Fuel Tank, Removing And Installing: Removing

WARNING: This page is about a different car, the 2022 Audi Q7, 2021 Audi Q7, and 2020 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

-- Pay attention to all safety precautions. Refer to SAFETY PRECAUTIONS .

-- Follow the guidelines for clean working conditions. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

-- Disconnect the ground cable from the battery terminal. Refer to BATTERY, DISCONNECTING AND CONNECTING .

CAUTION:

There is a risk of accident due to the heavy weight of the fuel tank.

- Drain the fuel tank before removing it.

-- Drain the fuel tank. Refer to FUEL TANK, DRAINING .

-- Open the fuel filler door.

Fig 1: The Fuel Filler Cap

Courtesy of AUDI OF AMERICA, LLC

-- Clean the area around the fuel filler neck.

-- Remove the fuel filler neck cap -arrow-.

NOTE:

Seal the fuel filler neck opening with a clean plug to prevent any dirt from getting in.

-- Remove the right rear wheel housing liner. Refer to REAR WHEEL HOUSING LINER, REMOVING AND INSTALLING .

-- Remove the fuel filler door unit. Refer to FUEL FILLER DOOR UNIT, REMOVING AND INSTALLING .

Courtesy of AUDI OF AMERICA, LLC

-- Remove the fuel filler neck bolts -1-.

-- If equipped, remove the ground wire -2- from the fuel filler neck metal ring.

-- Remove the nut -arrow- for the fuel filler neck.

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the bleeder line -1- from the EVAP canister. Disconnect the connector couplings. Refer to CONNECTOR COUPLINGS, DISCONNECTING .

Courtesy of AUDI OF AMERICA, LLC

-- Disengage and free up the bleeder line at the bracket -arrow-.

North America/China Market Versions:

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the ground wire -2- from the fuel filler neck protective plate -1-.

-- Remove the nut -arrow- for the fuel filler neck.

Continuation for All Vehicles:

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the bleeder line -1- from the EVAP canister. Disconnect the connector couplings. Refer to CONNECTOR COUPLINGS, DISCONNECTING .

-- Remove the fuel tank pressure sensor with the bracket. Refer to Fuel Tank Pressure Sensor -G400-, REMOVING AND INSTALLING, AUDI Q7 .

-- Disengage and free up the bleeder line at the bracket -arrow-.

Continuation for All Vehicles:

-- Remove the rear underbody trim panels. Refer to UNDERBODY TRIM PANELS, REMOVING AND INSTALLING .

-- Remove the diagonal braces. Refer to OVERVIEW - UNDERBODY BRACING .

-- Remove the rear section of the exhaust system. Refer to the appropriate Exhaust Information .

-- Remove the driveshaft. Refer to the appropriate Transmission Information .

-- Remove the subframe. Refer to OVERVIEW - SUBFRAME .

-- Versions with parking heater: loosen the clamp and remove the fuel hose -3- from the metering pump.

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the fuel line -2-. Disconnect the connector couplings. Refer to CONNECTOR COUPLINGS, DISCONNECTING .

NOTE:

Ignore -1-.

Q7 before Product Improvement:

Courtesy of AUDI OF AMERICA, LLC

-- Release and disconnect the fuel delivery unit connector -arrow-.

Q8 and Q7 from Product Improvement:

Courtesy of AUDI OF AMERICA, LLC

-- Release and disconnect the connectors -1 and 2-.

Continuation for All Vehicles:

-- Attach the : T40173 to the : VAS6931 and position it to support the fuel tank, as shown.

Courtesy of AUDI OF AMERICA, LLC

Fig 2: Fuel Tank Loosening Sequence

Courtesy of AUDI OF AMERICA, LLC

CAUTION:

There is a risk of accident due to the heavy weight of the fuel tank.

- Drain the fuel tank before removing it.

-- Remove the bolts -1 through 7-.

NOTE:

For clarity, the fuel tank is shown without the engine and gearbox jack.

-- Lower the fuel tank using the : VAS6931 .

Courtesy of AUDI OF AMERICA, LLC

-- Lower and remove the fuel tank by turning it in the corresponding direction.

NOTE:

When guiding out the fuel tank, pay attention to the clearance to the fuel filler neck.