2021 Audi A4 Technical Service Bulletins

1,057 technical service bulletins (TSBs) are on record for the 2021 Audi A4. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10227171Nov 17, 2022Electrical system, Equipment. This bulletin contains guidance for submitting warranty wiring repairs.
• 10227022Nov 17, 2022Electrical system. This bulletin provides directions when the SOS malfunction warning is displayed in the instrument cluster accompanied by DTC B200096 or DTCB200000.
• 10227162Nov 8, 2022Electrical system, Equipment. This bulletin describes the ways in which a variety of Audi vehicles connect to Apple Wireless CarPlay, and the methods to troubleshoot connection concerns.
• 10227019Nov 7, 2022Equipment. This bulletin describes an error which may arise due to a bug in the software of a customer's phone, which causes the Apple CarPlay screen to appear blank, and for audio drop-outs.
• 10227012Nov 4, 2022Equipment. This bulletin states that due to a software malfunction in Apple iOS Version 16.0.x there are restrictions with bluetooth connection.
• 10226909Nov 2, 2022Equipment. This bulletin provides troubleshooting tips for logging in to Audi Connect and Key User Pairing
• 10226805Nov 2, 2022Wheels. This bulletin contains repair instructions for noises when in reverse or vibrations/humming/droning or rubbing when fully turning the wheel.
• 10226247Nov 2, 2022Electrical system. This bulletin provides instructions to address DTCs P071800, P276800, P071800, and P276800.
• 10225529Oct 27, 2022Engine cooling. This bulletin advises on the repair recommendation for a squeaking, grinding, or tweeting noise coming from the engine compartment. DTC P2BA300 may be stored.
• 10225550Oct 19, 2022Lane departure, Equipment. This bulletin contains instructions for when the nav files are corrupted during an update.
• 10225562Oct 18, 2022Equipment. This bulletin provides instructions on how to address DTC U014000, or DTC U110100.
• 10222137Sep 28, 2022Equipment. This bulletin provides information on how to properly address DTC U112300.
• 10222109Sep 23, 2022Equipment. The message "SOS Malfunction - Emergency call malfunction, please contact service" may appear erroneously in the presence of DTCs B129B11 and/or DTC B239C11. No repairs are necessary at this time.
• 10222101Sep 23, 2022Electrical system. This bulletin contains ODIS instructions for DTC B200096 or B200000 with an SOS malfunction warning displayed in the instrument cluster.
• 10220396Sep 16, 2022Electrical system. This bulletin provides instructions on how to address DTC U014000, or DTC U110100.
• 10220395Sep 16, 2022Electrical system. This bulletin provides information on how to properly address DTC U112300.
• 10220388Sep 13, 2022Equipment. This bulletin offers further guidance regarding diagnosis and system information for vehicles with a 48 V electrical system.
• 10220366Sep 13, 2022Equipment. This bulletin provides detailed instructions for diagnosis when DTC P0A7D00 is present.
• 10218681Aug 23, 2022Electrical system. This bulletin advises that if the configuration wizard in the MMI displays upon startup, the customer can either complete the configuration or deactivate via settings.
• 10218600Aug 19, 2022Electrical system. This bulletin contains information for diagnosing the Start/Stop system.
• 10217895Aug 11, 2022Brakes. This technical service bulletin provides troubleshooting for brake noise.
• 10217691Aug 11, 2022Brakes, Engine cooling. This bulletin contains repair instructions for when the vehicle sporadically does not start and there is a hard brake pedal concern.
• 10217907Aug 9, 2022Electrical system. This bulletin advises to replace the instrument cluster after providing photos in instances of a pixel fault in the virtual cockpit.
• 10217903Aug 9, 2022Body and structure. This bulletin advises that noises from the trunk lid struts heard during operation are normal and no repair is required.
• 10217636Aug 2, 2022Engine cooling, Equipment. This bulletin advises that techs should document the specific o-ring seal that is replaced if a refrigerant leak is found and caused by the o-ring seal.
