Vehicle fuel system Audi A6 C5

General information
The fuel system includes the fuel tank, fuel lines, fuel filter, fuel pump and injection device (separate chapter). The plastic fuel tank is located under the...

Fuel pump/fuel level sensor
On models with petrol engines, the fuel pump and fuel level sensor are installed in the fuel tank. On front-wheel drive vehicles with a diesel engine, 1.9-I...

Fuel filter
Cars with gasoline engines A description of the fuel filter for a diesel engine is given in the chapter "Maintenance". Removal Raise the vehicle and secure it...

Accelerator cable
Gasoline engine Note: Diesel vehicles do not have an accelerator cable. Instead, they have an accelerator pedal position sensor that controls the fuel pump....

Checking the fuel pump control circuit
Petrol engine 2.5-I-V6-TDI If the fuel pump does not work, the following check must be performed. To check, assemble and connect the electrical circuit...

Checking the fuel pump
Petrol engine 2.5-I-V6-TDI The fuel pump is located in the fuel tank. Safety instructions: When working on the fuel system, do not use open flames or tools...

Checking the fuel pump relay
Gasoline engine The fuel pump relay is located in the central block, located under the instrument panel on the driver's side. Relay location #4 (see fig....

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A6(C5 AR, 1999-2005)

A6(C5, 1997-2004)

A6(C4, 1994-1997)