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.

• 10244536Oct 16, 2023Equipment. This bulletin provides information for when the Virtual cockpit displays a colorful line (pixel error).
• 10244325Oct 16, 2023Electrical system, Equipment. This bulletin provides information related to the VIN-4-PIN Program.
• 10244467Oct 13, 2023Electrical system. This bulletin provides instructions regarding unauthorized chip tuning (TD1).
• 10244320Oct 13, 2023Equipment, Electrical system. This bulletin provides information for when unauthorized/unjustified DTC memory entries are captured in ODIS test Plans (Ghost faults).
• 10243951Oct 9, 2023Visibility (wipers, defrost, mirrors). This bulletin provides information for when the outer perimeter seal is loose on the panoramic sunroof opening.
• 10243949Oct 9, 2023Engine cooling. This bulletin provides information for when there are vibrations or binding in tight turns with quattro Ultra.
• 10243938Oct 9, 2023Equipment. This bulletin provides details on the VIN-4-PIN program.
• 10243930Oct 4, 2023Equipment. This bulletin provides information on the additional reporting requirements for safety related inquiries.
• 10243973Oct 2, 2023Visibility (wipers, defrost, mirrors). This bulletin provides information on repairing the corrugated hose for the windshield washer system.
• 10242958Sep 20, 2023Equipment. This bulletin provides information on reinstalling the navigation database when DTC B126CF0 and/or B126CF1 is stored in the 005F.
• 10242932Sep 20, 2023Transmission and drivetrain. This bulletin provides information for when a Gearbox warning is on and DTC P17F900 is stored in the TCM.
• 10242918Sep 20, 2023Engine cooling. This bulletin provides information for when there is a coolant leak on a 2.0L engine.
• 10242953Sep 19, 2023Visibility (wipers, defrost, mirrors). This bulletin provides information for when the rear window reverses direction at upper stop. DTC: B148754 stored in door module.
• 10242949Sep 18, 2023Brakes. This bulletin provides information for when the brakes creak at an almost standstill.
• 10242948Sep 18, 2023Brakes. This bulletin provides information on brake pulsation diagnostic guidelines.
• 10242946Sep 18, 2023Brakes. This bulletin provides information on brake pulsation diagnostic guidelines.
• 10242945Sep 15, 2023Brakes. This bulletin provides information on for when there is corrosion on the friction surface of a steel brake disc.
• 10242940Sep 15, 2023Steering. This bulletin provides information for when a steering wheel shimmy, vibration, and/or oscillation is reported.
• 10242942Sep 14, 2023Brakes. This bulletin provides information on brake noise analysis and handling.
• 10242906Sep 13, 2023Equipment. This bulletin provides information on workshop mode with Audi connect vehicles.
• 10242930Sep 11, 2023Engine cooling. This bulletin provides information for when DTC P0A7D00 is stored.
• 10242920Sep 8, 2023Equipment. This bulletin provides information for document requirements before replacing a 12v battery.
• 10242939Sep 7, 2023Body and structure. This bulletin provides information for when there are noises from the front end dash panel when the vehicle is moving.
• 10242938Sep 7, 2023Transmission and drivetrain. This bulletin provides information for when there are noises and/or vibrations in tight turns.
• 10242903Sep 7, 2023Engine cooling. This bulletin provides information on professional noise analysis with the VAS 611 015 PICO NVH Tool.
• 10241438Aug 25, 2023Electrical system. This bulletin provides information for when the warning "Fault: Limited warning messages" appears in the instrument cluster with DTC B174404.
• 10241235Aug 24, 2023Exterior lighting. This bulletin provides information for when there are various malfunction LEDs lit sporadically without any DTCs stored.
• 10241458Aug 23, 2023Equipment. This bulletin provides information for when the customer has concerns about the navigation route guidance.
• 10241456Aug 18, 2023Equipment, Electrical system. This bulletin contains instructions to reinstall the navigation database in the presence of DTC B126CF1 stored in the 005F.
• 10241433Aug 18, 2023Visibility (wipers, defrost, mirrors). This TSB describes a method for leak detection for R134A and R1234yf refrigerant platforms only.
• 10241214Aug 18, 2023Electrical system. This bulletin provides information for when the MIL is on and P045600 is stored.
• 10241455Aug 11, 2023Electrical system, Equipment. This bulletin provides information for when there are no Audi connect services in the MMI, and the SOS LED does not turn green after PDI.
• 10241429Aug 10, 2023Body and structure. This bulletin provides information for an entry/exit assistance comfort concern.
• 10241454Aug 9, 2023Equipment. This bulletin provides information for various connectivity via bluetooth, AMI, or ASI when using CarPlay with Apple iOS devices.
• 10241211Aug 9, 2023Fuel system. This bulletin provides information for when the MIL is on with DTC P045600 Very Small Leak detected NVLD.
• 10241452Aug 8, 2023Equipment, Electrical system. This bulletin provides information for when the key user pairing process or myAudi login cannot be completed in the vehicle.
• 10241437Aug 8, 2023Electrical system. This bulletin provides information for when the driver information system display is blank in the instrument cluster.
• 10241428Aug 8, 2023Body and structure. This bulletin provides instructions for disabling and reengaging the gesture controlled rear lid (virtual pedal).
• 10241420Aug 8, 2023Engine. This bulletin provides information when there are noises from the front end and dash panel when the vehicle is moving.
• 10241425Aug 4, 2023Steering. This bulletin provides information for when the steering wheel heating does not heat up sufficiently.
• 10241422Aug 4, 2023Equipment, Tires. This bulletin provides information for when the collapsible wheel does not fully inflate using the toolkit.
• 10241421Aug 4, 2023Suspension. This bulletin provides information for when there is a rattle noise from the rear suspension.
• 10239691Jul 25, 2023Electrical system. This bulletin provides information for when the instrument cluster driver information system display is blank.
• 10239684Jul 25, 2023Electrical system. This bulletin provides information for when the instrument cluster driver information system display is blank.
• 10240201Jul 24, 2023Equipment. This bulletin provides information for when Outlook contacts are not accessible via the MMI when using Apple devices in vehicles with MIB3
• 10240154Jul 19, 2023Electrical system. This bulletin provides information for when there is noise from the area around the instrument cluster.
• 10240152Jul 19, 2023Visibility (wipers, defrost, mirrors). This bulletin provides information on the GFF test plan required when replacing the A/C compressor.
• 10239690Jul 19, 2023Brakes, Forward collision avoidance. This bulletin provides information for when an unexpected Audi presense front intervention such as a front end warning, a warning jolt, partial braking, or emergency braking occurs and a warning appears in the instrument cluster and audibly.
• 10239686Jul 19, 2023Visibility (wipers, defrost, mirrors). This bulletin provides information for when exterior glass cleaning is needed.
• 10239678Jul 19, 2023Engine cooling. This bulletin provides information for a loose engine oil filler cap is loose, DTCs P06800, P227900, P050700.

← All problems reported for the 2021 Audi A4