I have a '94 Ex Sport. This morning it snowed, so I pushed the button to turn on the four wheel drive while I was in park in my driveway. It worked fine on the way there. My work is about 6 miles away, once I got there, I put it in park and pushed the button to turn off the four wheel drive (I'm not sure if you're supposed to do that before turning it off, so that's why I did). When I got off of work, I tried to push the button again, this time nothing came on...No light, and no 4X4. All I can hear is a clicking noise coming from behind the driver side in the panel where the jackstand is. Does anybody know what could be wrong?