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:
Gauge Control Module Replacement
NOTE: Before replacing the gauge control module,
retrieve the ODO value and the maintenance minder information from
the gauge control module with the HDS.
Remove the instrument panel.
...
ODS Unit Replacement
Removal
Do the battery terminal disconnection procedure,
then wait at least 3 minutes before starting work.
Disconnect the passenger's side airbag harness 2P connector. ...
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 ...