Hello!


I'm having an issue with my w201 2.5 and I can't find a straight answer anywhere.


So I've read diagrams, traced electrical wires, etc. but a question remains. What switch triggers the fan clutch when the temperatures rises? Mine is always rotating (I think it's normal), but I've never been past 80ºC, so I really don't know if the switch is working, or if someone decided to short it to make the fan work permanently.


I have 2 temperature sensors, one in the thermostat housing (to show in the gauge), and other in the engine block, for the ignition. Is some of these sensors used for the fan? And how to test if the fan clutch is working?


Thanks!