hello hope you can help I use the Sirius on demand feature a lot and I use it through the Bluetooth streaming on my 2012 RES radio and my Razr maxx phone but every time I shut the truck off it always goes to FM and I have to press the AUX button over and over again finally the "BT" will appear any ideas on how to keep "BT" as always on until I change it myself? Thanks for the help