13 53 594 Replacing fuel low-pressure sensor (N63)

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NOTE: On vehicles until 31/09/2011, the fuel low-pressure sensor can only be exchanged with the fuel delivery line.

Remove FUEL DELIVERY LINE .

WARNING: Disconnect NEGATIVE BATTERY TERMINAL (risk of fire due to short circuit on removal).
Electric fuel pump starts up automatically when door is opened!
Carry out installation work on fuel system only with coolant temperature below 40 °C.

Wear safety goggles.

IMPORTANT: Adhere to conditions of absolute cleanliness during repair work on the high-pressure fuel system.
Introduced contaminants can cause malfunctions in the system!

Do not allow any dirt particles or foreign bodies to get into the system.
Remove all traces of dirt before removing lines or separate components.
Use only fluff-free cloths.
Seal all fuel system openings with protective caps or plugs.

IMPORTANT: Ignition coils must not be contaminated by fuel.
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail!
Cover ignition coil with suitable means.

Necessary preliminary work:

Remove left intake port. See 13...... REMOVING INTAKE DUCT (N63) and 13...... REMOVE THE INTAKE PORT (N63 B40/B44 O 1)

Recycling:

Catch and dispose of escaping fuel in a suitable container.

Observe country-specific waste disposal regulations.

Unlock connector (1) and remove.

Release fuel low-pressure sensor (2).

Tightening torque 13 53 9AZ .

Installation note:

Replace sealing ring on fuel low-pressure sensor.

Fig 1: Identifying Fuel Low-Pressure Sensor Connector

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check fuel system for tightness.

Check function of DME.