Chrysler 1500 Owner's Manual page 46

44 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE
If one of the vehicle doors is open and the door panel
switch is used to lock the vehicle, once all open doors
have been closed the vehicle checks the inside and
outside of the vehicle for any valid Passive Entry RKE
transmitters. If one of the vehicle's Passive Entry RKE
transmitters is detected inside the vehicle, and no other
valid Passive Entry RKE transmitters are detected out-
side the vehicle, the Passive Entry System automatically
unlocks all vehicle doors and chirps the horn three times
(on the third attempt ALL doors will lock and the Passive
Entry RKE transmitter can be locked in the vehicle).
To Lock The Vehicle's Doors
With one of the vehicle's Passive Entry RKE transmitters
within 5 ft (1.5 m) of the driver or passenger front door
handles, press the door handle LOCK button to lock all
doors.
Press The Door Handle Button To Lock
Do NOT grab the door handle when pressing the door
handle lock button. This could unlock the door(s).