my 2006 cdi seems to have a radio gremlin. No control over radio symptoms are : goes off and comes back on after several seconds, no control over volume or station selection when it is playing. command display is on screen when the radio is playing and when the radio goes off the screen is black. Is this a radio problem or is there some control or setting or something causing this to occur. Car has 65k mi I detect no other descrepancies. any help appreciated
TIA