Fuel Delivery Unit/Fuel Level Sensor, Removing And Installing: Removing

-- Observe the safety instructions. Refer to SAFETY PRECAUTIONS .

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

-- If required, drain the fuel tank. Refer to FUEL TANK, DRAINING .

Vehicles with 48 V Electrical System:

-- De-energize the 48 V system. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Continuation for All Vehicles:

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

Audi Q7:

-- Move the front seats all the way forward into the highest position.

-- Remove the right front and rear sill panels. Refer to SILL PANEL, REMOVING AND INSTALLING .

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

-- Remove the right luggage compartment floor support. Refer to OVERVIEW - LUGGAGE COMPARTMENT FLOOR .

-- Remove the rear cover -1- for both seat rails on the front passenger seat. To do so, carefully release the tabs -3, 4 and 5- on the seat rail -2- using a screwdriver.

Fig 1: Unclipping Retaining Tabs On Cover From Seat Rail And Removing Cover

Courtesy of AUDI

-- Remove the carpet under the seat rail.

-- Remove the covers and connector station for the bench seat / single seats in the carpet.

-- Fold the carpet near the sealing flange cover to the side.

Audi Q8:

-- Remove the seat frame mount. Refer to OVERVIEW - BENCH SEAT/SINGLE SEATS .

-- Fold the carpet near the sealing flange cover to the side.

Continuation for All Vehicles:

-- Remove the bolts -1, 2 and 3- and remove the sealing flange cover.

Courtesy of AUDI

-- Release the catches -arrows- using a screwdriver and remove the Fuel Pump Control Module -J538- -item 1- from the bracket.

Courtesy of AUDI

-- Release and disconnect the connector -2- for the Fuel Pump Control Module -J538-.

-- Release the catch -2- with a screwdriver and turn the bracket -1- for the Fuel Pump Control Module -J538- counter-clockwise -arrow-.

Courtesy of AUDI

-- Disengage the bracket at the locking ring and remove.

-- Disconnect the connectors -1 and 2- on the sealing flange by releasing the connector safety catch.

Courtesy of AUDI

-- Vehicles with parking heater: disconnect the fuel line -1- to the parking heater metering pump at the sealing flange. Disconnect the connector couplings. Refer to CONNECTOR COUPLINGS, DISCONNECTING .

Courtesy of AUDI

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

-- Remove the locking ring using the Wrench - Fuel Sending Unit:T10202  .

Fig 2: Identifying Fuel Sending Unit Wrench

Courtesy of AUDI

-- Pull the sealing flange -1- slightly out of the fuel tank opening and remove the seal -2-.

Courtesy of AUDI

-- Carefully pull the sealing flange with the fuel lines out of the fuel tank opening.

-- Release and disconnect the connectors on the sealing flange.

Courtesy of AUDI

1. For the Fuel Level Sensor -G-
2. For the Fuel Level Sensor 2 -G169-

Suction Jet Line Version 1:

Courtesy of AUDI

-- Reach through the opening in the fuel tank and disconnect the suction jet line -arrow-. Disconnect the connector couplings. Refer to CONNECTOR COUPLINGS, DISCONNECTING .

Suction Jet Line Version 2:

Courtesy of AUDI

-- Reach through the opening in the fuel tank and disconnect the suction jet line -arrow-. Disconnect the connector couplings. Refer to CONNECTOR COUPLINGS, DISCONNECTING .

Vehicle with High-Voltage System:

Courtesy of AUDI

-- Reach through the opening in the fuel tank and disconnect the suction jet line -arrow-. Disconnect the connector couplings. Refer to CONNECTOR COUPLINGS, DISCONNECTING .

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

Continuation for All Vehicles:

Courtesy of AUDI

-- Reach through the opening in the fuel tank, press the catches -1 and 2- one after the other in the -direction of the arrow- and at the same time release the fuel delivery unit.

-- Carefully remove the fuel delivery unit from the fuel tank opening and free up the wiring harness.