BMW Cars 1999-06

Without Bleeder Screw


Fill the cooling system, place the heater valve in the WARM position, close the pressure cap to the second (fully closed) position. Start the engine and bring to normal operating temperature. Carefully release the pressure cap to the first position and squeeze the upper and lower radiator hoses in a pumping action to allow trapped air to escape through the radiator. Recheck the coolant level and close the pressure cap to its second position.