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:
TPMS System Description (USA models)
TPMS Control Unit Inputs and Outputs at the
20P Connector
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M/T Differential Backlash Inspection (M/T)
Place the differential assembly on V-blocks (A), and install the right
driveshaft (B) and the left driveshaft (C).
Measure the backlash of both pinion gears (D) with a dial in ...
Dust and Pollen Filter
On models with A/C
This filter removes the dust and pollen that is brought in fromthe outside through
the heating and cooling system.
Have your dealer replace the filter when this service is indic ...