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:
Clutch Clearance Inspection (A/T)
Special Tools Required
Clutch Compressor Attachment 07ZAE-PRP0100
Inspect the clutch piston, the discs, the plates, and the end-plate for
wear and damage, and inspect the clutch wav ...
System Initialization
The navigation system must be initialized if
power to the navigation system is
interrupted for any reason (e.g., the
battery was disconnected). ...
Clutch Disassembly (A/T)
Special Tools Required
Clutch Spring Compressor Set 07LAE-PX40000
Remove the snap ring with a screwdriver.
Remove the clutch end-plate (A), the clutch discs (B) (6), the clu ...