11 61 050 Removing and installing intake plenum (N55)

Necessary preliminary work: 

• Disconnect BATTERY EARTH LEAD .
• Remove INTAKE SILENCER HOUSING .
• Remove IGNITION COIL COVER .

Disconnect all plug connections (1) on engine control unit.

Fig 1: Identifying Engine Control Unit Plug Connections

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Open retaining clip (1).

Release wiring harness section (2) from retaining clip (1).

Fig 2: Identifying Wiring Harness Retaining Clip

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Release all wiring harness sections from holder (1).

Disconnect plug connection (2) at charging pressure sensor.

Fig 3: Identifying Charging Pressure Sensor Plug Connection

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Release all wiring harness sections from holders (1 and 2).

Fig 4: Identifying Wiring Harness Sections And Holders

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Disconnect plug connection (1) on tank vent valve.

Fig 5: Identifying Tank Vent Valve Plug Connection

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Press and hold down the unlocking device on the vacuum line (1) on the vacuum reservoir (cylinder head cover) in direction of arrow.

Detach vacuum line (1) in upward direction.

Fig 6: Unlocking Vacuum Line

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Detach vacuum line (2) in upward direction.

Fig 7: Identifying Vacuum Line

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Disconnect plug connection (1) on throttle valve drive.

Fig 8: Identifying Throttle Valve Drive Plug Connection

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Release screw (1).

Tightening torque: 11 61 2AZ .

Unscrew nuts (2).

Tightening torque: 11 61 1AZ .

Fig 9: Identifying Intake Plenum Screw And Nuts

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Installation note: 

Replace all gaskets.

Assemble engine.