Ford 1996 Taurus Manual page 130

Locking the doors with the keyless entry
system
Along with unlocking your doors, you can use
the keyless entry system to lock the doors. You
can also use the Autolock feature to
automatically lock the doors after you get in the
vehicle.
To lock all of the doors, press 7/8 and 9/0 at
the same time. It is not necessary to first enter
the keypad code. This will arm your factory
installed anti-theft system, if so equipped.
Arming, disarming and resetting your
perimeter anti-theft system (If equipped)
from the keyless entry pad
If your vehicle is equipped with the optional
factory installed anti-theft system, the keyless
entry system will arm it when you use the 7/8
and 9/0 keys to lock the doors, and will disarm
or reset a triggered anti-theft alarm when you
enter in the five digit code to unlock the driver's
door.
NOTE: Doors and the liftgate must be fully
closed for the anti-theft system to arm.
Refer to the Anti-Theft System section
in this chapter for more details.
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