Hello!
Denis, Russia. Sorry for bad english...
A have Mercury Mariner Hybrid 2008 with NAVI.
NAVI didn't work in Russia because have GPS Area Restriction in hidden nivigation menu.

If i push the button "Remove GPS Area Restriction" it will be work, but until i shut down car.
So, i think NAVI have slot for pc card, where i can write current configuration

or

but it's look like my system have no pc card
Where i can find this slot? Thanks