Date registered: Jul 2005
Vehicle: 99 ML430, 00 ML320, 05 E500 4matic Wagon
Mentioned: 19 Post(s)
Quoted: 973 Post(s)
Not that I am aware of.
Pulling the fuse would be the only thing I can think of. I do not have a fuse chart handy at the location I am at right now.
If you pull the fuse I am not sure it is on the same circuit as the head unit. If it is you will want to have your radio code handy.
As far as the fuse map/chart it should be on large sticker on the inside of the fuse tray cover under the hood.
I honestly believe you 6 disc changer has seen better days or I would not be leaning that way. I have never heard of a "reset" fixing the message your getting.