Ford Vehicle Owner's Manual page 181

P (Park)
Always come to a complete stop before you shift
into P (Park). This position locks the
transmission and prevents the rear wheels from
turning. To securely latch the gearshift in the P
(Park) position, pull it toward you, push it
completely counterclockwise against the stop,
and then push it toward the instrument panel.
The gearshift is securely latched in P (Park) if
you cannot rotate it in a clockwise direction
without lifting it toward you.
Always set the parking brake fully and
make sure that the gearshift is securely
latched in P (Park).
When the transfer case is in the N (Neutral)
position, the engine and transmission are
disconnected from the rest of the driveline.
Therefore, the vehicle is free to roll even if the
automatic transmission is in P (Park) or the
manual transmission is in gear.
Do not leave the vehicle unattended with
the transfer case in the N (Neutral)
position. Always set the parking brake
fully and turn off the ignition when
leaving the vehicle.
Never leave your vehicle unattended
while it is running.
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