I have the same problem. Bluetooth paired with phone and turn by turn works when Im not near the Bluetooth but when Im in the car where I need it - the voice does not work with the GPS. Frustrating.
I've had this problem with now two phones. I am sure there is a way to sync but I have not idea - I have looked all over for it.
If anyone can shed some light on how to sync I WOULD GREALY APPRECIATE YOUR HELP.
Thank you.