11 40 000 Checking engine oil pressure

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Special tools required:

11 4 050
13 3 061
13 3 063
13 6 051
13 6 054

NOTE: For engine oil pressure to be checked, oil pressure switch must be removed and special tools must be installed and connected.

To avoid an excess discharge of oil when removing oil pressure switch:

Unscrew oil filter cap; the engine oil flows out of the oil filter housing into the oil sump.

Installation:

Replace sealing ring.

Tightening torque. Refer to ENGINE - TIGHTENING TORQUES - 3-SERIES (E46) .

Remove oil pressure switch. See 12 61 280 REMOVING AND INSTALLING/REPLACING OIL PRESSURE SWITCH (M52TU, M54, M56)

Installation:

Tightening torque. Refer to ENGINE - TIGHTENING TORQUES - 3-SERIES (E46) .

Install special tool 11 4 050 with sealing ring (1) in place of oil pressure switch.

Fig 1: Replacing Sealing Ring & Oil Pressure Switch

Courtesy of BMW OF NORTH AMERICA, INC.

Checking engine oil pressure with DIS Tester

Attach special tool 13 6 054 with sealing ring (1) and special tool 13 6 051 and connect to DIS Tester.

Checking engine oil pressure with pressure gauge

Install special tool 13 3 063 and special tool 13 3 061 (pressure gauge).

Start engine and check engine oil pressure.

Specified value.

Fig 2: Installing Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.