Removing and installing air intake plenum (S55 engine)

Attention! 

Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .

Necessary preliminary work: 

• Disconnect BATTERY EARTH LEAD .
• Remove CHARGE AIR DUCT TO THROTTLE VALVE .
• Remove intake filter housing. Refer to REMOVING AND INSTALLING/REPLACING INTAKE SILENCER HOUSING, LEFT and REMOVING AND INSTALLING/REPLACING INTAKE SILENCER HOUSING .
• Remove CHARGE AIR COOLER .
• Remove IGNITION COIL COVER .
• Only M4 GTS:  Remove FUEL INJECTOR VALVE FOR WATER INJECTION .

Removal: 

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

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Release screws (1) on throttle body (2).

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Unlock tank ventilation line (1) and disconnect.

Unlock connector (2) and remove.

Remove throttle body (3).

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Release screw (1).

Unscrew nuts (2).

Feed out and remove intake plenum (3).

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Installation: 

Replace gaskets (1).

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Feed in and position intake plenum (3).

Screw-in and join nuts (2).

Tightening torque: 11 61 1AZ .

Screw in and join screw (1).

Tightening torque: 11 61 2AZ .

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Installation note: 

Replace sealing ring (1) of throttle body (2).

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Install throttle body (3).

Connect and lock tank ventilation line (1).

Tank ventilation line (1) must engage audibly.

Connect connector (2) and lock.

Connector (2) must snap audibly into place.

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Tighten screw (1) on throttle body (2).

Tightening torque 13 54 1AZ .

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Required follow-up work: 

• Install CHARGE AIR COOLER .
• Only M4 GTS:  Install FUEL INJECTOR VALVES FOR WATER INJECTION .
• Install CHARGE AIR DUCT ON THROTTLE VALVE .
• Install intake silencer housing. Refer to REMOVING AND INSTALLING/REPLACING INTAKE SILENCER HOUSING, LEFT and REMOVING AND INSTALLING/REPLACING INTAKE SILENCER HOUSING .
• Install IGNITION COIL COVER .
• Connect BATTERY EARTH LEAD .