Need help with my pioneer car system

[Romagna4]

I just recently purchased a new vehicle and it came installed with a pioneer avic-7200new stereo system . The first couple weeks i had no problems. Now whenever i get into my car and turn it on, the radio comes on for about 10 seconds then it automatically switches to usb/ipod source without me doing anything. It then says its trying to initialize or synchronize and eventually tells me that device is no longer associated . Why is this happening and how do i stop this? I want to listen to the radio, i have nothing plugged into any usb port ..im getting tired of it switching automatically then me having to go back to the home screen and choose radio.
Please help, this is my first post so im not sure if im in the right area.
Thanks!

 

[toxcrusadr]

Do you have a manual for the unit? Or check the car's owner's manual? It should have all that. If not, Pioneer's website should have it.

I suspect there is a menu setting where you can choose the default source and it is set for the usb input. You should be able to change it to the radio, or maybe there is a setting for 'whatever it was when I turned it off'.

 

[tom3]

Pioneer? GM? Hit the Onstar button and ask the operator.