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:
Correct Vehicle Position
INFO button
► Setup ►Other
►Vehicle
Manually adjust the current position of the vehicle as displayed on the map
screen if
the position appears to be incorrect.
1. Put the v ...
iPod®/USB Flash
If an error occurs while playing an iPod® or USB flash drive, you may see the
following error messages. If you cannot clear the error message, contact a
dealer.
...
Removal
Do the battery terminal disconnection procedure.
Remove the drive belt.
Remove the intake manifold.
Disconnect the alternator connector (A) and the p ...