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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

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
A2723482069747_12023-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information for when the vehicle does not start due to a drained battery.
A9623822056019_22023-03-06. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE. This bulletin provides instructions for when the anti-theft alarm has gone off for no reason, or did not go off at all. No DTCs are stored.
A9123722052299_72023-03-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information to address when the Audi connect "User management" screen is greyed out, and the customer cannot complete the key user pairing. OR the SOS emergency button is red or flashing read. DTCS P169A00 and U13EB00 are present in the system.
A9023042069416_12023-03-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information for when the 12V socket and/or the cigarette lighter are not working.
DC_Alternator2023-01-06. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Support for Customers Affected by Alternator Back-order
A9722892061976_32022-12-06. Service bulletin. ELECTRICAL SYSTEM:WIRING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains guidance for submitting warranty wiring repairs.
A9122472062466_32022-12-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin describes the ways in which a variety of Audi vehicles connect to Apple Wireless CarPlay, and the methods to troubleshoot connection concerns.
A0022582045316_62022-09-01. Service bulletin. ELECTRICAL SYSTEM:IGNITION. This bulletin contains information for diagnosing the Start/Stop system.
A4622332051095_72022-07-01. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
DCMobileService2022-06-07. Service bulletin. ELECTRICAL SYSTEM. Mobile Service Opportunity – Battery Module Control Unit Software 93N6 + other campaigns
A9022582059335_32022-05-05. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains information on noises from the instrument cluster installation area.
A4822232053869_52022-04-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair instructions for when DTC B145504 with symptom code 7340800.
A0021552011732122022-01-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains general instructions for software updates.
A9721822061976_22021-12-07. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin contains guidance for submitting warranty wiring repairs.
SM 74-20212021-10-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
A9121312061028_32021-10-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin explains and troubleshoots when Audi connect does not have a green SOS light.
A9121142053916_32021-08-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This informational bulletin contains instructions for when a non-plus sized iPhone heats up while wirelessly charging and the CarPlay screen may appear frozen.
A9121042024323_82021-06-03. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE. This bulletin contains technical information regarding when the parking aid sporadically warns of obstacles that don't exist or it is inoperative/constant warning.
A9021982059335_22021-05-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM. This bulletin contains information on noises from the instrument cluster installation area.
A9021992063038_12021-05-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM. This informational bulletin explains why the version information pops-up.
Dealer 24GJ2021-05-06. Service bulletin. ELECTRICAL SYSTEM. Audi is providing an Engine Control Module (ECM) software update to address elevated tailpipe emissions that were found during vehicle testing. This software will also improve drivability and provide other diagnostic improvements.
Circular 24GJ2021-05-06. Service bulletin. ELECTRICAL SYSTEM. Audi is providing an Engine Control Module (ECM) software update to address elevated tailpipe emissions that were found during vehicle testing. This software will also improve drivability and provide other diagnostic improvements.
A5721752022032_92021-05-06. Service bulletin. LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. This technical service bulletin provides troubleshooting information for the vehicle locking system.
A9621632059201_42021-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information for when the messages appear in the instrument cluster about the high beam assist and/or traffic sign detection with DTC C12B3FD.
A9121782050565_32021-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains general software update instructions for vehicles with PR Code 7UH.

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