Long time listener, first time caller...

I purchased a used 2001 X5 that had an aftermarket ipod adaptor installed. In order to use the ipod, I had to switch the radio to multi cd mode, even though it only has the single cd player.

Everything was cool until I had an item repaired that required the battery to be disconnected. When I got it back, the option for multi cd mode was no longer available. I took it into the dealer and they had no idea what I was talking about. Does anyone have any ideas on how to get that option reset on my radio?

Thanks for any help.