Depending on the length of time the power was interrupted, your system may require GPS initialization.

If initialization is not necessary, the system proceeds directly to the Startup Confirmation screen.
If the system fails to locate a sufficient number of satellites to locate your position within 10 minutes, the following screen is displayed.

If you are experiencing GPS reception problems:
Ignition Switch
Manual transmission models
WARNING
Removing the key from the ignition switch
while driving locks the steering. This can
cause you to lose control of the vehicle.
Remove the key from the ignit ...
Listening to Voice Guidance
MAP MENU (on map)
► VOICE
As you approach each guidance point, a pop-up window is displayed on the map
screen with instructions for you to follow. Voice guidance for each guidance
point is ...
Navigation Commands
The system accepts these commands on a
map/guidance screen. ...