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:
Immobilizer System Description
The vehicle is equipped with a Type VII immobilizer system that disables the
vehicle unless a programmed ignition key is used.
This system consists of a transponder combined with a keyless transmit ...
System Controls
...
Bluetooth® HandsFreeLink®
This section describes how to operate Bluetooth® HandsFreeLink®. You
can place and receive phone calls using your vehicle’s audio system
without handling your cell phone.
PHONE button
Select ...