My fan didn't come on like a month ago. I fooled with it for days. I even rigged it up to turn on when I turned my headlights on. We had it looked at, it was the relay. The garage said a volt meter would work, but if its something like that, they just replace it without testing. This was that "80$" fuse I was talkin about a while back, when I wouldn't let the garage touch my car.