Fuel Filter: Service and Repair

16 14 017 - Removing and installing/replacing fuel filter with fuel level sensor





Special tools required:
- 16 1 020 16 1 020 Pin Wrench





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.





Necessary preliminary tasks:
- Draw off fuel from fuel tank Procedures
- Remove rear seat bench Rear Seat - Normal

After completing work:

- Check repumping function of suction-jet pump Checking Repumping Function of Suction-Jet Pump With BMW Diagnosis System





Fold carpet (1) forwards.

Detach insulating mat (2) at perforation and fold back towards rear, pop out rubber plugs here.

Fold back rubber mat.





Important!
Do not damage gasket.

Release nuts (1) and fold back metal cover.





Important!
Fuel line is pressurized.

Catch escaping fuel in a suitable container.





Disconnect plug connection.

Release and disconnect feed line (1).

M57TU:

Release and disconnect feed and return lines.





Important!
Fuel gauge must roughly indicate zero before the left tank opening is opened.

If the suction jet pump is faulty, the fuel level in the left tank half may be above the service opening!

Large quantities of fuel may emerge on opening!

In this event, keep left tank half closed and feed extraction hose through right service opening to left tank half.





Release screw cap with special tool 16 1 020 16 1 020 Pin Wrench.

Installation:
Tightening torque 16 14 2AZ 16 14 Fuel Pump.





Important!
Risk of breakage!

Carefully raise fuel level sensor until sensor flange projects out of tank opening. In so doing, do not pull excessively on connecting piece of fuel return.

Installation:
Replace rubber gasket.

When installing fuel level sensor, make sure that lug (1) engages opening (2) in fuel tank.

Fit screw cap without using a tool and tighten hand-tight.

Then tighten screw cap with special tool 16 1 020 16 1 020 Pin Wrench until notch (3) points to marking (4).





Important!
Look out of escaping fuel.

Catch fuel in a suitable container.

Carefully remove left sensor unit from tank.

Disconnect line (1) to fuel filter.





Disconnect line (1) to fuel filter and seal off at fuel filter.

Disconnect suction jet pump from fuel filter.

To do so, press catch (2) downwards and detach suction jet pump.





E60/M57TU only:

Carefully remove left sensor unit from tank.

Unlock line (1).

Pull suction jet pump out of holder.

To do so, press catch (2) downwards and detach suction jet pump (2).





Unlock and disconnect plug (1) of hose pack.

Note:
Release plug by pressing lock and disconnect.





Replacing fuel level sensor:

Unlock plug (2) and press out in direction of arrow.

Release catches (1) and pull fuel level sensor out of unit.

Disconnect cable from pressure regulator and feed out of cable gland.