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.

• 10240212Jul 17, 2023Visibility (wipers, defrost, mirrors). This bulletin provides information for when the washer solvent level warning is on.
• 10240160Jul 17, 2023Equipment. This bulletin provides information for when the Apple CarPlay screen is blank.
• 10238397Jun 30, 2023Seat belts. This bulletin provides information for when the seatbelt is hard to latch in the belt buckle.
• 10238396Jun 30, 2023Air bags. This bulletin provides information for when the airbag warning light is on and DTC B13BCF2 is stored in the airbag control module.
• 10238358Jun 29, 2023Steering. This bulletin provides information for when noises are heard inside the vehicle via the intermediate steering shaft.
• 10238357Jun 29, 2023Steering. This bulletin provides information for when the yellow steering malfunction light is on in the cluster and DTC C110DF0 is stored in the active steering module.
• 10238354Jun 29, 2023Steering. This bulletin provides information for when there is an active steering malfunction with DTC B200FF0.
• 10238318Jun 29, 2023Steering. This bulletin provides information for when there are squeaking noises from the rubber boot of the intermediate steering shaft.
• 10238235Jun 20, 2023Brakes. This bulletin provides information for when one or more DC is stored in the ABS control unit related to the parking switch; DTC C100C07 and/or C100C29.
• 10238233Jun 20, 2023Steering. This bulletin provides information for instances where the steering wheel leather is damaged.
• 10238289Jun 16, 2023Equipment, Electrical system. This bulletin provides information for when wireless charging with the Audi Phone Box does not work.
• 10238273Jun 15, 2023Engine cooling. This bulletin provides information on checking for debris when replacing an engine.
• 10238169Jun 13, 2023Body and structure. This bulletin provides information for when the luggage compartment lid cannot be closed using the button(s) in the luggage compartment trim.
• 10238189Jun 12, 2023Electrical system, Equipment. This bulletin provides information for when the parking aid sensor bracket(s) separate from the rear bumper.
• 10238194Jun 8, 2023Exterior lighting. This bulletin provides detailed information on the proper documentation of optical concerns for headlights and taillights.
• 10238182Jun 8, 2023Electrical system, Equipment. This bulletin provides information for when semi circular marks appear on the edges of the virtual cockpit display.
• 10238181Jun 7, 2023Electrical system. This bulletin provides instructions for when the Driver Information System is blank.
• 10238186Jun 6, 2023Equipment, Electrical system. This bulletin provides information for when the message "Audi connect installation: error during installation" is shown in the drop down menu of the MMI.
• 10238184Jun 6, 2023Equipment, Electrical system. This bulletin provides a software update for instances where the integrated toll module settings can no longer be accessed via the MMI, or the Audi smartphone interface can only be used wired. No relevant DTCs have been stored, and 91DZ has been performed.
• 10238159Jun 6, 2023Electrical system. This bulletin provides additional diagnostic instructions for when the vehicle does not start due to a drained 12v battery (A).
• 10238191Jun 5, 2023Electrical system, Equipment. This bulletin provides a software update for instances where saved addresses (including the home address), favorites, last destinations, and/or icon and shortcut order are lost sporadically, the MMI screen turns blue, or becomes stuck on the welcome screen.
• 10238172Jun 5, 2023Electrical system. This bulletin provides information regarding the Audi advanced key.
• 10237395May 24, 2023Equipment. This bulletin provides information on the operation of the entry/exit assistance feature.
• 10237017May 22, 2023Visibility (wipers, defrost, mirrors). This bulletin provides instructions for when the washer level warning is on but the reservoir is full.
• 10236617May 19, 2023Electrical system. This bulletin provides an SVM update for when the warning light for the suspension appears in the instrument cluster, and the SVM registers an unknown event when carrying out "Check control unit configuration" and cannot be automatically parameterized.
• 10236615May 19, 2023Electrical system. This bulletin advises that if the warning lamp for the damper control in the instrument cluster is on, and DTC B200FF0 is stored to delete the DTC and perform suspension basic settings.
• 10236613May 19, 2023Suspension, Electrical system. This bulletin provides information for when the messages "Air suspension: system fault" or "Shock absorber system/suspension" is shown in the instrument cluster, and one or more of the following DTCs are stored B200FF0, B200FF1, B200FF3, B200FF4, B200FF5.
• 10237003May 17, 2023Equipment. This bulletin states to replace the USB interface in instances where it has become damaged or pushed in and is no longer functioning.
• 10236601May 12, 2023Equipment. This bulletin provides instructions for ordering replacement Safety Certification labels or VIN plates.
• 10236588May 12, 2023Transmission and drivetrain. This bulletin provides instructions for when DTC P1A5B00 is stored after replacing the transmission control module or valve body for another concern.
• 10237002May 9, 2023Electrical system. This bulletin provides instructions to disable the configuration wizard.
• 10236591May 9, 2023Electrical system. This bulletin provides a software update for when "All Wheel Drive Malfunction Message" is displayed in the instrument cluster and DTC U030000 is logged.
• 10236373May 9, 2023Exterior lighting. This bulletin provides information for when there is moisture accumulation in the exterior lights.
• 10236599May 8, 2023Body and structure, Exterior lighting. This bulletin provides information for when car wash bristles become stuck in the body gap between the headlight and fender.
• 10236562May 8, 2023Equipment. This bulletin provides information to Audi technicians regarding the VIN-4-PIN bonus program.
• 10236378May 8, 2023Exterior lighting. This bulletin provides details on how to properly document optical concerns in headlights and taillights for warranty submissions.
• 10236376May 8, 2023Engine cooling. This bulletin provides information for when the customer advises that there is cracking, grinding, rattling, humming, whining, or similar interference.
• 10236628May 5, 2023Seats, Electrical system. This bulletin provides information for when the starter battery is discharged, and the vehicle cannot be started due to the front adjustment seat switch becoming jammed.
• 10235502Apr 25, 2023Visibility (wipers, defrost, mirrors). This bulletin provides instructions for when the sunroof glass panel, or the sunroof rollershade does not operate properly.
• 10235476Apr 20, 2023Visibility (wipers, defrost, mirrors). This bulletin provides information for when one or both rear windows cannot be closed using the one-touch feature and DTC B14874B is stored.
• 10235354Apr 19, 2023Steering. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked.
• 10235359Apr 18, 2023Other or unknown, Equipment, Brakes. This bulletin provides information for when there are noises when braking, and the brake pad thickness is OK.
• 10235336Apr 18, 2023Steering. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked.
• 10235483Apr 17, 2023Visibility (wipers, defrost, mirrors). This bulletin provides information for when there are semi-circular marks on the edges of the display glass.
• 10235122Apr 17, 2023Equipment. This bulletin provides information related to maintaining the 12V Lead-acid or AGM battery when a vehicle is parked for a prolonged period of time.
• 10234582Apr 13, 2023Equipment. This bulletin provides information on how to document optical defects in order to submit to Warranty.
• 10234565Apr 13, 2023Electrical system. This bulletin provides the ODIS test plan for when the vehicle doesn't start, or the ignition cannot be turned on due to a drained 12V battery (A).
• 10234559Apr 13, 2023Equipment. This information bulletin contains a background on the outside air temperature reading.
• 10233771Mar 31, 2023Engine cooling. This bulletin provides information on the discontinuation and mixing of Audi-approved engine coolants.
• 10233603Mar 31, 2023Body and structure, Visibility (wipers, defrost, mirrors). This bulletin describes the process to clean sticker residue from the windshield.

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