17 11 100 Removing and installing/replacing the coolant expansion tank (N63 B40/44 O 1)

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Necessary preliminary tasks

Drain COOLANT .
Remove WHEEL ARCH COVER (REAR SECTION) front left

Release screws (1).

Tightening torque 17 10 2AZ .

Unlock connector (1) on coolant level switch and disconnect.

Fig 1: Identifying Connector On Coolant Level Switch And Screws

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Pull expansion tank (1) forward.

Release and disconnect coolant hoses (2).

Release and disconnect coolant hoses (3).

Feed out expansion tank (1) toward the front and remove.

Fig 2: Removing Expansion Tank

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Assemble engine.

Top up COOLANT .

Check cooling system for LEAKS .