Ford Windstar Owner's Manual page 137

Keyless Entry System (If equipped)
If you have chosen the keyless entry system option for your
vehicle, you can lock or unlock the doors and liftgate without
using a key. The keypad is above the outside door handle on
the driver's side. See also Remote Entry System which follows
this description.
The keyless entry system keypad
When you bought your vehicle, you were given a computer
code that operates the system for your vehicle. For your
convenience, we have duplicated this code in two places.
The code is:
on your owner's wallet card found in the glove compartment
taped to the computer module
When you use the keyless entry system, the illuminated entry
system turns on the interior lights for 25 seconds and the
buttons on the keypad light up for five seconds.
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