Coolant: Service and Repair

17 00 005 - Draining and adding coolant (COOPER S)





Warning!
Work on the cooling system may only be carried out on the engine after it has cooled down.





Recycling:
Catch and dispose of drained coolant.
Comply with the waste disposal regulations applicable in the relevant countries.





Note:
Follow instructions for working on cooling system Instructions For Working on Cooling System.
After adding coolant, vent cooling system and check for leaks Venting Cooling System and Checking for Water Leaks.





Draining coolant:
Screw off pressure relief cap (1) on expansion tank.





Remove underbody protection Service and Repair.
Disconnect lower hose connection on radiator (1).
Drain, catch and dispose of coolant.
Reattach coolant hose (1).





Release vent screw (1) in heating distributor pipe.
Tightening torque 17 00 1AZ [1][2]17 00 Coolant System Components.





Release vent screw (1) in upper radiator hose.
The cooling system is vented during filling.





Adding coolant:
Pour coolant into expansion tank (1).
Tighten down vent screws as soon as coolant emerges.
Tightening torque 17 00 2AZ [1][2]17 00 Coolant System Components.
Fill expansion tank up to maximum level.

Start engine and run at idle speed. Fill expansion tank if liquid level drops.
Continue running engine until liquid level stops dropping.
Switch off engine.
Fill expansion tank up to maximum level.





Note:
Before filling, turn on ignition and set heating control to maximum temperature.
Set fan to sow setting.
Add coolant slowly.
Use only approved coolant, refer to BMW operating fluids in Main Group 17.