Purchased a used OEM radio. Went to dealer and had code put in. The radio, bluetooth, XM work fine but the CD player doesn't work at all. When I hit the CD/XM/Aux button it only cycles through the XM channels and doesn't even recognized the CD player at all.

I saw this question posted while doing a search but no answers. Anyone have any suggestions to try before I get another one? Are there separate fuses or anything like that?