This problem started a few months ago. When my Droid Razr Maxx bluetooth disconnects from my car radio, the notification tone repeats every few seconds continuously. Usually, I was able to stop the notifications by checking the notification screen or other function on the phone. Recently, that has not worked. I now have to keep Bluetooth disabled. I've been to two Verizon stores. The first said they couldn't help. The second removed the pairing and re-linked it. That did not work.