How to bleed cooling system, MINI Cooper R56 N12 Engine

Abstract: This article describes how to bleed cooling system on R56 MINI N12 engine

Applies to: MINI Cooper N12 engine: 2007-2010

Filling and bleeding cooling system

• Before filling, turn on ignition and set heating control to maximum temperature.

• Set fan to sow setting.
• Pour in coolant slowly. - Observe filling capacities and mixture ratio.

The cooling system is vented during filling.

• Release vent screw located on thermostat housing.

• Pour in MINI coolant through expansion tank filler neck until bubble-free coolant emerges at vent screw.

• Close vent screw. Tightening torque 2 Nm (1.4 ft-lb)

• Continue topping up coolant in expansion tank to maximum level.

• Start engine and run at idle speed.

• If the level drops, top up coolant until the level no longer drops.

• Switch off engine and if necessary top up coolant to max. level.

• Close expansion tank.

• Check cooling system for leaks