER. This bulletin contains instructions for properly cleaning and removing a musty odor in the vehicle.
A4320342059363_12020-05-07. Service bulletin. SUSPENSION. This bulletin contains repair instructions for DTC C1260F0 and U112100 with an air suspension malfunction warning.
A2120352059258_12020-05-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This bulletin contains instructions for diagnosing a damaged turbocharger and calling TAC.
A1520342053278_32020-05-07. Service bulletin. ENGINE AND ENGINE COOLING. 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.
AWA 20-052020-05-07. Service bulletin. ENGINE AND ENGINE COOLING. This Document informs dealers on the new rear oxygen sensor warranty extension for 2016-2018 S6, S7, RS7, A8, and S8 vehicles
A9020452059335_12020-05-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information on noises from the instrument cluster installation area.
A9020442032113_32020-05-07. Service bulletin. ELECTRICAL SYSTEM. This information bulletin contains a background on the outside air temperature reading.
A9620502059202_12020-05-07. Service bulletin. LANE DEPARTURE: LANE KEEP: STEERING ASSIST; STEERING:ELECTRIC POWER ASSIST SYSTEM. This informational bulletin contains instructions on explaining the new driver assist systems and lane center guidance.
A9420222059217_12020-05-07. Service bulletin. EXTERIOR LIGHTING:HAZARD FLASHING WARNING LIGHTS. This bulletin contains instructions for when the hazard warning lights activate on their own and may not be able to be turned off.
A6420722047061_22020-05-07. Service bulletin. STRUCTURE. This bulletin contains a cleaning procedure from leftover residue from suction cups or labels.
SM 21-20202020-05-07. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
A0120542014753112020-05-07. Service bulletin. FUEL SYSTEM, GASOLINE. This bulletin contains instructions for when to add gasoline additives for cleaning the injectors.
SM 22-20202020-05-07. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
A5120132009967_12020-04-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions for vehicle inspection, protection removal, and detailing.
SM 17-20202020-04-02. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the part listed if it meets the criteria provided.
A9420202017806132020-04-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information regarding when the message 'Vehicle lights: malfunction' appears with DTC 03280, 01800, or B126AF0.
A4820852053869_32020-04-02. Service bulletin. STEERING. This bulletin contains repair instructions for when DTC B145504 with symptom code 7340800. 48 Steering wheel heater is not working, DTC B145504 is stored in the steering column control module.
A2720352058831_12020-04-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains a software update for DTC P0CA700 or U046900.
A0120462014753102020-04-02. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. This bulletin contains instructions for when to add gasoline additives for cleaning the injectors.
SM 14-20202020-04-02. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the parts listed and order the superseded part number going forward
A9120392018187112020-03-05. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This bulletin contains inspection guidelines for radio interference that causes noises in the speaker.
A4420732056386_32020-03-05. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked.
A0120442054893_22020-03-05. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY; SERVICE BRAKES, HYDRAULIC:FLUID. This bulletin contains instructions for documenting the 'Please reduce Oil Level' message in the instrument cluster potentially with an Engine Warmup request.
18AUUSMaint02202020-03-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. OIL CHART SECTION: CHANGED - Castrol Oil to 'Audi approved XXXX-Refer to the Parts Catalog' for all models.
A4020002048266_72020-03-05. Service bulletin. EQUIPMENT. This bulletin contains repair instructions for a rumbling/creaking noises from the front of the vehicle.

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