Hi: I have a 300 D 2.5. it is a new car for me but I notice that Climbing a Hill it goes a little High with the AC on. It almost touch a 100 C with a few seconds at 70 MPH. I pull over and notice that the 2 electrical fans was not working and also on a traffic jam I have to turn off the Ac because I found the 2 electricals fans are not working. What should I look for, And where is the sensors. Thanks for any procedure you can tell me to checks the fans. Fan clutch looks pretty OK it is Brand New.

FErnando Q