click/touch dial will not work

The click/touch dial will not work. The last time I used it I paused it and it turned itself off. When setting in a cradle (i.e. a unit with its own speakers or a unit to play the iPod through my home audio system), the iPod works using the remote controller. The remote controller I own do not have a full range of features; therefore, I can only play/pause/forward/reverse the iPod. I cannot change play lists or access any other feature, including the menue. Do you know what might be wrong and what it might take to fix the problem?