Ford Windstar Owner's Manual page 94

Liftgate Window Features
Rear Window Defogger (If equipped)
The defogger for the rear liftgate window clears frost, fog, or
thin ice from both the inside and outside of the rear window.
The defogger operates with the ignition in the ON position.
The control switch is located on the instrument panel to the
right of the steering column and below the climate control
system.
The rear defogger switch
To defrost the rear window:
Clear any snow or ice from the rear window.
1.
Get in your vehicle and start the engine.
2.
Press the rear defogger switch.
3.
The defogger turns off automatically after 10 minutes. If the
window is not clear, turn the defogger on again. It will
automatically shut off anytime the engine is turned off or if the
switch is depressed a second time.
Controls and Features
93