Ford Windstar Owner's Manual page 138

Do not push the keypad buttons with a key, ball-point pen,
pencil, or any other hard object since they could damage the
buttons.
Using the Keyless Entry System
To operate the Keyless Entry System, you must be familiar with
the "personal code" and the "permanent code." The personal
code is a code number that you select that is easy for you to
remember. This is the number that you enter on the keypad to
unlock the door. The personal code can be changed as often as
you like.
The permanent code is a number that is assigned to your
vehicle and can be used to program your personal code into the
system.
For your convenience, one additional piece of tape with the
permanent code has been included in the glove box. Place this
additional piece of tape in a safe location where you can refer
to it when necessary. Do not put it in any location that is
accessible to unauthorized persons, since this would allow them
entrance to your vehicle.
Programming your Personal Code
A personal code does not replace the permanent code that the
dealership gave you. The original dealer code will always work
in addition to your personal code.
To program your own code:
Select five digits for your personal code.
1.
Enter the permanent code.
2.
Within five seconds, press the 1/2 button.
3.
Within five seconds of pressing the 1/2 button, enter your
4.
personal code. Press each digit within five seconds of the
previous digit.
Controls and Features
137