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Service bulletins for the 2023 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.

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

By type

By component

By trouble code

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
A9622792061932_52022-10-05. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides information on how to properly address DTC U112300.
A2422602067937_12022-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin offers further guidance regarding diagnosis and system information for vehicles with a 48 V electrical system.
A1722202067906_12022-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides detailed instructions for diagnosis when DTC P0A7D00 is present.
A8722302067716_12022-09-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin advises that techs should document the specific o-ring seal that is replaced if a refrigerant leak is found and caused by the o-ring seal.
A6422852020552112022-08-04. Service bulletin. VISIBILITY; EQUIPMENT. This bulletin provides instructions on how to properly clean exterior glass.
A5322052043016_32022-08-03. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM: CABLES:FASTENER/CONNECTOR; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains repair information for when there area cables visible in the passenger compartment of the vehicle.
A4822342065978_22022-08-03. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; STEERING:STEERING WHEEL /HANDLE BAR:HAND HEATER/COOLER. This bulletin explains that the steering wheel may warm up while being held leading to the impression that he steering wheel isn't heating evenly.
A8722282063575_22022-08-03. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin contains diagnostic instructions for air conditioning leaks.
A9022732052299_52022-07-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains repair instructions for proper transport mode deactivation (DTC U142100, DTC P169A00, and U13EB00 ).
A9122032061028_42022-07-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin describes the registering and pairing process required to utilize the SIM card to activate 3rd generation Audi connect services.
A0022562066297_12022-07-01. Service bulletin. EQUIPMENT. This bulletin describes a reporting program for Audi certified technicians.
A4522262067132_12022-06-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin contains instructions for when the message "Audi pre sense currently restricted. See owner's manual" is displayed in the instrument cluster without DTCs.
A9022592063038_22022-05-05. Service bulletin. EQUIPMENT:ELECTRICAL. This informational bulletin explains why the version information pops-up.
A9022572032113_62022-05-05. Service bulletin. EQUIPMENT:ELECTRICAL. This is an informational bulletin containing information about the outside temperature reading.
A9122892037809_92022-04-05. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This informational bulletin contains instructions about updating the navigation map.
A9122872066315_12022-04-05. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin describes a condition in which the USB ports may become damaged during use, and the procedure to repair.
A4622282051095_52022-03-04. Service bulletin. EQUIPMENT:ELECTRICAL. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
A9122612065488_12022-02-04. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin explains that the HVAC system cannot be operated by using a voice command
A9022432065960_12022-02-04. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL. This bulletin advises on the diagnosis and determination of warranty coverage for cracks appearing on the Virtual Cockpit screen.
A4622272034181192022-02-04. Service bulletin. EQUIPMENT; SERVICE BRAKES; EQUIPMENT ADAPTIVE/MOBILITY. This technical service bulletin provides troubleshooting for brake noise.
A5521652062730_22022-01-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin explains why the compartment lid cannot be closed using the buttons on the key sometimes.
A4421842065160_12021-12-07. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; TIRES:TEMPORARY/EMERGENCY SPARE TIRE. This informational bulletin explains how the temporary/collapsible spare wheel inflates.
A9121312061028_32021-10-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin explains and troubleshoots when Audi connect does not have a green SOS light.
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.

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