As of last week when I start up my Rabbit, I get a humming/buzzing noise coming from the passenger side dash. It lasts for about 15 seconds, stops for abotu 10 seconds and then starts back up for about 15-30 seconds then stops. It happens when I have the hear or AC on or off. I was thinking bad fan motor, but it doesn't matter if its on or off. Its still certified, just haven't had time to take it into the dealership, and if its something easy to fix and cheap, rather not waste my time with the dealership if I don't have to.