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 Bracket 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 ...
Installation
Install the damper rubber mount (A) onto the damper unit. Position the
damper assembly (B) between the body and the axle beam.
NOTE: Be careful not to damage the body.
...
Taking a Detour
DEST button (when en route)
►Detour
Calculate a detour route manually. The system attempts to calculate a new
route by
avoiding the next 5 miles (while on a freeway) or 1 mile (while on a ...