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Service bulletins for the 2019 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.

836 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
A0023682066297_22023-06-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information to Audi technicians regarding the VIN-4-PIN bonus program.
A4623432069904_12023-05-05. Service bulletin. SERVICE BRAKES; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; UNKNOWN OR OTHER. This bulletin provides information for when there are noises when braking, and the brake pad thickness is OK.
A2723532069916_12023-05-05. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides information related to maintaining the 12V Lead-acid or AGM battery when a vehicle is parked for a prolonged period of time.
A6623982046229_42023-05-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on how to document optical defects in order to submit to Warranty.
A9023222032113_72023-05-05. Service bulletin. EQUIPMENT. This information bulletin contains a background on the outside air temperature reading.
A9123872062480_32023-05-05. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL. This bulletin advises that DTCs B18BDF0 and B18BEF0 are erroneously stored and should be cleared.
A9123832037809_12023-04-06. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This bulletin provides information on how to update the navigation map.
A9123722052299_72023-03-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information to address when the Audi connect "User management" screen is greyed out, and the customer cannot complete the key user pairing. OR the SOS emergency button is red or flashing read. DTCS P169A00 and U13EB00 are present in the system.
A9023042069416_12023-03-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information for when the 12V socket and/or the cigarette lighter are not working.
A9123692052299_62023-03-06. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides instructions for when the Audi connect "User management" option is greyed out, or the SOS emergency button is red or flashing red.
DC_Alternator_52023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
DC_Alternator_42023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
DC_Alternator_32023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
DC_Alternator_62023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
A9623812051239_32023-02-07. Service bulletin. EQUIPMENT:ELECTRICAL; BACK OVER PREVENTION. This bulletin provides instructions for when the customer is unable to program their garage door opener to their vehicle.
A6623952060333_32023-02-07. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; STRUCTURE. This bulletin provides instructions when the black optic exterior trim is discolored.
A4323682059665_42023-02-07. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides instructions for when the warning light for suspension illuminates in the instrument cluster.
DC_Alternator_22023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Support for Customers Affected by Alternator Back-order
A9123592036576_72023-02-07. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin advises that the MMI screen may freeze, or go blank and then restart when a special character like a symbol or emoticon is used in the name field for contact(s).
A4623402069078_12023-02-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions for when the zirconium inserts found to be not firmly attached during service work.
DC_RECALLS2023-01-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SAFETY RECALLS, COMPLIANCE RECALLS and STOP SALES
A9722892061976_32022-12-06. Service bulletin. ELECTRICAL SYSTEM:WIRING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains guidance for submitting warranty wiring repairs.
A9122472062466_32022-12-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin describes the ways in which a variety of Audi vehicles connect to Apple Wireless CarPlay, and the methods to troubleshoot connection concerns.
A9122452068435_12022-12-06. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI. This bulletin states that due to a software malfunction in Apple iOS Version 16.0.x there are restrictions with bluetooth connection.
A9122312055945122022-10-05. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin contains repair instructions for when the warning message "SOS Emergency call function deactivated" is seen in the instrument cluster.

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