same issue here... As far as I'm concerned , nothing has changed...

Actually my car audio/ BT no longer can display and ring whenever somebody calls me... Before it showed incoming phone # and ringtone was played througout my car speakers. Not anymore. Removed and paired few times on both devices (my car BT and N9). Same thing, so unless I wont hear or see it on my N9, I dont see any incoming phone call. I believe contact sync with car BT system never worked...