Ford Windstar Owner's Manual page 266

Wheel cover removal (optional cast aluminum wheels)
Fit the hex-shaped end of the lug wrench over the wheel lug
4.
nuts and loosen them one-half turn (counterclockwise). Do
not remove the wheel lug nuts until you raise the tire off the
ground.
If your vehicle has the optional locking lug nuts, you must
use the lug nut removal tool provided with your vehicle's
tool kit.
Anti-theft lug nut
Fit the jack under the proper jacking point indicated by the
5.
notch in the bottom of the door frame panel.
266