Okay, a whacky thing has been happening to my stereo. It's the Audi Bose, and it only works when it's cold -- like, 30 or below cold. During normal weather conditions, I can listen to the radio (one channel) or listen to a CD, but the display is completely off, which means I can't adjust the volume, tuner, or any other setting for that matter. But, like I said, it works completely fine when it's really, really cold out, and stops working once the car has warmed up sufficiently. Any thoughts?