Fuel Level Sensor: Service and Repair

Removing and Installing Fuel Level Gauge Sensor

Removing, installing

DANGER: Risk of explosion as a result of fuel vapors igniting. Risk of poisoning as a result of inhaling fuel vapors. Risk of injury as a result of fuel coming into contact with skin and eyes.

- No fire, naked flame or smoking. Pour fuels only into suitable and appropriate marked containers, Wear protective clothing when handling fuel.

1 Empty fuel tank, fill

NOTE: If fuel tank is full, pump out about 8 liters of fuel

- Model 170.444/449

2 Remove luggage compartment screen
3 Lift trim panel for fuel tank in trunk
4 Unplug socket (arrow) for fuel gage sensor (B4) and pressure sensor

NOTE: only (USA):

5 Open bayonet lock of fuel gage sensor (B4)
Refer to Special Tool below

6 Take out fuel gage sensor (B4)

NOTE: Installation: replace seal (89/2). Oil to facilitate installation.

7 Install in the reverse order

Fuel Level Sensor: Service and Repair

Pronged Wrench: