Hi, I had the same sort of problem. The main interior fan would not work but the rear fans would run for a few seconds then turn off. after a scary drive to work with a frozen windscreen I decided to have a look. The interior fan is behind the glovebox. I removed the glovebox and located the fan. I removed the fan and dis-assembled it. Connecter the fan to 12v and it worked. I cleaned the contacts and retried it. It worked. I put it back together, two weeks later the fan stopped again. This time I soldered the cables to the fan. The fan has been alright for the last few months ro88o