I was in my car numerous time on Sunday and the cd changer worked fine. Then I got in the car yesterday and I tried to play my cds but it kept saying "error disc 4". There wasn't a cd in #4 but I tried pressing the eject button to see if it would help but it didn't. The whole way to work it wouldn't let me play my cds-I couldn't put any in or take any out but the radio worked fine. Then I got out of work like 6 hours later and when I started the car the cd player started working all by itself. I have yet to see if it's working today. I had made an appointment to take it in but if it's working fine now I don't see a point. I just wanted to know if anyone else has had this problem.