16 12 000 Removing and installing or replacing fuel gauge sensor (petrol/gasoline, right)
Recycling
Fuel escapes when fuel lines are detached. Have a suitable collecting vessel ready.
Catch and dispose of escaping fuel.
Observe country-specific waste disposal regulations.
Avoid skin contact (wear gloves)!
When performing repair work on the open fuel tank, work with a clean environment. Dirt contamination in the fuel tank can lead to driving impairments or to vehicle failure.
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 .
Necessary preliminary tasks:
- DRAW OFF FUEL FROM FUEL TANK
- Remove seat bench . See 52 26 005 REMOVING AND INSTALLING/REPLACING REAR SEAT or 52 26 000 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT REAR SEAT (FOR 3RD SEAT ROW) on vehicles with a 3rd row of seats
For E70 without 3rd row of seats only:
Only unclip seat bench (1) as shown on the left and right and fold up in direction of arrow.
Secure seat bench on front seat (2).
If necessary, disconnect plug connection (1).
Remove cover (2).
Release nuts (1) and remove cover for sensor opening (2) from right side of fuel tank.
Disconnect plug connection (1).
Unlock quick-release fastener (2) and detach vent line.
If necessary, unlock quick-release fastener (3) for fuel delivery line of auxiliary heater and detach.
If necessary, disconnect plug connection (4) for auxiliary heater fuel pump.
Measure gap dimension (A) at clamping ring (1).
Release hose clamp (2) and remove from clamping ring (1).
Press clamping ring (1) apart at open end and remove.
Installation note:
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 clamp (4) must always be replaced (pay attention to correct position).
Tighten hose clamp until clamping ring gap dimension is obtained.
Installation note:
Seal (1) must always be replaced.
Disconnect ground cable (1) towards top.
Carefully raise service cover.
Unclip plastic tube (1).
Unlock and disconnect snap fastener (2).
No fuel is permitted to get into the interior!
Remove fuel pump.
With fuel pump removed, disconnect plug connection (1) in tank and replace ground cable (2).
Unclip fuel level sensor (1) in direction of arrow from housing and then slide out of guides (2) in direction of arrow.
Installation note:
Fuel level sensor (1) must be felt and heard to snap into place.
Disconnect plug connection (1) and disengage cable (2) from guides.