Recently while driving and usually when making sharp right turns, the Nav and radio displays black out and reboot and I lose nav and radio connections and dropped Bluetooth calls. This has happened 4-5 times over last several months. Dealer has been unable to replicate and cannot find anything wrong with the electrical system. They suggested that I make note of what was on at the time and take a picture of the display. Only had radio on and/or was on a bluetooth call each time this happened. Has anyone had this happen to their Q50? Any ideas, suggestions as to the cause?