13 53 596 Replacing high-pressure fuel sensor (N54, N53)

WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

32 1 270
32 2 100

See STEERING AND WHEEL ALIGNMENT - SPECIAL TOOLS .

WARNING: Disconnect battery negative terminal (risk of fire due to short-circuiting on removal). See 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY (CONVERTIBLE) or 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY (COUPE).
Electric fuel pump starts up automatically each time door is opened!
Carry out installation work on fuel system only with coolant temperature below 40°C.

Wear protective goggles.

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 intake acoustic cover . See 11 00 REMOVING AND INSTALLING/REPLACING IGNITION COIL COVER (N54) .

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 high-pressure rail (3) if necessary with a matching plug from special tool kit 32 1 270.

Fig 1: Identifying Plug, High-Pressure Sensor And 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.