The sensor controls the fan but more importantly it controls the ecu for the fuel injection.
Bmw water temperature sensor.
I ve done this tutorial on my e92 320i.
Explains and demonstrates how to replace the outside temperature sensor.
Remove the coolant temperature sensor.
Here is tutorial on how to check and monitor bmw coolant water temperature on board screen.
Clean the hole where the sensor is located.
Repair and replacement of the temperature sensor.
How to change the temperature sensor on a bmw k75 100.
How to replace temperature sensor on bm our website.
Using a drive socket and extension and the correct sized socket usually 19mm loosen the sensor from the engine block and remove it entirely.
Bmw e90 2006 330i keep losing coolant replaced expansion tank now no visible leaks but temperature low coolant light keeps coming on and engine still keeps over heating could it be the water pump or temperature sensor also notice bubbles when topping coolant up and coolant keeps increasing and decreasing does it need bleeding.