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:
Audio Remote Controls
Steering Wheel Controls
Control basic audio system functions using the controls mounted on the
steering
wheel.
■MODE Button
Cycles through the audio modes as follows:
DISC mode appear ...
Steering Rack Guide Adjustment
Special Tools Required
Locknut Wrench, 40 mm 07MAA-SL00100, 07916-SA50001, or 07AAA-TL2A100
Set the wheels in the straight ahead position.
Loosen the rack guide screw locknut ...
Carbon Monoxide Hazard
Your vehicle’s exhaust contains carbon monoxide gas. Carbon monoxide should not
enter the vehicle in normal driving if you maintain your vehicle properly and follow
the information on this page. ...