My cel connects with the Medianav and my contacts list appears on the screen ok. However sometimes when I get in the car with the cel and I want to make a call by touching a contact instead of beginning to dial a window opens showing the number and saying "you are going to dial" and the number selected. There is nothing "touchable" on this window and after a couple of seconds it just closes with out dialing. I have to dial from the phone itself nut can then speak through the Medianav system. What's going on? Other times I get in the car and the connection works normally.