Jeep 2008 Patriot - Manual (Page 249)

PARK
Supplements the parking brake by locking the transmis-
sion. The engine can be started in this range. Never use
PARK while the vehicle is in motion. Apply the parking
brake when leaving the vehicle in this range. Always
apply the parking brake first, and then place the shift
lever in the PARK position.
WARNING!
Unintended movement of a vehicle could injure
those in and near the vehicle. As with all vehicles,
you should never exit a vehicle while the engine is
running. Before exiting a vehicle, you should always
shift the vehicle into PARK, remove the key from the
ignition, and apply the parking brake. Once the key
is removed from the ignition, the transmission shift
lever is locked in the PARK position, securing the
vehicle against unwanted movement. Furthermore,
you should never leave unattended children inside a
vehicle.
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