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:
Checking and Maintaining Wiper Blades
Checking Wiper Blades
If the wiper blade rubber has deteriorated, it will leave streaks and the
metal wiper
arm may scratch the window glass ...
Radio Theft Protection
Your vehicle’s audio system will disable itself if it is disconnected from electrical
power for any reason.
To make it work again, you must enter a specific five-digit code in the preset
button ...
Parking Brake Inspection and Adjustment
Inspection
Pull the parking brake lever (A) with 196 N (20 kgf, 44.1 lbf)
of force to fully apply the parking brake. The parking brake lever should be
locked within the specif ...