sound system not workign I think stuck on ipod (even thou wasn't using on) iphone was plugged into usb to charge. none of the music options respond, no park assist or hands free phone and on/off button only flashes pic of V70 doesn't turn the system off but all menu options work and show fan in the display please help going on a road trip Friday 12 hours each way need my tunes is there a reset? or can I unhook the battery for a hard start or will that cause more problems?