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Service bulletins for the 2020 Audi A4

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1073 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
TSB_2074806_32025-06-03. Service bulletin. STRUCTURE:BODY. This bulletin provides information when there are noises after selecting a gear while the vehicle is idling and stationary, or while driving.
TSB_2073867_22025-06-03. Service bulletin. ENGINE. This bulletin provides information when DTC U14A00 Terminal 30 is stored in the ECM.
TSB_2065960_52025-06-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the display of the Audi virtual cockpit is distorted due to a broken screen.
TSB_2061904_72025-06-03. Service bulletin. STEERING. This TSB provides information when the warning message "Steering lock for active steering failed" appears.
TSB_2059891_92025-06-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the restricted function icon for Audi pre sense is displayed after engine starts.
TSB_2056019_42025-06-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the anti-theft alarm activates for no reason, or when the anti-theft alarm does not activate.
TSB_2055443_22025-06-03. Service bulletin. STRUCTURE:BODY. This bulletin provides accounting instructions for noises from the headliner/noises from the panoramic sunroof.
AVIN4APIN202504282025-05-03. Other. UNKNOWN OR OTHER. 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
TSB_2060523_42025-05-03. Service bulletin. ELECTRICAL SYSTEM. This TSB provides MIB3 Software update instructions.
TSB_2077631_12025-05-03. Service bulletin. ELECTRICAL SYSTEM. This TSB provides information when the message "Engine/power nt start system: fault. Please contact workshop" appears; DTC B143C29.
TSB_2077320_22025-05-03. Service bulletin. UNKNOWN OR OTHER. This TSB is a label placement guide as required by CARB for remanufactured parts.
TSB_2031473_62025-05-03. Service bulletin. STRUCTURE:BODY. This service information TSB describes a cosmetic issue after using a car wash.
SM 26-20252025-05-03. Other. STEERING. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
TSB_2073582_22025-05-03. Service bulletin. UNKNOWN OR OTHER. Apple CarPlay: general troubleshooting for connection complaints.
TSB_2071281_32025-05-03. Service bulletin. ELECTRICAL SYSTEM. This TSB provides information when the warning "Fault: Limited warning messages" appears in the virtual cockpit; DTC B174404.
TSB_2012749_182025-05-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the exterior lights have moisture accumulation.
TSB_2071893_22025-05-03. Service bulletin. SEATS. This TSB provides damage assessment guidelines for textile seat covers.
TSB_2062115_142025-05-03. Service bulletin. ELECTRICAL SYSTEM. This bulliten provides information on reinstaling the navigation database.
TSB_2061922_42025-05-03. Service bulletin. VISIBILITY/WIPER. This TSB provides information on proper documentation for visual complaints regarding the headlights and taillights.
TSB_2077364_12025-04-04. Service bulletin. ELECTRICAL SYSTEM. This TSB provides troubelshooting steps when the myAuid login can not be completed in the infotainment system
TSB_2077320_12025-04-04. Service bulletin. UNKNOWN OR OTHER. This TSB is a label placement guide as required by CARB for remanufactured parts.
TSB_2077204_12025-04-04. Service bulletin. ELECTRICAL SYSTEM. This bulleitn provides information regarding Over The Air automatic online map update complaints.
TSB_2077148_12025-04-04. Service bulletin. ELECTRICAL SYSTEM. This TSB provides information when home address, work address and favorites are deleted.
TSB_2075530_22025-04-04. Service bulletin. ENGINE. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
TSB_2071185_22025-04-04. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information regarding various comlaints related to Apple CarPlay with Apple iOS devices.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.