FORD 2003 Explorer v.2 - Manual (Page 78)

KEYS
One key operates all the locks and starts the vehicle. Always carry a
spare key with you in case of an emergency.
Your keys are programmed to your vehicle; using a non-programmed key
will not permit your vehicle to start. If you lose your dealer supplied
keys, replacement keys are available through your authorized dealer.
Refer to SecuriLock
௢ Passive Anti-Theft System for more information.
POWER DOOR LOCKS
Press control to unlock all doors.
Note: When Perimeter Alarm is
armed, this switch is disabled.
Press control to lock all doors.
Power door lock/unlock inhibit
If the interior trim switch does not
operate, see the Perimeter alarm
system in this section for more
details.
Liftgate
An additional power door lock can be accessed by opening the liftgate.
The button is located either on the top of the left-hand quarter trim
panel underneath the rear window, or on the bottom of the left-hand
quarter trim panel. Press this button to lock or unlock all the doors.
Locks and Security
78