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:
Transmission Mount Replacement
Do the battery removal procedure.
Remove the air cleaner.
M/T model: Remove the battery cables (A) from the battery terminal fuse
box.
M/T mode ...
Start-up
The navigation system starts automatically when you turn the ignition to
ACCESSORY (I) or ON (II). At start-up, the following Confirmation screen is
displayed.
1. Select Change Language.
► ...
Voice Control Operation
1 Press and release the (Talk)
button.
A helpful prompt asks what you
would like to do. Press and release
the (Talk) button again to bypass
this prompt.
► The icon is displayed and ...