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.

• 10211898May 6, 2022Visibility (wipers, defrost, mirrors). This informational bulletin details on how to get a GFF test plan for A/C compressor replacements.
• 10211916May 3, 2022Equipment. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
• 10210573Apr 28, 2022Steering. This bulletin contains repair instructions for repositioning the intermediate steering shaft when there is squeaking noises from the steering column.
• 10210571Apr 28, 2022Steering. This bulletin contains repair instruction for when DTC C110DF0 is stored and the yellow steering lamp is on.
• 10210569Apr 28, 2022Engine cooling. This bulletin contains instructions for addressing intermediate shaft noises that are heard in the engine compartment.
• 10210568Apr 28, 2022Electrical system, Steering. The steering warning lamp may light up in the instrument cluster with a steering fault due to a software issue. This bulletin describes the steps to perform the update.
• 10210567Apr 28, 2022Steering. This bulletin states how to check for a dynamic steering actuator problem. Solution is under development.
• 10210530Apr 19, 2022Equipment. This bulletin states to create a PSS record when last destinations, favorites, and home/work addresses are sporadically lost.
• 10210528Apr 16, 2022Equipment. This informational bulletin explains why the version information pops-up.
• 10210526Apr 16, 2022Visibility (wipers, defrost, mirrors). This bulletin contains instructions for properly cleaning and removing a musty odor from the heating and ventilation system.
• 10210511Apr 15, 2022Engine cooling. This TSB describes a method for leak detection for R134A and R1234yf refrigerant platforms only.
• 10210527Apr 14, 2022Electrical system. This bulletin contains information on noises from the instrument cluster installation area.
• 10210525Apr 14, 2022Wheels. This bulletin describes the proper procedure to address a clicking or clacking noise from the wheel bearing
• 10210524Apr 14, 2022Equipment. This is an informational bulletin containing information about the outside temperature reading.
• 10210235Apr 8, 2022Transmission and drivetrain. This bulletin contains instructions for when DTC P071800 and P081100 are stored with various transmission issues.
• 10210254Apr 7, 2022Brakes. This technical service bulletin provides troubleshooting for brake noise.
• 10210248Apr 7, 2022Body and structure. This informational bulletin outlines proper warranty procedure for optical defects.
• 10210234Apr 7, 2022Transmission and drivetrain. This bulletin contains repair instructions for resolving a leak on the transmission case.
• 10209454Mar 29, 2022Equipment. Dealer Communication: Vehicle Sales Reporting, Reinstatement, and Audit Policy
• 10209453Mar 29, 2022Suspension. This bulletin describes the proper procedure to address a clicking or clacking noise from the wheel bearing
• 10209452Mar 29, 2022Equipment, Electrical system. This bulletin states to create a PSS record when last destinations, favorites, and home/work addresses are sporadically lost.
• 10209408Mar 29, 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.
• 10209405Mar 25, 2022Electrical system. This bulletin states to create a PSS record when last destinations, favorites, and home/work addresses are sporadically lost.
• 10209275Mar 23, 2022Equipment. This bulletin states to create a PSS when the MMI display turns blue. Workaround provided.
• 10209263Mar 22, 2022Equipment. This bulletin advises that the message "CNG inspection" or "CNG mode active" with no relevant DTCs is currently being investigated. Techs should create a PSS record when this concern is reported by a customer.
• 10209238Mar 17, 2022Transmission and drivetrain. This bulletin contains instructions for when DTC P071800 and P081100 are stored with various transmission issues.
• 10209266Mar 16, 2022Equipment. This informational bulletin contains instructions about updating the navigation map.
• 10209245Mar 16, 2022Suspension. This bulletin contains information on how to fix a clunking or rattling noise heard from the rear suspension when the vehicle is driven over bumps.
• 10209242Mar 15, 2022Suspension. This informational bulletin contains knowledge on why oil may appear on one or several of the shock absorbers.
• 10209111Mar 14, 2022Equipment. This special notice is to inform dealers to return the parts listed and only order the successor parts going forward.
• 10209107Mar 9, 2022Electrical system. This bulletin contains repair instructions for when DTC B145504 with symptom code 7340800.
• 10208908Mar 7, 2022Equipment. This bulletin describes a condition in which the USB ports may become damaged during use, and the procedure to repair.
• 10208906Mar 3, 2022Equipment. This bulletin contains repair instructions for when it is not possible to establish a bluetooth connection with DTC U110300.
• 10208894Mar 3, 2022Engine cooling. This bulletin contains instructions for using the UV additive to find engine oil leaks.
• 10208493Feb 23, 2022Equipment, Electrical system. This bulletin contains ODIS instructions for DTC B200096 or B200000 with an SOS malfunction warning displayed in the instrument cluster.
• 10208481Feb 22, 2022Equipment. This bulletin contains repair instructions for proper transport mode deactivation (DTC U142100, DTC P169A00, and U13EB00 ).
• 10208458Feb 22, 2022Equipment. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
• 10208224Feb 10, 2022Lane departure, Electrical system. A software malfunction in the MMI may cause the steering correction setting for the lane assist to not be available. A solution is currently under development, and the bulletin requests that technicians submit a PSS record for review.
• 10208209Feb 10, 2022Air bags. This bulletin contains instructions for when the airbag warning is illuminated and DTC B13BCF2 is stored.
• 10208261Feb 8, 2022Engine cooling. This bulletin describes various conditions that may have arisen due to a leak in the corrugated windshield washer hose, and the associated repair.
• 10207820Feb 7, 2022Steering, Electrical system. The steering warning lamp may light up in the instrument cluster with a steering fault due to a software issue. This bulletin describes the steps to perform the update.
• 10207819Feb 1, 2022Steering. 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.
• 10207210Jan 31, 2022Brakes. This informational bulletin provides diagnostic information for brake conditions.
• 10207207Jan 31, 2022Wheels. This bulletin provides information regarding vibrations or movement that are felt in the wheel.
• 10207160Jan 31, 2022Equipment, Forward collision avoidance. This bulletin states to create a PSS record for when the star button is programmed to the front camera views and is lost after a bus sleep cycle.
• 10207152Jan 31, 2022Electrical system, Equipment. This bulletin contains ODIS instructions for DTC B200096 or B200000 with an SOS malfunction warning displayed in the instrument cluster.
• 10207150Jan 31, 2022Equipment. This bulletin provides troubleshooting tips for logging in to Audi Connect and Key User Pairing
• 10207122Jan 31, 2022Equipment. This bulletin advises on the diagnosis and determination of warranty coverage for cracks appearing on the Virtual Cockpit screen.
• 10207121Jan 31, 2022Brakes, Equipment. This technical service bulletin provides troubleshooting for brake noise.
• 10207113Jan 31, 2022Equipment. This bulletin describes a concern where the screen of the virtual cockpit has a white sheen and the associated repair process.

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