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:
Adjusting the Mirrors
Keep the inside and outside mirrors clean and
adjusted for best visibility.
Adjust the mirrors before you start driving. ...
Engine Oil/Air Separator Installation
Remove all of the old liquid gasket from the oil/air separator mating
surfaces, the bolts, and the bolt holes.
Clean and dry the oil/air separator mating surfaces.
App ...
Radiator Replacement
Raise the vehicle on the lift.
Drain the engine coolant.
Disconnect the ECT sensor 2 connector (A), then remove the harness clamp
(B).
With A/C: Re ...