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. Refer to 17 00... Follow instructions for working on cooling system .
After adding coolant, vent cooling system and check for leaks. Refer to 17 00 039 Bleeding cooling system and checking for water leaks .

Draining coolant:

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

Fig 1: Removing Pressure Relief Cap

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Courtesy of BMW OF NORTH AMERICA, INC.

Remove underbody protection. Refer to 51 47 490 REMOVING AND INSTALLING/REPLACING FRONT UNDERBODY PROTECTION (ENGINE) .

Disconnect lower hose connection on radiator (1).

Fig 2: Disconnecting Coolant Hose

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Courtesy of BMW OF NORTH AMERICA, INC.

Drain, catch and dispose of coolant.

Reattach coolant hose (1).

Release vent screw (1) in heating distributor pipe.

Fig 3: Releasing Heating Distributor Pipe Vent Screw

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Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 17 00 1AZ. Refer to COOLING SYSTEM - TIGHTENING TORQUES .

Release vent screw (1) in upper radiator hose.

The cooling system is vented during filling.

Fig 4: Releasing Upper Radiator Hose Vent Screw

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Courtesy of BMW OF NORTH AMERICA, INC.

Adding coolant:

Pour coolant into expansion tank (1).

Fig 5: Filling Expansion Tank

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Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down vent screws as soon as coolant emerges.

Tightening torque 17 00 2AZ. Refer to COOLING SYSTEM - TIGHTENING TORQUES .

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.