Today the Sirius icon is missing from the audio source menu. Selection the setting wrench from the source screen does not bring up any Sirius setting options either. Before this happened I had the following options in the source menu; radio, sirius, cd, usb, bluetooth streaming. Now the Sirius option is totally missing. I assume this means the Sirius Tuner has died or connection worked loose? Up to this point I have been enjoying Sirius without issues. Any thoughts?