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.

• 11011302Nov 7, 2024Electrical system. This bulletin provides information when various camera-based driver assistance systems are unavailable (DTC B200FF2 (1123875)).
• 11009941Oct 31, 2024Body and structure. This bulletin provides diagnostic information regarding the locking system.
• 11009967Oct 29, 2024Electrical system. This bulletin provides information when there is an issue with wireless charging/wireless charging not working with Audi Phone Box.
• 11009948Oct 29, 2024Body and structure. This bulletin provides information when there is noise from the backrest of the front seat.
• 11009934Oct 29, 2024Transmission and drivetrain. This bulletin provides information when the Gearbox warning is on, DTC P17F900 is stored in the TCM.
• 11009933Oct 24, 2024Transmission and drivetrain. This bulletin provides information when there is a function restriction with event memory entry P071800 - P276800 (symptom 20736 - 20737).
• 11009938Oct 21, 2024Transmission and drivetrain. This bulletin provides information when there are droning noises/vibrations in tight corners, vehicles with PR number GH4 (quattro with ultra technology).
• 11009965Oct 18, 2024Electrical system. This bulletin provides information when the calendar function is not available.
• 11009959Oct 8, 2024Electrical system. This Pending Service Solution (PSS) requests that technicians enter a record in the PSS Database when there is an Audi connect installation error.
• 11009958Oct 8, 2024Electrical system. This TSB provides information when DTCs U142100 and U164200 are stored as passive/sporadic in the gateway.
• 11009951Oct 8, 2024Electrical system. This TSB provides information when the Virtual cockpit has a pixel error.
• 11009928Oct 8, 2024Engine. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
• 11009983Oct 7, 2024Other or unknown. Vehicle Concerns Before Recall Repair Available
• 11009924Oct 4, 2024Engine. This bulletin provides information when the MIL is on P045600 Very Small Leak Detected - NVLD.
• 11009936Oct 3, 2024Transmission and drivetrain. This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
• 11009406Sep 30, 2024Electrical system. This bulletin provides information when "Audi Active Lane Assist/Traffic Jam Assist: malfunction!" is displayued, DTC U112300 is stored in one of two control modules
• 11009327Sep 24, 2024Engine. This bulletin provides information when ther is an Engine: start/stop system fault shown and start/stop system not is working; mileage below 50 km/32 miles.
• 11009321Sep 24, 2024Transmission and drivetrain. This bulletin provides information when the starter/generator drive belt is noisy or came off.
• 11009324Sep 23, 2024Transmission and drivetrain. This bulletin provides information pertaining to the cooling system; radiator fan control P048000/P048100.
• 11009375Sep 20, 2024Other or unknown. This bulletin provides information pertaining to the GFF test plan required for A/C compressore replacements, regardless of the concern.
• 11009390Sep 18, 2024Electrical system. This Pending Service Solution (PSS) requests that technicians enter a record in the PSS Database when there is an Audi connect installation error.
• 11009380Sep 18, 2024Electrical system. This bulletin provides information about the Audi pre sense warning, warning jolt and/or brake engagement.
• 11009372Sep 18, 2024Body and structure. This bulletin provides informaiton when the exterior black optic trim is discolored.
• 11009347Sep 18, 2024Steering. This bulletin provides information when there are vibrations and rotational steering wheel vibrations.
• 11009313Sep 18, 2024Other or unknown. This bulletin provides guidance in order to provid informaiton regarding preparatoin when calling the Audi Technical Assistnce Center (TAC).
• 11009378Sep 16, 2024Electrical system. This bulletin provides inormatin when the guages is faulty in the Audi virtual cockpit.
• 11009365Sep 16, 2024Body and structure. This bulletin provides information when there is visible corrosion at the joint between the roof and roof side member.
• 11009363Sep 16, 2024Steering. This bulletin provides informatin when there is a squeaking noise from the rubber boot of the intermediate steering shaft.
• 11009362Sep 16, 2024Steering. This bulletin provides information when there is a prompt to take over steering; hands off detection.
• 11009377Sep 10, 2024Electrical system. This bulletin provides information when the audi virtual cockpit display has semi-circular marks on the edges of the display.
• 11009361Sep 10, 2024Other or unknown. This bulletin provides information regarding steering wheel visual damage.
• 11009356Sep 10, 2024Brakes. This bulletin provides informaion regarding zirconium inserts in the bake piston for vehicle equipped with ceramic brakes.
• 11009354Sep 10, 2024Other or unknown. This bulletin provides information on frequency analysis.
• 11009351Sep 10, 2024Brakes. This bulletin provides information regarding the general approach to brakes rubbing.
• 11009348Sep 10, 2024Electrical system. This bulleitn provides information when there is an implausible signal in the ABS/ESC speed sensor.
• 11009335Sep 10, 2024Suspension. This bulletin provides information when there are rumbling noises from the suspension - upper link rubber mounting.
• 11009312Sep 10, 2024Body and structure. This bulletin provides informationw hen there are car was brush bristles trapped in the seam between the headlight and fender.
• 11009343Sep 9, 2024Suspension. This bulletin provides information when DTC B2200FF is stored in the J775.
• 11009339Sep 9, 2024Suspension. This bulletin provides information parameter settings for suspension control unit J775.
• 11007348Aug 30, 2024Electrical system. This bulletin provides informationw hen the parking aid sensor bracket(s) separates from the rear bumper.
• 11007347Aug 30, 2024Electrical system. This bulletin provides information when there is an eCall fault / the eCall LED is red with DTC B200000.
• 11007338Aug 30, 2024Electrical system. This bulletin provides informaion when there power and torque always display always shows 0% in the Audi virtual cockpit.
• 11007312Aug 30, 2024Transmission and drivetrain. This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
• 11007301Aug 30, 2024Fuel system. This bulletin provides information when there are functional restrictions or driving behavior due to diesel detected in petrol.
• 11007267Aug 30, 2024Electrical system. This bulletin provides informationw hen the parking aid sensor bracket(s) separates from the rear bumper.
• 11007266Aug 30, 2024Electrical system. This bulletin provides information when there is an eCall fault / the eCall LED is red with DTC B200000.
• 11007257Aug 30, 2024Electrical system. This bulletin provides informaion when there power and torque always display always shows 0% in the Audi virtual cockpit.
• 11007231Aug 30, 2024Transmission and drivetrain. This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
• 11007220Aug 30, 2024Fuel system. This bulletin provides information when there are functional restrictions or driving behavior due to diesel detected in petrol.
• 11007351Aug 29, 2024Visibility (wipers, defrost, mirrors). This bulletin provides information on repairing the corrugated hose for the windshield washer system.

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