2018 Audi A4 Technical Service Bulletins

773 technical service bulletins (TSBs) are on record for the 2018 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.

• 11023738Sep 29, 2025Suspension. This bulletin provides information when there are rumbling noises from the suspension - upper link rubber mounting.
• 11023755Sep 26, 2025Electrical system. This bulleitn provides information whent here are complaints about route guidance with Navigation.
• 11023767Sep 25, 2025Steering. This bulletin provides information when there is a prompt to take over steering; hands off detection.
• 11023741Sep 23, 2025Body and structure. This bulletin provides information when there is cracking/creaking noises during load changes or severe vehicle body torsion.
• 11023742Sep 12, 2025Body and structure. This bulletin provides information when the air conditioning cooling output is insufficient; leak on air conditioning system evaporator.
• 11023811Sep 11, 2025Other or unknown. This bulletin provides sevice info regarding the bluetooth connection with an Apple iPhone.
• 11023749Sep 11, 2025Other or unknown. This bulletin provides information related to the VIN-4-PIN Program.
• 11023740Sep 10, 2025Body and structure. This bulletin provides information when there is cracking/creaking noises during load changes or severe vehicle body torsion.
• 11023734Sep 10, 2025Visibility (wipers, defrost, mirrors). This bujlletin provides information regarding the GFF test plan required for A/C compressor replacements regardless of the concern.
• 11023800Sep 9, 2025Electrical system. This bulletin provides workshop information for fault findinga nd repair for the electric tailgate.
• 11023736Sep 5, 2025Transmission and drivetrain. This bulletin provides informaiton when there is an oil leak at the transmission connector.
• 11022715Aug 29, 2025Other or unknown. This bulletin provides tips for improving the robustness of the Bluetooth and CarPlay connection.
• 11022710Aug 29, 2025Body and structure. This bulletin provides information for when there are scratches or a coating on the cover of the instrument cluster, or there are particles or insects inside of the housing.
• 11022704Aug 28, 2025Body and structure. This bulletin provides information when there is corrosion on the tailpipes.
• 11022698Aug 26, 2025Electrical system. This bulletin provides information for wire harness repairs and documentation.
• 11022664Aug 19, 2025Other or unknown. This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool
• 11022669Aug 15, 2025Transmission and drivetrain. This bulletin provides informaoitn when there is droning noises/vibrations in tight corneres, in vehicles that have quattro with ultra technology.
• 11022668Aug 15, 2025Other or unknown. This bulletin provides information when the horn sound quality is poor.
• 11022633Aug 1, 2025Other or unknown. This bulleitn provides information regarding UV Leak additive for finding oil leaks.
• 11022630Aug 1, 2025Other or unknown. This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: The hotfix is to correct the issue: Issue seen: ODS5003E Infrastructure Guided Fault Finding: An internal fatal error occurred during the G929 - Vehicle Interior Carbon Dioxide Concentration Sensor function test plan. NOTE: This ODS error could show up on any other GFF function…
• 11021439Jul 31, 2025Electrical system. This TSB provides information when the Audi advanced key is inoperative; door handle touch sensors.
• 11021441Jul 30, 2025Transmission and drivetrain. This bulletin providesi nformation when various DTCs are stored; high maximum temperature recorded for clutch K1.
• 11021438Jul 25, 2025Electrical system. This TSB provides informatin when the cigarette lighter element does not eject, or the cigarette lighter is inoperable.
• 11021480Jul 22, 2025Other or unknown. This bulletin provides information when a customer reports that poor voice quality via bluetooth with iOS 18.0.x - 18.4.x.
• 11021444Jul 22, 2025Body and structure. This bulletin provides information when the air conditioning cooling output is insufficient; leak on air conditioning system evaporator.
• 11021473Jul 18, 2025Body and structure. This TSB provides information related to billing regarding billing for a broken sunroof glass panel.
• 11021455Jul 15, 2025Transmission and drivetrain. This bulletin provides informaoitn when there is droning noises/vibrations in tight corneres, in vehicles that have quattro with ultra technology.
• 11021452Jul 10, 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.
• 11021447Jul 10, 2025Other or unknown. This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool
• 11020367Jun 26, 2025Fuel system. This bulletin provides information when there is corrosion on the exhaust tail pipes.
• 11020335Jun 2, 2025Suspension. This bulletin provides information when there are rumbling noises from the suspension - upper link rubber mounting.
• 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.
• 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.
• 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.
• 11017621Apr 14, 2025Seats. This TSB provides damage assessment guidelines for textile seat covers.
• 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.
• 11016506Mar 31, 2025Body and structure. This bulletin provides information about repiars for squeaks and rattles in the headliner.
• 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.
• 11016522Mar 4, 2025Other or unknown. This bulletin provides information regarding various comlaints related to Apple CarPlay with Apple iOS devices.

← All problems reported for the 2018 Audi A4