17 51 001 Removing And Installing/Replacing Left Charge Air Cooler (S63 B44 T 0)

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

Necessary preliminary tasks:

Remove left INTAKE FILTER HOUSING .
Drain coolant for charge air cooler.

Release clamp (1).

If necessary, replace clamp.

Fig 1: Clamp Of Charge Air Cooler

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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.

Unlock and detach coolant hose (1).

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

Release wiring harnesses (3) from charge air cooler.

Fig 2: Coolant Hose, Wiring Harnesses And Tank Vent Valve

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Unlock and pull off coolant hose (1) from charge air cooler (3).

Release screw (2).

Tightening torque: 13 71 6AZ .

Fig 3: Coolant Hose, Charge Air Cooler And Screw

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Release clamp (1).

Tightening torque: 13 71 7AZ .

Unlock connector (2) and remove.

Pull off top of charge air cooler from air duct.

Pull charge air cooler towards top out of rubber mount until connector is accessible from throttle body.

Unlock connector and pull off from throttle body.

Remove charge air cooler together with throttle body towards top.

Fig 4: Connector And Clamp

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Only on replacement of charge air cooler:

Convert THROTTLE BODY .

After completing all repair work, bleed the COOLING SYSTEM for the charge air cooler.