LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Fuel System >> Fuel Supply >> 20 Fuel Supply >> Fuel Tank >> Fuel Tank, Removing And Installing >> Fuel Tank, Removing, TDI Vehicles

Fuel Tank, Removing, TDI Vehicles

Special tools and workshop equipment required 

Removing

-- Follow all safety precautions. Refer to SAFETY PRECAUTIONS .

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

-- Switch off the ignition.

WARNING:

Risk of accident due to the weight of the fuel tank.

  • The fuel tank must be empty when removing it.

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

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

-- Remove the bolts -arrows- and remove the sealing flange cover -1-.

Fig 1: Sealing Flange Cover
GWWA20-11703Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connectors -1 and 3- on the sealing flange by unlocking the connector safety catch.

Fig 2: Fuel Pump Connectors
GWWA20-11704Courtesy of AUDI OF AMERICA, LLC

-- Country/Rest of World equipment versions: release the connector safety catch and disconnect the connector -2-.

-- 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 .

A4:

GWWA20-11707Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -1- and remove the reducing agent tank filler neck -3- from the fuel filler neck. Refer to the appropriate service information. .

-- Remove the fuel filler neck bolts -2-.

A5:

GWWA20-11742Courtesy of AUDI OF AMERICA, LLC

-- Remove the fuel filler neck bolts -A arrows-.

-- Remove the bolts -B arrows- and remove the reducing agent tank filler neck -1- from the fuel filler neck. Refer to the appropriate service information. .

Continuation for All Vehicles:

NOTE:

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

-- Disengage the fuel filler neck from the mount.

-- Remove the rear underbody trim panels. Refer to OVERVIEW - UNDERBODY TRIM PANELS .

-- Remove the rear section of the exhaust system. Refer to MUFFLER, REMOVING AND INSTALLING .

-- Rest of World market-specific version/equipment version: loosen the lock washer -2- and remove the fuel hose -3- from the metering pump -1-.

GWWA20-11709Courtesy of AUDI OF AMERICA, LLC
WARNING:

The fuel system is under pressure.

Risk of injury from fuel spraying out.

  • Wear protective eyewear.
  • Wear safety gloves.
  • Reduce the pressure: Place clean cloths around the connection point and carefully open the connection point.

-- Disconnect fuel lines -1 and 2-. Disconnect the connector couplings. Refer to CONNECTOR COUPLINGS, DISCONNECTING .

GWWA20-11708Courtesy of AUDI OF AMERICA, LLC

FWD Vehicles:

GWWA20-11710Courtesy of AUDI OF AMERICA, LLC

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

GWWA20-11711Courtesy of AUDI OF AMERICA, LLC
WARNING:

Risk of accident due to the weight of the fuel tank.

  • The fuel tank must be empty when removing it.

-- Remove the bolts -1 to 5-.

NOTE:

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

-- Lower the fuel tank using the Engine and Gearbox Jack :VAS6931  .

GWWA20-11710Courtesy of AUDI OF AMERICA, LLC
NOTE:

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

AWD Vehicles:

-- Equipped on some models: remove the diagonal brace. Refer to DIAGONAL BRACES, REMOVING AND INSTALLING .

-- Remove the driveshaft. Refer to the appropriate service information. .

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

GWWA20-11712Courtesy of AUDI OF AMERICA, LLC
GWWA20-11713Courtesy of AUDI OF AMERICA, LLC
WARNING:

Risk of accident due to the weight of the fuel tank.

  • The fuel tank must be empty when 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 Engine and Gearbox Jack :VAS6931  .

GWWA20-11712Courtesy of AUDI OF AMERICA, LLC
NOTE:

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