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:
Honda Automobile Customer Service Contact Information
Honda Navi
American Honda Motor Co., Inc.
Honda Customer Service
Mail Stop 500-2N-7E
1919 Torrance Blvd.
Torrance, CA 90501-2746
Tel: (800) 999-1009
Fax: (310) 783-3273 ...
HFL Menus
The ignition switch must be in ACCESSORY
or ON
to use HFL.
To use HFL, you must first pair your Bluetooth-compatible cell phone to the
system while the vehicle is parked.
Phone Setup
...
Instrument Panel
Gauges/Information Display/System Indicators
Lights Reminders
System Indicators
System Indicators
System Indicators
System Indicators
...