2021 Audi S6 Service and Repair Manual

This 2021 Audi S6 factory service and repair manual is built around this exact year and trim, so the specifications and repair sequences inside are the ones Audi published for your sedan rather than a generic figure pulled from another model year. Every S6 built this year runs the 2.9L V6 (DKMB) turbocharged mild-hybrid EV-Gas engine, and the manual covers it in full.

Engines covered

• 2.9L V6 mild hybrid (177 cu in) — DOHC, turbocharged, gasoline

Body styles covered

• 4-door sedan

Trims covered

• Base
• Premium Plus
• Prestige

Known issues on the 2021 S6. Ten recalls are on federal record for this model year. The rear seat belt automatic locking retractors may deactivate early, preventing a child restraint from securing properly and increasing the risk of injury during a crash. Rear axle alignment may not have been inspected after a related repair, allowing misalignment that causes premature or uneven tire wear and increases the risk of a crash. An incorrectly manufactured passenger air bag may not deploy properly and could eject plastic debris into the cabin, increasing the risk of injury during a crash. A broken lock nut on the rear trailing arm can misalign the rear axle, causing a loss of control and increasing the risk of a crash. A sticking fuel level sender can display an inaccurate reading, risking an engine stall due to lack of fuel and increasing the risk of a crash. A software issue can leave the rearview camera display blank when the vehicle is in reverse, reducing the driver's rear visibility. Liquid spilled in the rear seat may penetrate and shut down the gateway control module, suddenly reducing engine power and increasing the risk of a crash. An incorrectly labeled brake fluid cap can lead to the wrong type of brake fluid being used, reducing braking ability and increasing the risk of a crash. A software error can cause the instrument panel display, including the speedometer and warning lights, to fail, increasing the risk of a crash. A separate software error may prevent the rearview camera image from displaying as intended, reducing the driver's view behind the vehicle and increasing the risk of a crash. The factory diagnostic and repair procedures behind each of those systems are here.

From a rear axle alignment check to a gateway control module fault or a rearview camera diagnosis, it keeps you on the OEM procedure and the correct specification for your specific 2021 S6.