I have a 2005 S40 with the optional factory 6-CD changer (12 spkrs, 325 watts total). The system sounds great, but there were intermittent times when the changer couldn't mechanically switch between cd's. You could hear it trying, then give up with an error code. Eventually, the unit would succeed - until now. My cd player now says "deck error" and it hasn't been able to mount a cd. I took it to the dealer and they're going to replace it (I'm 21.5 k into my warranty). Has anyone else had a similar issue? I'm hoping that maybe this was just an early generation problem and the replacement will have a longer life.