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2020 Audi S4 Service and Repair Manual
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$29.99 USD
Unit price
Covers all 2020 S4 trims — Prestige Sedan 4-Door, Premium Sedan 4-Door, Progressiv Sedan 4-Door +2 more ·
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2020 Audi S4 Service and Repair Manual
Regular price
$29.99 USD
Unit price
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.
What's included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Wiring diagrams and electrical sections
- Powertrain, brakes, steering, suspension, HVAC and more
Trims covered
- Prestige Sedan 4-Door
- Premium Sedan 4-Door
- Progressiv Sedan 4-Door
- Premium Plus Sedan 4-Door
- Technik Sedan 4-Door
Engines covered
- 3.0L 2995CC V6 GAS DOHC Turbocharged
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
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
Consequence
A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a
Remedy
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
Consequence
Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.
Remedy
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
Consequence
A disabled passenger air bag increases the risk of injury in the event of a crash.
Remedy
Dealers will replace the connecting cable and either the heating mat or entire seat cover, free of c
This bulletin provides informaiotn when the starter battery is discharged or defective.
The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content (energy density) being reduced. This reduction in the energy content, which is due to factors. Revised header. Adde
This bulletin provides information when there is noise from the backrest of the front seat.
This bulletin provides informaiton when the windscreen/rear window washer pump is not working (B126101, B126113).
This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: A software fix is needed to correct the issue: The ODIS Audi Brand update 2.41.1 is setting a ODS5003E
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.
Showing the 8 most recent of 861 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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