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Service bulletins for the 2020 Audi A3

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
A0020372059437_12020-06-04. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY. The informational bulletin explains why during COVID-19 there is winter-blend fuel during a warmer season and causing some issues.
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.
SM 25-20202020-05-07. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
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.
20TechRefREV4202020-05-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. The Pre-Delivery Inspection Technician Reference Document is designed to be a resource used in hand with the Pre-Delivery Inspection Checklist (PDI). The PDI Checklist has been simplified to make the process more efficient, and in doing so, this document has been created to be used as a reference for checklist items that may have additional information. On the PDI Checklist, you find that certain items have been notated with an asterisk symbol (*), this lets you know that additional information can be found in this Technician Reference Document.
A6420722047061_22020-05-07. Service bulletin. STRUCTURE. This bulletin contains a cleaning procedure from leftover residue from suction cups or labels.
A4420762059234_12020-05-07. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. This bulletin contains information on why the TPMS message 'Tire pressure: malfunction!' appears without DTCs.
A3720952047609_42020-05-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair instructions for when a 'vehicle eletronics malfunction' message appears in the display (DTC B116229).
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.
A0120532058491_22020-05-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair instructions for when there is DTC P310B00 and the engine warning lamp is on with running issues.
A5120132009967_12020-04-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions for vehicle inspection, protection removal, and detailing.
20A3S3RS3TECHREP2020-04-02. Service bulletin. UNKNOWN OR OTHER. Reminders Section: Changed Testing verbiage to: - Guided Fault Finding must be used, session must be completed and sent to GFF Paperless - Total PDI Test must be completed prior to any other work involving the scan tool (special function tab -> Total PDI Test) - Start Guided Fault Finding with the engine running to insure control modules in transport mode are identified
A3420442047609_32020-04-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair instructions for when a "vehicle eletronics malfunction" message appears in the display (DTC B116229).
SM 13-20202020-04-02. Service bulletin. STRUCTURE. This special notice is to inform dealers to return the part listed and order the superseded part number going forward
20TIREPRSCHRT032020-04-02. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. Added tire pressures for SQ7, SQ8, & RS Q8
20AUUSMnt226202020-03-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Standard Maintenance Section: Plenum chamber and water drain valves: Check for dirt. ADDED: A6 all models, A7 all models
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.
A8720042058598_12020-03-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This bulletin contains repair instructions for when the customer feels a flow of warm air from the panel vents or footwell when the convertible top is open and the HVAC system is turned off intermittently.
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.
A3420432047609_22020-03-05. Service bulletin. ELECTRONIC STABILITY CONTROL (ESC). This bulletin contains repair instructions for when a 'vehicle eletronics malfunction' message appears in the display (DTC B116229).
A0120432058491_12020-03-05. Service bulletin. EXTERIOR LIGHTING:HAZARD FLASHING WARNING LIGHTS:UNIT; ELECTRICAL SYSTEM. This bulletin contains repair instructions for when there is DTC P310B00 and the engine warning lamp is on with running issues.
20AUUSMaint02202020-03-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Standard Maintenance Section: Connected Battery Box: ADDED: SQ7, SQ8 Additional Maintenance Items section: Fragrance Cartridges: ADDED: SQ7, SQ8 Rear axle, quattro® Sport - Change ATF and differential oil: ADDED: SQ7, SQ8 Spark plugs - Replace every 30,000 miles: ADDED: SQ7, SQ8 OIL CAPACITY CHART: ADDED: SQ7, SQ8 CHANGED: Castrol Oil to 'Audi High Performance Genuine Engine Oil'
A9120342042506_92020-03-05. Service bulletin. EQUIPMENT. This technical service bulletin explains how to determine the status of activation keys (that affect the function of Audi drive select, cruise control, navigation, Bluetooth, smartphone interface and voice recognition), and how to update them.
A3520372058504_12020-03-05. Service bulletin. POWER TRAIN. This bulletin contains repair instructions for when DTC P173500 and/or P173600 are logged with a shuddering transmission or messages or Limp Home Mode.

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