For the life of me I can't figure out why all of a sudden the DVD in my DVD player starts to spin noisily for about 5 - 10 seconds, when I open the door to get in my vehicle. It sounds like something is scraping around in the player when it does it. After I get in and close the door, without putting the key in the ignition, it does it again for 5 - 10 seconds. I has never done this before and I can't figure it out. Any suggestions?