Thermostat opens and closes normally
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW M5, 2009 BMW M6, 2009 BMW M5, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.
This figure represents the proper working system (thermostat opens and closes as expected)
Description of the curves:
The ECT and the coolant temperature model increases until the operating temperature is reached. The thermostat is working properly.