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:
Information
This chapter includes your vehicle’s specifications, locations of
identification numbers, and other
information required by regulation. ...
Your Vehicle at a Glance
* 1: To use the horn, press the center pad of the steering wheel.
* 2: If equipped. ...
Engine Assembly Torque Rod Bracket Replacement
Raise the vehicle on the lift.
A/T model: Remove the shift cable cover.
Support the transmission with a transmission jack and a wood block under
the transmission a ...