Fuel Level Sensor: Service and Repair

- Observe safety measures.
- Pay attention to rules of cleanliness.


WARNING!
Fire hazard. DO NOT smoke or work near heaters or have anything in the area that can ignite fuel!


- Switch ignition on.
- Observe fuel gauge.


CAUTION!
- The fuel tank should not be more than 2/3 full. Empty fuel tank, if necessary, using an approved fuel cart.
- Determine correct radio anti-theft coding before disconnecting the battery.


Removing
- Disconnect battery Ground (GND) strap.
- Remove cover for fuel pump module flange (under luggage compartment trim).
- Disconnect harness connector for fuel level sensor and fuel pump.







- Detach blue return line and feed line.
- Use special tool 3217 to loosen sealing ring.
- Carefully pull flange out and detach.
- Unclip fuel level sensor and remove.

Installing
- Installation is in reverse order of removal.

Front-wheel-drive vehicles:
- Fuel level sensor wiring must be routed between return line and fuel tank housing.

All-wheel-drive vehicles:
- Fuel level sensor wiring must be routed between line of fuel transfer pump and fuel tank housing.







- When installing, make sure that arrows are aligned.
- Note different alignment arrows for FRONT-wheel-drive and QUATTRO