13 53 594 Replacing low-pressure fuel sensor (N54, N53)

WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

32 1 270
00 7 300

WARNING: Disconnect BATTERY NEGATIVE TERMINAL (risk of fire due to short-circuiting on removal).
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 throttle valve assembly (N54, N54T) .

Recycling:

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel in a suitable container.

Observe country-specific waste-disposal regulations.

Apply silicone-free multifunction spray (part number 83 23 0 418 567) on to supports (1) of base well bracket (2). Unplug connector (3) and (4) from base well. Slide base well (2) in direction of arrow.

Fig 1: Applying Silicone-Free Multifunction Spray On Base Well Bracket Supports

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Fig 2: Inserting Special Tools (00 7 300) In Base Well Mounting Points

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Insert special tool 00 7 300 in mounting points (1) on base well.

NOTE: Place tips of special tool 00 7 300 between retainers (2) and then center (arrow).

Detach base well (1) from bracket (2) with special tool 00 7 300.

Fig 3: Removing Base Well From Bracket Using Special Tool (00 7 300)

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock connector (1) and remove. Release low-pressure sensor (2). Tightening torque: 13 53 4AZ .

Fig 4: Identifying Plug, Low-Pressure Sensor And Line

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IMPORTANT: When releasing and tightening down sensor, grip at width across flats of low pressure line (3).

NOTE: Seal low pressure line (3) if necessary with a matching plug from set of special tools 32 1 270.

Assemble engine. Check fuel system for tightness. Check function of DME.