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Service bulletins for the 2020 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.

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

By type

By component

By trouble code

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Bulletins, newest first
A9020372058077_32020-02-08. Service bulletin. EQUIPMENT. This bulletin contains instructions for determining unexpected Audi pre sense interventions.
20TechRefREV1242020-02-08. Service bulletin. STRUCTURE. Added A8 e & Q5 e to titles & index
A9020362058077_22020-02-08. Service bulletin. SERVICE BRAKES; EQUIPMENT. This bulletin contains instructions for determining unexpected Audi pre sense interventions.
A0020332058030_22020-02-08. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin contains instructions for the Launch Process.
20TIREPRESCHRT2020-02-08. Service bulletin. TIRES. Added tire pressures for rest of models
20TechReferncDoc2020-02-08. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Added SQ7, SQ8, & RS Q8 to titles & index
20A4TECHREP12192020-01-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. "Vehicle Preparation Section: ADDED additional steps to Perform TSB 2058096/1 "91 Audi connect has no function, SOS LED is off, and SOS warning message in FPK"": - Perform MMI Menu Reset: 5F-Information Electronics >> Guided Functions >> Basic Settings >> Reset MMI Menu Settings - Deactivate privacy mode: Main Menu >> Privacy >> Activate Privacy Settings (Turn off) - Turn Vehicle Off and allow Bus Sleep Cycle "
A9219242038151112020-01-08. Service bulletin. EQUIPMENT; VISIBILITY:WINDSHIELD WIPER/WASHER. This bulletin provides instructions for repairing a vehicle with a washer solvent light on but the level is correct.
A0019312058030_12020-01-08. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This bulletin contains instructions for the Launch Process.
20A4S4ALRDTECREP2020-01-08. Service bulletin. ELECTRICAL SYSTEM. Vehicle Preparation Section: ADDED: "Perform TSB 2058096/1 '91 Audi connect has no function, SOS LED is off, and SOS warning message in FPK'" 2020 A4 allroad
A9419182012749_12020-01-08. Service bulletin. EXTERIOR LIGHTING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Exterior lights, moisture accumulation 2013-2021 A3 Cabriolet, 2016-2018 Sportback, 2004-2005 A4 Cabriolet, 2004-2008 S4 Cabriolet, 2008 RS4 Cabriolet, 2010-2021 A4 allroad, 2018-2021 A5 Sportback, 2010-2012, 2018-2021 RS5 Cabriolet, 2018-2021 S5 Sportback, 2004-2006 A7, 2004-2011 S7, 2021 RS6 Avant, 2004-2006 S8
A0019292031473_22020-01-08. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin contains instructions for when car wash bristles are stuck in the headlights. 2015-2021 A3 Cabriolet, 2015-2018 A3 e-tron, 2011-2021 A4 allroad, 2018-2021 A5 Sportback, 2011-2012 and 2018-2021 RS5 Cabriolet, 2018-2021 S5 Sportback, 2021 RS6 Avant
20AUTIRECHAINS2020-01-08. Service bulletin. EQUIPMENT; TIRES; EQUIPMENT ADAPTIVE/MOBILITY. New document 2004-2020 A4 allroad, A6 allroad, A8L, R8 Spyder
20A4S4ALRDCSDEL2020-01-08. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Updated Phone Box Form 2020 A4 allroad
A9219232038151_12019-12-07. Service bulletin. VISIBILITY; VISIBILITY:WINDSHIELD WIPER/WASHER. This bulletin provides instructions for repairing a vehicle with a washer solvent light on but the level is correct. 2015-2021 A3 Cabriolet, 2016-2018 A3 Sportback, 2018-2021 A5 Sportback, 2012 and 2018-2021 RS5 Cabriolet, 2018-2021 S5 Sportback, 2021 RS 6 Avant
20TechReferncDoc2019-12-06. Service bulletin. EQUIPMENT. "ADDED A6 allroad to titles throughout document "
A4419722056386_22019-12-06. Service bulletin. STEERING. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked. 2019-2021 A3 Cabriolet, 2019-2021 A5 Sportback, 2019-2021 RS5 Cabriolet, 2019-2021 S5 Sportback, 2021 RS6 Avant
A4419712022563_12019-12-06. Service bulletin. WHEELS. This bulletin provides information regarding vibrations or movement that are felt in the wheel. 2015-2020 A3 Cabriolet, 2016-2018 A3 Sportback, 2008-2009 S4 Cabriolet, 2008 and 2010 RS4 Cabriolet, 2018-2020 A5 Sportback, 2010-2012 and 2018-2020 RS5 Cabriolet, 2018-2020 S5 Sportback, 2008 A7, 2008-2011 S7
20TechReferncDoc2019-11-07. Service bulletin. UNKNOWN OR OTHER. VEHICLE PREPARATION SECTION: ADDED FOR ALL MODELS: "Install front license plate carrier (if necessary) *Retain any removed trim required for carrier installation and give to the customer. If no front license plate carrier is necessary ensure the carrier remains in the trunk for the customer" Audi R8 Spyder 2020
A6919432056406_12019-11-07. Service bulletin. AIR BAGS. This bulletin contains instructions for when the airbag warning is illuminated and DTC B13BCF2 is stored. 2015-2020 A3 Cabriolet, 2016-2018 A3 Sportback, 2018-2020 A5 Sportback, 2018-2020 RS5 Cabriolet, 2018-2020 S5 Sportback
A4419702056386_12019-11-07. Service bulletin. WHEELS. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked. 2019-2021 A3 Cabriolet, A5 Sportback, RS5 Cabriolet, S5 Sportback, 2021 RS6 Avant
20AUUSMaint1012019-11-07. Service bulletin. UNKNOWN OR OTHER. ADDITIONAL MAINTENANCE ITEMS: ADDED "Change Fluid" at 120,000 miles or 10 years, whichever occurs first to Front Differential - R8 Coupe, R8 Spyder only
A4019972018194_92019-11-07. Service bulletin. UNKNOWN OR OTHER. This bulletin contains repair instructions for leaking shock absorbers.
A0019272045316_42019-11-07. Service bulletin. UNKNOWN OR OTHER. This bulletin contains information for diagnosing the Start/Stop system.
20A4S4ALRDTECREP2019-11-06. Service bulletin. EQUIPMENT. Vehicle Preparation Section: Changed Phone Box verbiage. Added Install Front license plate carrier (if necessary)*

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