Originally Posted by nseah
What do you mean you get turn-by-turn without the nav package? Are you referring to say using your iphone and having SIRI's voice play through the car speakers?
No it means that by using the sync destinations application or just calling into sync services you can have sync services generate turn by turn directions which will then download through your phone's voice connection and replay through the route as long as you don't deviate from it.
If you deviate it then requires you to call back into sync services to re-calculate the route.
Its not as fast as a dedicated GPS solution, but it was included for free for the three year trial period of sync services.