Removing and Installing/Replacing Fuel Gauge Sensor (Diesel, Left, With Delivery Unit)

16 12 001 - Removing and installing/replacing fuel gauge sensor (diesel, left, with delivery unit)





Recycling
Fuel escapes when fuel lines are detached. Have a suitable collecting container ready.
Catch and dispose of escaping fuel.
Observe country-specific waste-disposal regulations.





Important!
Ensure adequate ventilation in the place of work!
Avoid skin contact (wear gloves)!
Ensure absolute cleanliness when working on the open fuel tank.
Contaminants in the fuel tank can impair driving operation or may even result in vehicle breakdown!
Before starting the engine for the first time:
- Fill fuel tank with at least 5 liters of fuel
Check transfer function of suction jet pump Testing and Inspection.





Necessary preliminary tasks:
- Draw off fuel from fuel tank Procedures
- Remove rear seat bench
- Remove right sensor unit Removing and Installing/Replacing Fuel Gauge Sensor (Diesel, Right)





For vehicles with 2 seat rows only:
Disconnect plug connection (1).
Remove cover (2).





Release nuts (1) and remove cover for service opening (2) from left side of fuel tank.





Disconnect plug connection (1).
Unlock quick-release fastener (2) and detach fuel feed line.
Unlock quick-release fastener (3) for vent line and detach.





Release completely remainder of torque breakoff head (1) with a screwdriver.
Remove hose clamp from clamping ring (2).

Note:
A flexible extension can be used to release the hose clamp,

Press clamping ring (2) part at open end in direction of arrow and remove.





Installation:
Make sure that service cover is installed in correct position.
Indentation (2) on clamping ring must line up with raised section (1) of tank.
Pin on service cover (3) must line up with indentation on clamping ring.
Hose clip with torque breakoff head (4) must always be replaced.
Tighten hose clip until torque breakoff head (4) breaks off.





Installation:
Seal (1) must always be replaced.





Attach an auxiliary lead (1) to hose pack (2) through service opening.
The auxiliary lead is pulled through with the hose pack towards the left and facilitates subsequent reinstallation.

Installation:
Make sure when pulling through the hose pack that the tank ventilation system in the tank tunnel is not damaged.





Remove sensor unit (1) from fuel tank.
Feed sensor unit (1) with hose pack out of fuel tank.

Installation:
When replacing the sensor unit, modify the end of the auxiliary lead to the new hose pack and carefully pull in through the tank.

Note:
Illustration shows the tank removed.





Installation:
Secure corrugated tubes (1) with hose band.
Corrugated tubes (1) must not abut plastic foot (2).