Car: 2011 BMW X5 Diesel. Phone: Blackberry Torch. Problem: Bluetooth is synced and working. But to play the radio or ipod continuously, the Blackberry must be shut off or left at home. Otherwise, intermittently and regularly, the radio or ipad cuts out and "Ending Call" appears on the screen . It counts down for about 20 seconds and the radio or ipod comes back on. Very annoying. How do I fix this?