Removing the intake plenum

WARNING: High-voltage system .
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!

All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
For additional information see: SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .
For additional information see: NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .

NOTE: TECHNICAL INFORMATION
Additional coolant can leakage. Make sure that no coolant enters the intake port of the cylinder head.

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

Preliminary work

Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
Refer to REMOVING FLAP IN LUGGAGE COMPARTMENT TRIM PANEL ON RIGHT .
Refer to DE-ENERGIZING THE HIGH-VOLTAGE SYSTEM .
Refer to CHECKING THAT NO VOLTAGE IS APPLIED .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING ACOUSTIC COVER AT REAR .
Refer to REMOVING INTAKE SILENCER HOUSING .
Refer to REMOVING TANK VENT VALVE .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE STIFFENING PLATE .
Refer to DRAINING THE COOLANT FROM THE LOW-TEMPERATURE COOLING SYSTEM .
Refer to CONNECTING THE COOLANT LINE OF LOW-TEMPERATURE COOLANT CIRCUIT .
Refer to REMOVING LOW-TEMPERATURE COOLANT EXPANSION TANK .

NOTE: RISK OF DAMAGE
Damage to wires when disconnecting connectors and plug connections .
Sheared wires can cause a short circuit .

Do not pull on wires when disconnecting connectors and plug connections.

NOTE: TECHNICAL INFORMATION
Additional coolant can leakage. Make sure that no coolant enters the intake port of the cylinder head.

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

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

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Unlock and loosen connector (1).
Unlock the locks (2).
Guide tank ventilation line (3) out of clamp (4) and remove it.

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Unlock the locks (1).
Feed the tank ventilation line (2) out and set it aside.

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Unlock the locks (1).
Guide out the wiring harness section (2) for the sensor system 2 and set it aside.

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Loosen screws (1).
Feed out charge air line (2) and place to one side.

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Unlock and loosen connector (1).
Loosen clamp (2).
Thread off coolant line (3) and place to the side.
Loosen screw (4).

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Unlock and loosen connector (1).

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

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Feed out the wiring harness section (1) for the injectors and ignition coils from the cylinder head cover (2) and put to one side.

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Loosen screw (1).

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Unlock and loosen coolant line (1).
Catch and dispose of escaping coolant.

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Unlock and loosen coolant line (1).
Catch and dispose of escaping coolant.

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Unlock and loosen coolant line (1).
Catch and dispose of escaping coolant.

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Loosen screws in the order (7) to (1).
Slightly lift the intake plenum (A) in the arrow direction.

Fig 1: Intake Plenum Screws Loosening Sequence
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Unlock and release the wiring harness section (1) for the sensor system 1 below the intake plenum (2).
Guide out the intake plenum (2) and remove it.