2003 Audi A6 Service and Repair Manual

This manual is built specifically for the 2003 Audi A6 and its 3.0L V6 (engine code AVK), covering the OEM procedures and specifications for this exact configuration rather than a generic A6-era printout.

Engines covered

• 3.0L V6 — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan

Trims covered

• Base
• Confort
• Luxury

Known issues on the 2003 A6. Seven recalls are on federal record for this model year. Two cover the fuel tank rollover valve, where aging plastic and bending stress from the aluminum ventilation line can crack the valve nipple and leak fuel near an ignition source. Two cover the fuel pump, where a change in the electric motor components can leave the pump inoperative and stall the engine without warning. Two cover the electrical system: a headlight switch connector short that can lead to overheating or fire, and a knee bolster that can press against that same wiring harness and short it, risking a fire in the left dashboard area. The seventh covers a driver's side air bag igniter that may not have been properly assembled and would not activate the air bag in a crash. Owners have filed 71 complaints for the year. The factory diagnostic and repair procedures behind each of those systems are here.

Whether you're inspecting the fuel tank rollover valve, testing the fuel pump for the stalling condition, or tracing the headlight switch wiring near the knee bolster, it keeps you on the OEM procedure and the correct specification for your specific 2003 A6.