Make sure to clean the sensor s insert area before you reinstall the temperature sensor.
Bmw water temperature sensor.
Remove the coolant temperature sensor.
Explains and demonstrates how to replace the outside temperature sensor.
Here is tutorial on how to check and monitor bmw coolant water temperature on board screen.
I ve done this tutorial on my e92 320i.
Using a drive socket and extension and the correct sized socket usually 19mm loosen the sensor from the engine block and remove it entirely.
Repair and replacement of the temperature sensor.
But it will also work o.
Clean the hole where the sensor is located.
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.
How to change the temperature sensor on a bmw k75 100.