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:
Jump Starting
Although this seems like a simple procedure, you should take several precautions.
A battery can explode if you do not follow the correct procedure, seriously
injuring anyone nearby.
Keep all spa ...
Engine Number and Transmission Number
See the image below for the locations of your vehicle’s engine number and
transmission number.
...
Flywheel Replacement
Install the ring gear holder.
Loosen the flywheel mounting bolts in a crisscross pattern in several
steps. Remove the bolts, then remove the flywheel and the ring gear holder. ...