17 51 001 Removing And Installing/Replacing The Left Charge Air Cooler (N63 B40/B44 O 1)

WARNING: Risk of scalding!
Only perform this repair work after engine has cooled down!

Necessary preliminary tasks:

Remove ACOUSTIC COVER .
Remove front UNDERBODY PROTECTION .
Remove FAN COWL .
FOLLOW instructions for repair work on the cooling system.

Release clamp (1).

Tightening torque: 13 71 8AZ .

Release clamp (2).

Replace clamp (2).

Remove left charge-air duct (3).

Installation note:

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

Fig 1: Clamp And Charge-Air Duct

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IMPORTANT: When loosening the coolant hoses from the charge air cooler, make sure that the connector remains connected to the throttle body. Coolant may not penetrate the plug connection at the throttle body.

Disconnect coolant hoses from charge air cooler using PINCH-OFF TOOLS (to prevent coolant from escaping).

Catch and dispose of escaping coolant.

Release and disconnect coolant hoses (1).

Remove tank vent valve (2) from charge air cooler.

Fig 2: Coolant Hoses And Tank Vent Valve From Charge Air Cooler

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Unlock connector (1) and remove.

Release screw (2).

Tightening torque: 13 71 6AZ .

Installation note:

Screw (2) is longer than screws (3).

Release screws (3).

Tightening torque: 13 71 6AZ .

Release clamp (4) on throttle valve unit.

Tightening torque: 13 71 7AZ .

Lift out charge air cooler.

Replace faulty hose clamps.

Fig 3: Connector, Screws And Clamp On Throttle Valve Unit

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Reassemble the vehicle.

After having completed repair work, coolant level for charge air cooler and top up if necessary.