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Service bulletins for the 2021 Audi S4

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.

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

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
A9024872073747_22024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there are scratches or a coating on the cover of the instrument cluster, or if there are particles inside the housing.
A9024862069331_32024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the warning "Instrument cluster: fault. Limited warning messages. Please contact workshop." B200096
A9424812073332_32024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there is noise while steering.
A9124152073629_22024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when Apple CarPlay connection is dropped repeatedly in short intervals.
A9124092059528_92024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when DTC B200096 or B200000 are stored in the telematics control module; ConBox High.
A9024962071281_22024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there is an instrument cluster warning "Fault: Limited warning messges", DTC B174404.
A9024952059891_62024-06-25. Service bulletin. ELECTRICAL SYSTEM. This byulletin provides information when the Audi pre sense icon for restricted function is displayed after the engine starts.
A9024872073747_22024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when there are scratches or a coating on the cover of the instrument cluster, or if there are particles inside the housing.
A9024862069331_32024-06-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the warning "Instrument cluster: fault. Limited warning messages. Please contact workshop." B200096
A9124892069112_52024-04-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information on various improvements for MIB 3.
A1924552061918_62024-04-04. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:FLUID/COOLANT; UNKNOWN OR OTHER. This bulletin provides information when the low coolant light is on but the coolant level is within specifications.
A9124742069112_42024-03-06. Service bulletin. ELECTRICAL SYSTEM:ADAS:VIDEO MONITOR/SCREEN. This bulletin provides information on various improvements for MIB 3.
A9024772065932_22024-03-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; UNKNOWN OR OTHER. This bulletin provides information when the Audi virtual cockpit has a white sheen.
A9024752064983_72024-03-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; UNKNOWN OR OTHER. This bulletin provides information for when there is a pixel error in the Audi virtual cockpit.
A9024742065960_32024-03-06. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides information for when the Audi virtual cockpit is distorted due to a broken screen.
A9123062024323102024-01-04. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE. This bulletin provides information when the parking assistance provides false warnings.
A0023822047812_72024-01-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin provides information on how to set up and use the SD Creator for obtaining vehicle software updates via the Mirror Server.
A9123542067843_32024-01-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin provides information when the configuration appears without apparent reason with MIB3.
A4523362072304_12024-01-04. Service bulletin. UNKNOWN OR OTHER; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT; ELECTRICAL SYSTEM:ADAS:HILL DESCENT ASSIST:SENSOR. This bulletin provides information for when the ABS/ESC speed sensor has an implausible signal.
AVIN4PIN202312012024-01-04. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; SEAT BELTS; STRUCTURE:BODY:DOOR; SUSPENSION. Noise from front door trim panel while driving Low coolant warning in cluster, coolant level is correct Fuel pressure low. DTC P008700 Front window inoperative Air suspension warning - DTC P089200 charge handle doesn't release vehicle will not charge noise from belt tensioner damper Wheel speed sensor DTC C101AF1;C101BF1;C101CF1;C101DF1
A9023592069331_22024-01-04. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides information when there is a message in the instrument cluster: :Instrument cluster: fault. Limited warning messages. Please contact workshop"; B200096.
A9123512065728_62023-12-06. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM; COMMUNICATION:MANUFACTURER TELEMATICS. This bulletin provides information when the MMI screen is blank in MIB3 with Apple CarPlay.
A9123462064681_42023-12-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information for when the wireless charging does not work.
A9023562032113_82023-12-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides general information about the outside air temperature reading.
A2723622069747_52023-12-06. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This bulletin provides information on document requirements before replacement of the vehicle 12 V battery when it is is drained.

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