Based on the message that I got when I disconnected the fibre optic cable from my cd changer, which inclluded the cd unavailable phrase, it seems likely that you have somehow lost communication between the changer and the head unit, and the simplest thing to do is a system reset, see Richard Hamiltons reply a few posts back for how to do this, but having credited Richard with the know how, you press 1, 4 and 8 simultaneously. If this doesn't work, and I have to admit that first time aorund it didn't work for me, check the fibre optic and electrcal connections. It is the work of about ten minutes to remove five self tapping screws and a couple of "dzus" fasteners to remove the covers and reveal the mounting for the cd changer. On mine the connections are underneath. When I examined the fible optic plug, (two orange fibre optic cables) the was a steady red on one and no visible signal on the other. Inside the socket was a flashing red and no visibe signal. Fibre optics can be set up in a number of ways so I was not concerned about the absence of visible signals I just took it to mean that that was how it was designed to work. I plugged the fibre optic back in an did another system reset. When I did this after the disconnection, the system reset and gave the message load magazine, after a few seconds I was able to select "cd list" and am now able to lisren to cds; however it is proving to be a bit temperamental. On the trip up to Droitwich, I had all 6 cds, then cd 5 dropped off the list, so I swapped some around in the magazine then I could only access cd 1, and after several maagazine ejections I can access 1 and 3; I am going to do a system reset and see what happens.