Checking engine oil pressure (S55 engine)

Special tools required:

11 6 410
11 9 240
11 9 250
13 6 051
2 212 823
11 4 310

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 work:

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.

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

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

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

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

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Release oil filter cover with special tool 11 9 240.

Tightening torque: 11 42 1 AZ .

Illustration shows N52

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Carefully detach filter element.

Installation note:

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

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

Installation note:

Coat O-ring with engine oil.

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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.

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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 the 100 bar pressure sensor 0 431 592 on special tool 11 4 310 by hand.

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

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Observe diagnosis instructions.