Removing the intake plenum

Preliminary work 

• Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
• Refer to REMOVING THE ACOUSTIC COVER .
• Refer to REMOVING THE SEAL FOR THE HOOD REAR .
• Refer to REMOVING LEFT AND RIGHT WIPER ARM .
• Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
• Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
• Refer to REMOVING THE COWL COVER .
• Refer to REMOVING THE TENSION STRUT AT THE SHOCK TOWER ON THE LEFT AND RIGHT .
• Refer to REMOVING THE FIRE WALL UPPER PART .
• Refer to REMOVING ACOUSTIC COVER AT REAR .
• Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
• Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
• Refer to REMOVING BOTTOM LEFT FRONT WHEEL ARCH COVER .
• Refer to DRAIN THE COOLANT FROM THE LOW-TEMPERATURE COOLING SYSTEM .
• Refer to CONNECTING THE COOLANT HOSE TO THE AUXILIARY COOLANT PUMP .
• Refer to REMOVING THE DME CONTROL UNIT .
• Refer to REMOVING THE INTEGRATED POWER SUPPLY MODULE (PDM) .
• Refer to REMOVING CONTROL UNIT BRACKET .
• Refer to REMOVING TANK VENT VALVE .

• Unlock plug connection (1) and disconnect.
• Unlock plug connection (2) and disconnect.
• Unlock and loosen clamp (3).

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• Remove screws (arrows).
• Feed out charge air line (1) and place to one side.

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• Loosen screw (1).
• Guide tank ventilation line (2) out of clamp (3) and remove it.

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  NOTE: TECHNICAL INFORMATION  The tension rod screws and mounting bolts from the connecting neck on the intake plenum are not  allowed to be opened.
• Do not  release screws (1).

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• Release the clamping collar (1) with the special tool 0 495 794 (17 2 050). 
• Guide out the coolant hose (2) and remove it.
• Catch and dispose of escaping coolant.
• Unlock the locks (arrows).
• Feed out the wiring harness section (3) for the sensor system 2 and set it aside.

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• Unlock lock (1).
• Thread out holder (2) and set aside.

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• Unlock plug connection (1) and disconnect.
• Loosen screw (2).

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• Unlock the locks (arrows).
• Feed out the wiring harness section (1) for the injectors and ignition coils and put to one side.

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• Loosen clamp (1).
• Feed out the wiring harness section (2) for the injectors and ignition coils and put to one side.

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• Guide tank ventilation line (1) out of clamp (2) and place it aside.

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• Loosen clamp (1).
• Feed out the wiring harness section (2) for the sensor system 1 and set it aside.

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• Loosen screw (1).

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• Unlock plug connection (1) and disconnect.

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• Unlock the locks (arrows).
• Feed the tank ventilation line (1) out and set it aside.

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• Unlock and release the coolant feed line (1).
• Catch and dispose of escaping coolant.

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  NOTE: TECHNICAL INFORMATION  Additional coolant can leakage. Make sure that no coolant enters the intake port of the cylinder head.
• Loosen screws in the order (5) to (1).
• Guide out the intake plenum (A) and remove it.

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• Empty the remaining coolant (2) from the intake plenum (1).

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  NOTE: TECHNICAL INFORMATION  The tension rod screws and mounting bolts from the connecting neck on the intake plenum are not  allowed to be opened.
• Do not  release screws in the marked area  on the intake plenum (1).

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  NOTE: TECHNICAL INFORMATION  The tension rod screws and mounting bolts from the connecting neck on the intake plenum are not  allowed to be opened.
• Do not  release screws in the marked area  on the intake plenum (1).

  Courtesy of BMW OF NORTH AMERICA, INC.