2003 Audi S6 Service and Repair Manual

This manual is built specifically for the 2003 Audi S6, covering the 4.2L V8 (engine code BBD) as Audi documented it for this exact model and trim, so the torque values and procedures inside match your car rather than a related A6 or RS6 variant.

Engines covered

• 4.2L V8 — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan
• 4-door wagon

Trims covered

• Base
• Avant

Known issues on the 2003 S6. Two recalls are on federal record for this model year. The first covers the fuel tank assembly: aging of the plastic rollover valve combined with bending stress from the aluminum ventilation line can crack the valve nipple, and a resulting fuel leak near an ignition source could lead to a vehicle fire. The second covers the electrical system, where knee bolster contact under the dashboard can push against the headlight switch wiring harness, causing an electrical short that could originate a fire in the left dashboard area. Owners have filed 2 complaints for the year. The factory diagnostic and repair procedures behind each of those systems are here.

From a fuel tank vent line inspection to tracing the dashboard wiring harness or a routine service interval, it keeps you on the OEM procedure and the correct specification for your specific 2003 S6.