Thanks, disconnecting the 12v battery seems to have fixed the problem. I was surprised that the radio presets & info center trackings [left side of dash pod] both were retained. After reconnecting both began at the starting point screen but only had to push a few buttons on the steering wheel controls or the radio touchscreen to get back to normal. I guess the problem may have been started during a Sirius update that didn't quite take for some reason, [driving thru a dead signal spot for example].