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:
Identification Numbers
Your vehicle has several identifying numbers in various places.
The vehicle identification number (VIN) is the 17-digit number your dealer uses
to register your vehicle for warranty purposes. It is ...
Engine Coolant
Adding Engine Coolant
If the coolant level in the reserve tank is at or below the MIN line, add coolant
to bring it up to the MAX line.
Inspect the cooling system for leaks.
Always use Honda Lo ...
Customer Service Information
Honda dealership personnel are trained professionals.
They should be able to answer all your questions. If you encounter a problem
that
your dealership does not solve to your satisfaction, pleas ...