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2021 Audi S4 Service and Repair Manual
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$40.99 USD
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Covers all 2021 S4 trims — Prestige Sedan 4-Door, Premium Sedan 4-Door, Base Sedan 4-Door +3 more ·
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$40.99
2021 Audi S4 Service and Repair Manual
Regular price
$40.99 USD
Unit price
This 2021 Audi S4 factory service and repair manual is built around this exact year and trim lineup, so the specifications and repair sequences inside are the ones Audi published for your car, not a generic figure pulled from a nearby model year. Every S4 built this year runs the 3.0L V6 (CWGD) turbocharged gas engine, and the manual covers it in full.
Engines covered
- 3.0L V6 — DOHC, turbocharged, gasoline
- 3.0L V6 — DOHC, supercharged, gasoline
Body styles covered
- 4-door sedan
Trims covered
- Base
- Premium
- Premium Plus
- Prestige
- Progressiv
- Technik
Known issues on the 2021 S4. Four recalls are on federal record for this model year. The first covers the rear seat belt automatic locking retractors, which can deactivate early and prevent a child restraint system from securing properly. The second covers rear axle alignment that may not have been inspected after an earlier lock-nut repair, leaving uneven or premature tire wear. The third covers a broken trailing arm lock nut caused by stress corrosion, which can misalign the rear axle and lead to a loss of control. The fourth covers a software issue that can leave the rearview camera display blank in reverse, reducing rear visibility. Owners have filed 2 complaints for the year, and no technical service bulletins are logged. The factory diagnostic and repair procedures behind each of those systems are here.
From a rear axle inspection to a rearview camera fault or a seat belt retractor check, it keeps you on the OEM procedure and the correct specification for your specific 2021 S4.
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, E-Tron Sportback Quattro, Q3, Q5, Q5 Sportback, Q7
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. Owner notification letters were mailed August 27, 2021. Owners may contact Volkswagen customer s
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, A6 Sedan, A7, A8, Q5, S4 Sedan, S5 Coupe, S5 Cabrio
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 or unevenly worn tires, free of charge. Owner notification letters were mailed March 3, 2022. Owner
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 sedan, A4 Allroad, SQ5, S7, A6 sedan, S5 coupe, S4 se
Consequence
A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.
Remedy
Dealers will replace the lock nuts and, if necessary, the associated bolts, free of charge. Owner notification letters were mailed June 4, 2021. Owners may contact Audi customer service at 1-800-253
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 Coupe, A5 Cabrioleet, A4 Sedan, A4 Allroad, E-Tron Sp
Consequence
A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash.
Remedy
Dealers will update the infotainment unit software, free of charge. Owner notification letters were mailed October 25, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Volkswagen
This bulletin provides a statement regarding the bottleneck of supply for VW approved oil types VW 504.00 and VW 507.00.
This bulletin provides informion when there is intermittently no start when using start/stop.
This bulletin provides information when DTC B105A1A, B103E25 is stored in 0017; fuel tank level implausible.
This bulletin provides information when DTC B105A1A, B103E25 is stored in 0017; fuel tank level implausible.
This service information TSB provides warranty coverage information for vehicles with a broken sunroof panel.
This bulletin provides informatoinw hent here are scratches or a coating on the cover of the instrument cluster, or particles inside of the housing.
This bulletin provides information when there is a film/visible rings on the clear glass cover of the headlight when the dipped beam is switched on.
This bulletin provides informaiton when the engine is not running smoothly, misfiring.
Showing the 8 most recent of 934 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
2027 Audi S4 Service and Repair Manual2026 Audi S4 Service and Repair Manual2025 Audi S4 Service and Repair Manual2024 Audi S4 Service and Repair Manual2023 Audi S4 Service and Repair Manual2022 Audi S4 Service and Repair Manual2020 Audi S4 Service and Repair Manual2019 Audi S4 Service and Repair Manual2018 Audi S4 Service and Repair Manual2017 Audi S4 Service and Repair Manual2016 Audi S4 Service and Repair Manual2015 Audi S4 Service and Repair Manual2014 Audi S4 Service and Repair Manual2013 Audi S4 Service and Repair Manual2012 Audi S4 Service and Repair Manual2011 Audi S4 Service and Repair Manual2010 Audi S4 Service and Repair Manual2009 Audi S4 Service and Repair Manual2008 Audi S4 Service and Repair Manual2007 Audi S4 Service and Repair Manual2006 Audi S4 Service and Repair Manual2005 Audi S4 Service and Repair Manual2004 Audi S4 Service and Repair Manual2002 Audi S4 Service and Repair ManualView all Audi S4 years