HI CAN ANYONE HELP IVE JUST GOT A 2003 X5 DIESEL SPORT AND THE MONITER SCREEN FLASES ON AND OFF ABOUT EVER 60 SEC IT DOES IT ON ALL SETTING TV NAV RADIO THE SCREEN JUST GOES OFF AND THEN COMES BACK ON AGAIN THE RADIO OR TV SOUND DOES NOT GO OFF CAN ANY ONE HELP PLEASE