This is a common problem. Put “fridge“ in the search box, check titles only, and you’ll find plenty of threads and one example of someone replaced the sensor himself with a new one.
Sensor has probably failed. I am about to replace mine. The part is £76 from Mercedes. If they struggle to find the part ask them to call James at Mercedes Tonbridge. Video on you tube ( in German but easy to understand )
Sensor has probably failed. I am about to replace mine. The part is £76 from Mercedes. If they struggle to find the part ask them to call James at Mercedes Tonbridge. Video on you tube ( in German but easy to understand )