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.

• 11021447Jul 10, 2025Other or unknown. This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool
• 11020372Jun 27, 2025Electrical system. This bulletin provides information when Key User pariing is not possible, or the myAudi login cannot be completed in the vehicle.
• 11020371Jun 27, 2025Transmission and drivetrain. This bulletin provides information when the starter/generator drive belt is noisy or came off.
• 11020367Jun 26, 2025Fuel system. This bulletin provides information when there is corrosion on the exhaust tail pipes.
• 11020351Jun 13, 2025Other or unknown. This bulletin provides information when, with ConBox High, the Emergency call (SOS) fault/LED is red, with DTC B200000.
• 11020346Jun 12, 2025Transmission and drivetrain. This bulletin provides information when the starter/generator drive belt is noisy or came off.
• 11020336Jun 3, 2025Electrical system. This bulletin provides information when thre is a warning in the instrument cluster: "Instrument cluster: fault. Limited warning messages. Please contact workshop"; B200096.
• 11020337Jun 2, 2025Electrical system. This bulletin provides information when the calendar function is not available.
• 11020335Jun 2, 2025Suspension. This bulletin provides information when there are rumbling noises from the suspension - upper link rubber mounting.
• 11018980May 28, 2025Other or unknown. This bulletin provides a deployment overview for customer service packages MLB and MQB for MIB3/connectivity box/OCU3/LSR.
• 11018973May 28, 2025Engine. This bulletin provides information when DTC U14A00 Terminal 30 is stored in the ECM.
• 11018977May 22, 2025Transmission and drivetrain. This bulletin provides informaoitn when there is droning noises/vibrations in tight corneres, in vehicles that have quattro with ultra technology.
• 11018975May 22, 2025Body and structure. This bulletin provides information when there are noises after selecting a gear while the vehicle is idling and stationary, or while driving.
• 11018960May 22, 2025Body and structure. This bulletin provides accounting instructions for noises from the headliner/noises from the panoramic sunroof.
• 11018966May 9, 2025Electrical system. This bulletin provides information when the display of the Audi virtual cockpit is distorted due to a broken screen.
• 11018963May 9, 2025Steering. This TSB provides information when the warning message "Steering lock for active steering failed" appears.
• 11018961May 8, 2025Electrical system. This bulletin provides information when the anti-theft alarm activates for no reason, or when the anti-theft alarm does not activate.
• 11018962May 5, 2025Electrical system. This bulletin provides information when the restricted function icon for Audi pre sense is displayed after engine starts.
• 11017671Apr 28, 2025Other or unknown. Summary of all Vin4Pin topic in May Cylinder head cover bolts leaking Airbaglight on DTC B12251B Steering column switch trim dislodged MIB3 system takes a long time to load at startup Quattro ultra binding Front or rear window not closing correctly/reverse direction Sunroof shade binds
• 11017666Apr 22, 2025Electrical system. This TSB provides MIB3 Software update instructions.
• 11017657Apr 18, 2025Other or unknown. This TSB is a label placement guide as required by CARB for remanufactured parts.
• 11017647Apr 17, 2025Steering. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
• 11017659Apr 16, 2025Electrical system. This TSB provides information when the message "Engine/power nt start system: fault. Please contact workshop" appears; DTC B143C29.
• 11017649Apr 15, 2025Body and structure. This service information TSB describes a cosmetic issue after using a car wash.
• 11017637Apr 14, 2025Electrical system. This TSB provides informatio when, in MIB3, the MMI sidebar is missing.
• 11017621Apr 14, 2025Seats. This TSB provides damage assessment guidelines for textile seat covers.
• 11017617Apr 14, 2025Electrical system. This bulliten provides information on reinstaling the navigation database.
• 11017616Apr 14, 2025Visibility (wipers, defrost, mirrors). This TSB provides information on proper documentation for visual complaints regarding the headlights and taillights.
• 11017614Apr 14, 2025Electrical system. This TSB provides information when there is an eCall fault/eCall LED is red with DTC B200000.
• 11017638Apr 10, 2025Other or unknown. Apple CarPlay: general troubleshooting for connection complaints.
• 11017625Apr 10, 2025Electrical system. This bulletin provides information when the exterior lights have moisture accumulation.
• 11017634Apr 9, 2025Electrical system. This TSB provides information when the warning "Fault: Limited warning messages" appears in the virtual cockpit; DTC B174404.
• 11016506Mar 31, 2025Body and structure. This bulletin provides information about repiars for squeaks and rattles in the headliner.
• 11016568Mar 26, 2025Electrical system. This TSB provides information when convenience opening does not work.
• 11016564Mar 24, 2025Electrical system. This TSB provides troubelshooting steps when the myAuid login can not be completed in the infotainment system
• 11016561Mar 20, 2025Other or unknown. This TSB is a label placement guide as required by CARB for remanufactured parts.
• 11016532Mar 12, 2025Engine. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
• 11016502Mar 12, 2025Suspension. This bulletin serves as an assessment aid for shock absorber leaks.
• 11016554Mar 11, 2025Electrical system. This bulleitn provides information regarding Over The Air automatic online map update complaints.
• 11016549Mar 6, 2025Electrical system. This TSB provides information when home address, work address and favorites are deleted.
• 11016522Mar 4, 2025Other or unknown. This bulletin provides information regarding various comlaints related to Apple CarPlay with Apple iOS devices.
• 11016505Mar 4, 2025Visibility (wipers, defrost, mirrors). This bulletin provides information regarding the GFF test plan required for A/C compressr replaements regardless of the concern.
• 11016504Mar 4, 2025Suspension. This bulletin provides information regaridng securting the bump stops when there are noises form the rear of the vehicle.
• 11016500Feb 25, 2025Lane departure. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
• 11015774Feb 25, 2025Other or unknown. This bulletin provides a deployment overview for customer service packages MLB and MQB for MIB3/connectivity box/OCU3/LSR.
• 11015771Feb 25, 2025Electrical system. This TSB provides information when there is an eCall fault/eCall LED is red with DTC B200000.
• 11015754Feb 18, 2025Body and structure. This bulletin provides information about leather care and seat repair.
• 11015735Feb 11, 2025Electrical system. This bulletin provides instructions on reinstalling the Navigation Database in vehcles with MiB3.
• 11015734Feb 10, 2025Steering. This TSB provides information when the warning message "Steering lock for active steering failed.
• 11013750Jan 31, 2025Electrical system. This TSB provides information when there are visible wires in the interior.

← All problems reported for the 2021 Audi A4