Has it been cold where you live? If it is, that could be the problem. My 2000 Jetta does not like the cold at all, and has all sorts of phantom problems like the alarm arming, but with no sound. Most frequently, Jetta's CD player (the 6-changer mounted in the trunk) throws CD errors or NO DISC messages for no good reason when the temperature outside drops below 35 degrees farenheit (I live in Alabama, and we have about six months worth of 30-degree mornings). I think I've even seen the CHECK MAGAZINE error come on. The only way I have figured out how to fix it is to turn off the CD player or set it to Radio, take the magazine out, take out the offending CD or CDs, place them back in, and place the magazine back in. That seems to clear it up. Hope this helps a smidge! Even if your CD player is mounted in the dashboard, it may also be subject to problems when the temperature dips. Good luck!!! :)