As soon as I turn the key on my 99 e320 the electric fan on radiator is constantly on. Only shutting off when key is turned off. Is that normal? Also the outside temp is pegged at -36.

 

Would a faulty coolent temp sensor still show temp on temp guage? I guess there's no way to know for sure if its reading the right temp. But when you start it its at zero or what ever and as it warms up it climbs to 80 and stays there. Also where is the outside temp sensor located

 

There is only one fan on my car should there be more? (Only ask cause last reply called it an aux fan witch implys to me there should be a main one) my 94 c220 has 3