Default Need help Bluetooth

Hi, I'm using my i9305 with the sentinel v6.oo Rom. Everything works fine. The last little problem I had is the Bluetooth notification sound when my phone is connected to my car. Approx every 2 minutes my phone plays the standard notification tone when it's connected to my car. Did everyone know how I can deactivate this?
Thanks

Gesendet von meinem GT-I9305 mit Tapatalk