13 53 594 Replacing fuel low-pressure sensor (N54, N54T)

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
00 7 300

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.

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.

IMPORTANT:

Fuel escapes when fuel lines are detached. Catch and dispose of escaping fuel in a suitable container. Observe country-specific waste disposal regulations.

Necessary preliminary tasks:

Remove throttle body. See 13 54 030 Removing and installing/sealing throttle valve assembly (N54) .

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

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

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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)

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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.