Remote Entry System; Unlocking The Doors; Locking The Doors - Ford 1999 F-350 Owner's Manual

Controls and features
REMOTE ENTRY SYSTEM (IF EQUIPPED)
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 OFF
position.
If there is any potential remote keyless entry problem with your vehicle,
ensure ALL key fobs (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 five 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 five seconds. The doors
will lock again, the horn will chirp
and the lamps will flash.
If any of the doors are ajar, the horn
will make two quick chirps,
reminding you to properly close all
doors.
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