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 ...
Security System
On Sport model
The security system helps to protect your vehicle and valuables from theft.
The horn sounds and a combination of headlights, position lights, side marker
lights and taillights flash ...
Obtaining Navigation Update Data
Honda is continually expanding the scope
of the navigation system. Navigation
system software upgrades may be made
available periodically, usually in the fall of
each year.
To purchase an updat ...