Ford E150 2002 Owner's Manual page 98

Locks and Security
Changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to
operate the equipment.
The remote entry system allows you to lock or unlock all vehicle doors
without a key.
The remote entry features only operate with the ignition in the LOCK
position.
If there is any potential remote keyless entry problem with your vehicle,
ensure ALL remote entry transmitters are brought to the dealership,
to aid in troubleshooting.
Unlocking the doors
Press this control to unlock the
driver's door. The interior lamps will
illuminate.
Press the control a second time
within three seconds to unlock all
doors.
Locking the doors
Press this control to lock all doors.
To confirm all doors are closed and
locked, press the control a second
time within three seconds. The
doors will lock again and the horn
will chirp.
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