13 53 596 Replacing high-pressure fuel sensor (N54)

WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Observe warning on cylinder head cover.

Clamp off BATTERY NEGATIVE LEAD (risk of fire due to short-circuiting 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.

IMPORTANT: Wear full face guard and protective gloves.

Fuel can emerge spontaneously at high velocity when the high-pressure line is released!

IMPORTANT: Adhere to conditions of absolute cleanliness when working 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 pipes or individual components.
Use only fluff-free cloths.
Seal all fuel system openings with protective caps or plugs.

Necessary preliminary tasks

Remove ACOUSTIC COVER .

Recycling

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel in a suitable container.

Observe country-specific waste-disposal regulations.

Unlock plug (1) and remove.

Release high-pressure sensor (2) and remove.

Tightening torque 13 53 3AZ with special tool 32 2 100.

Seal rail (3) if necessary with a matching plug from special tool kit 32-1270 PLUG .

Fig 1: Identifying Plug, High Pressure Sensor And Seal Rail

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: If reusing:

The high-pressure sensor may only be screwed back in 3 times!

Therefore mark the sensor with a blue dot each time it is screwed back in.

Assemble engine.

Check fuel system for leaks.

Check function of DME.