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:
Fuel Tank Replacement
Drain the fuel tank until it is less than half full.
Reinstall the fuel tank unit without connecting the fuel tank unit 4P
connector and the quick-connect fitting (feed l ...
Resuming Your Trip
Stop your vehicle en route (e.g., to rest, stop for gas, etc.), and then
continue on
your route.
If you did not complete your route, the Continue Trip screen is displayed when
you
restart you ...
Radiator Connecting Pipe Replacement
Drain the engine coolant.
Remove the thermostat housing.
Remove the connecting pipe (A).
Install the connecting pipe with a new O-ring (B).
...