11 40 000 Checking engine oil pressure (N55)

Special tools required:

IMPORTANT: The regulated oil pump can only be checked and measured with the diagnosis system.
Vehicles with a regulated oil pump have a HYDRAULIC VALVE fitted.
Diagnosis path:

DME Digital Motor Electronics
Complete vehicle
Power train
Engine electronics
Engine oil
Oil-pressure control

Special tool 11 9 250 must be converted for N55

Necessary preliminary tasks:

Connect BMW diagnosis system to vehicle.
Observe diagnosis instructions.
Protect drive belt against dirt
Have a cleaning cloth ready to catch escaping oil

Secure special tool 11 9 250 at hexagon head in a vice.

Release insert (2) using a slotted screwdriver (1) in direction of arrow.

Fig 1: Releasing Insert Using Slotted Screwdriver

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw piece (1) on special tool 11 6 410 .

Fig 2: Identifying Special Tool (11 6 410) And Screw Piece

Courtesy of BMW OF NORTH AMERICA, INC.

Install special tool 11 6 410 in special tool 11 9 250 .

Insert central bolt with a slotted screwdriver (1) hand-tight.

Fig 3: Inserting Central Bolt Using Slotted Screwdriver

Courtesy of BMW OF NORTH AMERICA, INC.

Insert screw piece (1) hand-tight in direction of arrow on special tool 11 6 410 .

Fig 4: Inserting Screw Piece On Special Tool (11 6 410)

Courtesy of BMW OF NORTH AMERICA, INC.

Release oil filter cover with special tool 11 9 240 .

Tightening torque: 11 42 1 AZ .

Fig 5: Releasing Oil Filter Cover Using Special Tool (11 9 240)

Courtesy of BMW OF NORTH AMERICA, INC.

Carefully detach filter element.

Installation note:

Check all O-rings for damage, replace if necessary.

Fig 6: Checking O-Rings For Damage

Courtesy of BMW OF NORTH AMERICA, INC.

Install filter element (1) in special tool 11 9 250 .

Installation note:

Coat O-ring with engine oil.

Fig 7: Installing Filter Element In Special Tool (11 9 250)

Courtesy of BMW OF NORTH AMERICA, INC.

Order number for special tool: Bolt 2 212 823 with 11 4 310 .

Screw the pressure sensor (1) hand tight.

Apply light coating of oil to sealing ring at pressure sensor (1) 100 bar.

Fig 8: Applying Light Coating Of Oil To Sealing Ring At Pressure Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Measure the engine oil pressure with diagnosis system.

Order number for special tool: Screw 2 212 823 to oil filter housing.

Special tool 11 4 310 on special tool, order number: 2 212 823 .

Screw in pressure sensor (1) 100 bar at special tool 11 4 310 (finger-tight).

Connect cable (2) of IMIB (Integrated Measurement Interface Box) to pressure sensor (1) 100 bar.

Graphic N20.

Fig 9: Connecting IMIB Cable To Pressure Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Start engine and check engine oil pressure by means of diagnosis.