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2021 Audi S4 Service and Repair Manual
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$29.99 USD
Unit price
Covers all 2021 S4 trims — Prestige Sedan 4-Door, Premium Sedan 4-Door, Base Sedan 4-Door +3 more ·
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Complete repair procedures
Wiring diagrams & schematics
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2021 Audi S4 Service and Repair Manual
Regular price
$29.99 USD
Unit price
2021 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
- Base 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
- 3.0L 2995CC V6 GAS DOHC Supercharged
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. (Volkswagen) is recalling certain 2021 Audi A8, RS7, RS6 Avant, RS5 Sportback, RS5 Coupe, Q8, Q7, Q5 Sportback, S4 Sedan, Q5, A7, A6, A6 Allroad, A5 Sportback, A5 Cou
Consequence
A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a cr
Remedy
Dealers will update the infotainment unit software, free of charge. Owner notification letters were
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Volkswagen ID4, Audi A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A5 Sportback, A6 Allroad, A6 Sedan, A7, A8, E-Tron Quattro,
Consequence
An unsecured child restraint system can increase the risk of injury during a crash.
Remedy
Dealers will inspect, and replace as necessary, the middle-rear seat belt assemblies, free of charge
This bulletin provides informion when there is intermittently no start when using start/stop.
This TSB replaces Pending Service Solution (PSS) TSB 2076267: 01 PSS Engine: Starter - intermittently no restart after start stop - V6 TFS/; P06E900, P060A00.
This bulletin provides informaiotn when the starter battery is discharged or defective.
This bulletin provides information when the convenience openeing does not work.
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 informaiton when traffic jam assist is unavailable/active lane assist fault is reported in the instrument cluster.
Showing the 8 most recent of 906 technical service bulletins on file with NHTSA.
The contact owns a 2021 Audi S4. The contact stated that while driving at an undisclosed speed, the vehicle experienced a loss of automotive power. The check engine warning light was illuminated. The
2021 AUDI S4. CONSUMER WRITES IN REGARD TO NHTSA SAFETY RECALL 22V-742. THE CONSUMER IS DISGUSTED AND DISATISFIED WITH THE AUDI SERVICE DEPARTMENT PROCEDURES FOR PERFORMING THE RECALLS.
Other Years of the Audi S4
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