Fuel Tank, Installing, All Vehicles

WARNING: This page is about a different car, the 2024 Audi A4 allroad. However, it is still accessible from the selected car via links, so may be relevant.

Install in the reverse order of removal while noting the following:

The fuel lines as well as the wiring harness to the fuel delivery unit must be clipped onto the fuel tank.

-- Position the fuel tank with mounting straps on the underbody using the Engine and Gearbox Jack:VAS 6931 .

-- When positioning the fuel tank, make sure that the fuel filler neck is guided correctly into the opening of the body.

FWD vehicles:

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-- Tighten the bolts -1 through 5- on the mounting strap and the fuel tank.

AWD Vehicles:

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-- Tighten the bolts -1 through 7- for the mounting straps and fuel tank.

-- Install the driveshaft. Refer to DRIVESHAFT, REMOVING AND INSTALLING .

All A4:

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-- Engage the fuel filler neck on the mount.

-- TDI vehicles: install the reducing agent filler neck -3-. Refer to appropariate Repair Information .

-- Tighten the bolts -1 and 2-.

All A5:

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-- TDI vehicles: install the reducing agent filler neck -1-. Refer to appropariate Repair Information .

-- Tighten the bolts -A and B arrows-.

Continuation for All Vehicles:

WARNING:

Danger due to electrostatic charge.

After installing, check the electrical connection on the fuel filler neck threaded ring to a bare spot on the body using an ohmmeter.

Specified value: approximately 0 Ω.

-- Install the fuel filler door unit. Refer to appropariate Repair Information .

-- Install the bench seat. Refer to BENCH SEAT/SINGLE SEAT, REMOVING AND INSTALLING .

-- TFSI vehicles: connect the battery. At the same time, follow all steps after connecting the battery. Refer to BATTERY, DISCONNECTING AND CONNECTING .

-- After installing a new or completely empty fuel tank, at least five liters of fuel must be added before starting the engine.

NOTE:

Do not allow the fuel pump to run when the fuel tank is empty.

-- Country/Rest of World equipment versions: bleed the fuel line to the parking heater metering pump. Refer to FUEL LINE TO METERING PUMP, BLEEDING .

Tightening Specifications

Refer to OVERVIEW - FUEL TANK
Refer to OVERVIEW - FUEL DELIVERY UNIT/FUEL LEVEL SENSOR
Refer to OVERVIEW - MUFFLER .
Refer to appropariate Repair Information .
Refer to OVERVIEW - REAR WHEEL HOUSING LINER .
Refer to OVERVIEW - UNDERBODY TRIM PANELS .