2020 Audi S4 Service and Repair Manual
2020 Audi S4 service and repair manual a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
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Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, RS7, RS Q8, 2020-2021 Audi S6 sedan, Q5, A8, S8, A7, A6 Allroad, A5 Cabriolet, A4 sed
A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a
Dealers will replace the lock nuts and, if necessary, the associated bolts, free of charge. Owner n
Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A
Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.
Dealers will inspect the rear axle, adjust the alignment as necessary, and replace any prematurely o
Volkswagen Group of America, Inc. (Audi) is recalling certain 2017-2020 A4 Allroad, A4 Sedan, 2018-2019 RS5 Coupe, 2019 RS5 Sportback, 2018-2020 A5 Cabriolet, A5 Coupe, A5 Sportback, S4 Sedan, S5 Cabr
A disabled passenger air bag increases the risk of injury in the event of a crash.
Dealers will replace the connecting cable and either the heating mat or entire seat cover, free of c
This bulletin is informational and contains information on the various warning lamps that may appear.
This bulletin provides information when there is an abnormal engine knocking noise from the engine compartment; V6 3.0L TFSI.
This bulletin provides information when there is an abnormal engine knocking noise from the engine compartment; V6 3.0L TFSI.
This bulletin provides informaiotn when the starter battery is discharged or defective.
This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool
This bulletin provides diagnostic information for the vehicle locking system.
This Reporting obligation requests that technicians contact the Technical Assistance Center (TAC) when the diagnostic tester refers to this reportin gobligation or to TPI 2033392.
This bulletin provides informaiton regarding the Universal Traffic Recorder.
Showing the 8 most recent of 883 technical service bulletins on file with NHTSA.
My instrument cluster and its replacements have malfunctioned multiple times. The original instrument cluster/virtual cockpit failed to boot and had a black/blank screen on 4/19/2024 at 29,687 miles a
The Audi MMI malfunctions and reboots randomly while driving. Possibly being a software issue. There is a TSB code that the dealer used to reference for me ( TSB 2078437/1), but I cannot find it on th
The MMI reboots continuously throughout my drive - whether it is 1 minute or an hour. It does this without a Bluetooth connection or wired connection. There is no ability to use hands free calling,
I am submitting a formal complaint regarding a persistent and dangerous issue with the MMI (Multi Media Interface) system in my 2020 Audi S4. Since February 2025, the system has been spontaneously reb
I am submitting a formal complaint regarding a persistent and dangerous issue with the MMI (Multi Media Interface) system in my 2020 Audi S4. Since February 2025, the system has been spontaneously reb
Showing the 5 most serious of 34 complaints filed with NHTSA.
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