• 10216840Jul 29, 2022Transmission and drivetrain. This bulletin provides instructions to address DTCs P071800, P276800, P071800, and P276800.
• 10216491Jul 19, 2022Electrical system, Equipment. This bulletin contains repair information for when there area cables visible in the passenger compartment of the vehicle.
• 10216490Jul 19, 2022Equipment, Steering. This bulletin explains that the steering wheel may warm up while being held leading to the impression that he steering wheel isn't heating evenly.
• 10216047Jul 14, 2022Visibility (wipers, defrost, mirrors). This bulletin provides instructions for repairing a vehicle with a washer solvent light on but the level is correct.
• 10216043Jul 14, 2022Visibility (wipers, defrost, mirrors). This bulletin advises that the window washer pump may become blocked due to frozen washer fluid; one more more DTCs may be present: DTCs B126101, B126111, or B126113.
• 10216017Jul 14, 2022Visibility (wipers, defrost, mirrors). This bulletin advises to lubricate the exterior folding mirrors in instances when a noise is heard from the mirrors.
• 10216011Jul 13, 2022Suspension. The bulletin contains diagnosis information for noises on the front end of the vehicle.
• 10216015Jul 12, 2022Electrical system, Suspension. This bulletin provides steps to address DTCs B200FF0, B200FF1, B200FF3, B200FF4, and B200FF5.
• 10216044Jul 5, 2022Visibility (wipers, defrost, mirrors), Equipment. This bulletin provides instructions on how to properly clean exterior glass.
• 10214842Jun 29, 2022Equipment. This bulletin contains repair instructions for proper transport mode deactivation (DTC U142100, DTC P169A00, and U13EB00 ).
• 10214808Jun 27, 2022Equipment. This bulletin states to create a PSS record when last destinations, favorites, and home/work addresses are sporadically lost.
• 10214737Jun 9, 2022Electrical system, Other or unknown. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
• 10214476Jun 9, 2022Brakes. This bulletin contains repair instructions for when the vehicle sporadically does not start and there is a hard brake pedal concern.
• 10214468Jun 9, 2022Electrical system, Suspension. This bulletin contains repair instructions for DTC B200FF0.
• 10214463Jun 9, 2022Electrical system, Suspension. This bulletin contains a software update that corrects the control module configuration and addresses a warning light.
• 10214454Jun 7, 2022Equipment. This bulletin describes a reporting program for Audi certified technicians.
• 10214751Jun 6, 2022Tires, Wheels. This bulletin advises to ensure that the correct wheels and tires are installed in instances where the Audi pre sense restricted message appears in the absence of DTCs.
• 10214792Jun 3, 2022Equipment. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
• 10214780Jun 3, 2022Electronic stability control, Other or unknown. This Pending service solutions requests that technicians create a PSS record for instances where a yellow check engine lamp is intermittently displayed upon start with DTC U014000or U110100 is sporadically stored. A software update is being developed; component replacement is not necessary.
• 10214768Jun 3, 2022Equipment. This bulletin describes the registering and pairing process required to utilize the SIM card to activate 3rd generation Audi connect services.
• 10214475Jun 3, 2022Brakes. This technical service bulletin provides troubleshooting for brake noise.
• 10212933May 27, 2022Wheels, Tires. This bulletin advises to ensure that the correct wheels and tires are installed in instances where the Audi pre sense restricted message appears in the absence of DTCs.
• 10212144May 23, 2022Equipment. This informational bulletin contains instructions for when the message "Audi pre sense currently restricted. See owner's manual" is displayed in the instrument cluster without DTCs.
• 10212114May 20, 2022Brakes. This bulletin states that moisture has been identified on one of the rear brake calipers; this fluid is from the production process of the components and does not require repair.
• 10211721May 10, 2022Steering. This bulletin provides information regarding vibrations or movement that are felt in the wheel.

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