11 15 002 Replacing engine crankcase ventilation line for cylinders 1-4 (N63)

Necessary preliminary tasks: 

• Disconnect BATTERY EARTH LEAD .
• Remove AIR INTAKE SILENCER HOUSING on right side
• Remove INTAKE PORT .

Release screws (1).

Tightening torque 12 90 2AZ .

Remove electronics box cover (2).

Fig 1: Identifying Electronics Box Cover And Screws

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Unclip grommet hold-down device (1) and remove.

Fig 2: Identifying Grommet Hold-Down Device

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Unlock all connectors (1) from control unit and disconnect.

Detach rubber grommets (2) from electronics box. Place wiring harnesses to the side.

Installation note: 

Make sure grommets are correctly seated (watertightness).

Fig 3: Identifying Rubber Grommets And Connectors

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Slacken nut (1).

Tightening torque 12 51 1AZ .

Detach earthing cable (2).

Fig 4: Identifying Grounding Cable And Nut

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Release screw (1).

Lay filler neck (2) for windscreen washer fluid to one side.

Fig 5: Identifying Washer Fluid Filler Neck And Screw

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Release screws (1).

Tightening torque 12 90 1AZ .

Unclip coolant lines at clamp (2) from electronics box.

Fig 6: Identifying Clamp And Screws

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Carefully feed out the electronics box (1) complete with control unit upwards and place to one side.

Installation note: 

When installing the electronics box (1), insert guide (3) on engine support.

Fig 7: Identifying Electronics Box, Coolant Lines, And Guide

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Release clamp (1).

Tightening torque 13 71 8AZ .

Bend the charge air pipe (2) slightly to the side.

Check the gasket on the exhaust turbocharger. replacing if necessary.

Fig 8: Identifying Right Charge Air Hose And Clamp

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Version 1: 

1. Unlock the retainer.
2. Pull off the retainer together with the line.
   Fig 9: Removing Right Clean Air Pipe

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Version 2: 

Pull the line (1) gently in the direction indicated by the arrow.

At the same time, use a screwdriver (3) to unlock the latch mechanisms (2) one after the other.

Pull the connecting line off the clean air pipe and engine crankcase ventilation line.

Fig 10: Pulling Off Connecting Line From Clean Air Pipe

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Release screw (1).

Tightening torque 13 71 1AZ .

Pull clean air pipe (2) from exhaust turbocharger.

Fig 11: Identifying Clean Air Pipe And Screw

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Release screws (1).

Remove oil filler neck.

Fig 12: Identifying Oil Filler Neck And Screws

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1. Unlock the retainer.
2. Pull off the retainer together with the line.
   Fig 13: Unlocking Retainer And Pulling Off Ventilation Line From Intake System

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Version 1: 

1. Unlock the retainer.
2. Pull off the retainer together with the line.
   Fig 14: Unlocking Retainer And Pulling-Off Engine Ventilation Line From Actuating Wire

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Version 2: 

Pull the line (1) gently in the direction indicated by the arrow.

At the same time, use a screwdriver (3) to unlock the latch mechanisms (2) one after the other.

Pull the connecting line off the clean air pipe and engine crankcase ventilation line.

Fig 15: Unlocking Latch Mechanisms And Pulling-Off Engine Ventilation Line From Connecting Line

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Release screws (1).

Tightening torque 12 51 2AZ .

Lift the engine wiring harness (2) slightly and remove the crankcase ventilation line.

Fig 16: Identifying Engine Wiring Harness And Screws

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