Draining and Adding Coolant (M54, M56)

Draining And Adding Coolant (M54, M56)

Warning!
Danger of scalding!
These tasks on the cooling system should only be carried out on an engine that has cooled down!

Recycling
Catch and dispose of drained coolant.
Observe country-specific waste-disposal regulations.

Note:
Follow instructions for working on cooling system.
Use only recommended coolant.

Draining coolant:





Open cap (1) on coolant expansion tank.

Remove reinforcement plate.





Remove front underbody protection.

Grip radiator adjusting screw (2) and undo drain plug (1) on radiator at bottom.

Drain, catch and dispose of coolant.

Installation:
Replace sealing ring.
Tightening torque 17 1 1 2AZ





Open drain plug (1) on engine block.

Drain, catch and dispose of coolant.

Installation:
Replace sealing ring.
Tightening torque, 11 11 5AZ

Adding coolant:
The procedure is described in the section Venting cooling system and checking for leaks.