The cooling system of your Bmw heavily relies on the thermostat so as to work properly. A functional Bmw thermostat is very important in making sure the engine has enough anti-freeze to avoid overheating.
Just like other components, Bmw thermostats will eventually break down. A possible sign that you must replace your Bmw ‘s ”thermometer” is if it gets stuck in open or close position, triggering an engine temperature warning light to malfunction; whatever happens, the car’s cooling system is surely to suffer and cause more serious engine issues. Rusty patches are definitely typical troubles especially if water trickles into the thermostat’s steel parts. You’ll have to buy a new component if it’s worn out.