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:
Driveshaft Removal
Special Tools Required
Ball Joint Remover, 28 mm 07MAC-SL0A202
Ball Joint Thread Protector, 14 mm 071AF-S3VA000
Raise and support the vehicle.
Remove the front wheel.
...
EPS Motor Removal and Installation
NOTE: Do not allow dust, dirt, or other foreign materials to enter the
steering gearbox.
Removal
Remove the steering gearbox.
Remove the EPS motor 3P connector (A) and the EPS ...
Break-in Period
Help assure your vehicle’s future reliability and performance by paying extra
attention to how you drive during the first 600 miles (1,000 km).
During this period:
• Avoid full-throttle starts ...