I have a Avic N4 with the BTB200.  I am using a Samsung Galaxy S4 phone.  I can connect to the bluetooth but it will not retain the information when I turn off the vehicle.  I need to reconnect every time.  My previous phone (HTC Evo) did not suffer this issue.  My guess is that the cell phone manufactures are moving away from older bluetooth technology and that is why my AVIC N4 does not keep a connection.  Anyone else having this problem with their phone?

Well, my fix was USER ERROR.  I forgot that you need to register the phone with the bluetooth device through the FUNCTION menu.  It had been a while since I did that.  I forgot that a user can "temporarly" connect to the bluetooth device.  But to stay connected the phone has to be registered to the unit.  Once I did that all is working perfectly.

good to know it was fixed