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Service bulletins for the 2022 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.

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

By type

By component

By trouble code

Bulletins, newest first
A9121382064681_12021-11-05. Service bulletin. EQUIPMENT. Informational TSB detailing why the mobile device sometimes cannot be charged wirelessly.
A7221372064695_12021-11-05. Service bulletin. STRUCTURE; SEATS. The informational bulletin explains the technical aspect of enter/exit assistance.
DC 202109282021-10-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Dealer Communication - Vehicle Sales Reporting, Reinstatement, and Audit Policy Update - Effective September 30, 2021
A9121372064385_12021-10-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin contains instructions for Audi connect GEN3 pairing.
A9121342018187_12021-10-05. Service bulletin. EQUIPMENT. This bulletin contains inspection guidelines for radio interference that causes noises in the speaker.
A9121312061028_32021-10-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin explains and troubleshoots when Audi connect does not have a green SOS light.
A9121262064429_12021-10-05. Service bulletin. BACK OVER PREVENTION: SENSING SYSTEM: CAMERA. This bulletin states to create a PSS record for when the star button is programmed to the front camera views and is lost after a bus sleep cycle.
A8721162041717_72021-10-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This informational bulletin details on how to get a GFF test plan for A/C compressor replacements.
A6921702064545_12021-10-05. Service bulletin. AIR BAGS. This bulletin contains instructions for when DTC B101C29 and/or B101D29 is stored in the airbag control module.
A6921692056406_22021-10-05. Service bulletin. AIR BAGS. This bulletin contains instructions for when the airbag warning is illuminated and DTC B13BCF2 is stored.
A4321562051336_52021-10-05. Service bulletin. SUSPENSION. This bulletin contains repair instructions for DTC B200FF0.
A0121102028842_32021-10-05. Service bulletin. EQUIPMENT:ELECTRICAL. This informational bulletin gives instructions for identifying chip tuning.
A4821092028220_92021-09-03. Service bulletin. EQUIPMENT. This technical service bulletin informs the reader that damage to the appearance of the leather steering wheel caused by outside influence is not covered under warranty.
A9121212064246_12021-09-03. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT:ELECTRICAL. This bulletin contains information on how addressing the Bluetooth/address book download.
A9121202051720_42021-09-03. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin contains instructions for submitting a customer registration form for the Audi phone box to the customer's Mobile Network Operator.
A4421832056386_62021-09-02. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked.
A4221462038689_52021-09-02. Service bulletin. SUSPENSION. This bulletin contains information on how to fix a clunking or rattling noise heard from the rear suspension when the vehicle is driven over bumps.
A4221462038689_52021-08-04. Service bulletin. EQUIPMENT; SUSPENSION:REAR. This bulletin contains information on how to fix a clunking or rattling noise heard from the rear suspension when the vehicle is driven over bumps.
A9121142053916_32021-08-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This informational bulletin contains instructions for when a non-plus sized iPhone heats up while wirelessly charging and the CarPlay screen may appear frozen.
A0021482021205_62021-07-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STRUCTURE. This informational bulletin explains how to order replacement VIN plates, Safety Certification Labels, etc.
A0021472031473_32021-07-02. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:CONCEALMENT DEVICES; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STRUCTURE. This information bulletin states to remove the car wash bristle and advise the customer to go somewhere else to prevent it from occurring again.
A9421392063739_12021-07-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EXTERIOR LIGHTING:HEADLIGHTS:DAYTIME RUNNING LIGHTS:BULBS. This information bulletin explains how the daylights turn on and off.
A4821042063528_12021-07-02. Service bulletin. ENGINE; EQUIPMENT. This bulletin contains instructions for addressing intermediate shaft noises that are heard in the engine compartment.
A4821032063546_12021-07-02. Service bulletin. EQUIPMENT; STEERING. This bulletin states how to check for a dynamic steering actuator problem. Solution is under development.
A4821022061904_32021-07-02. Service bulletin. STEERING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. This bulletin contains repair instruction for when DTC C110DF0 is stored and the yellow steering lamp is on.

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