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:
If Your Vehicle Gets Stuck
If your vehicle gets stuck in sand, mud, or snow, call a towing service to pull
it out.
For very short distances, such as freeing the vehicle, you can use the detachable
towing hook that mounts o ...
Fuse Access Panel Removal/Installation
NOTE:
Take care not to scratch the dashboard or its related parts.
Do not pry on the panel surface with any tools.
Pull the fuse access panel (A) back by hand to release the ...
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 ...