Ford Explorer 2010 Owner's Manual page 731

Driving
• Make sure the gearshift is in P
(Park).
3. Turn the key to 3 (on) without
turning the key to 4 (start).
Some warning lights will briefly illuminate. See Warning lights and
chimes in the Instrument Cluster chapter for more information
regarding the warning lights.
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2010 Explorer (exp)
Owners Guide, 2nd Printing
USA (fus)