W209 clk220 cooling fan not working

[John clk220]

I have a clk 220 it seems now that the cooling fan has stopped working, the engine temperature is correct, the temp sender has been replaced,it's been put on an OBD scanner and it is saying no signal from sensor, we run the test on OBD scanner and the fan powered up correctly any ideas?

 

[John clk220]

I have a speed sensor that needs replacing, it there any link? The faster you drive the less the fan is needed?