Ford 1998 Windstar Owner's Manual page 99

Controls and Features
only upshift and downshift from 1st through 3rd gears. The
vehicle will always return to the overdrive operation mode
when the ignition is turned off and back on.
If the lamp does not come on when the Overdrive ON/OFF
button is depressed or if the lamp flashes when you are driving,
have your vehicle serviced at the first opportunity. If this
condition persists, damage could occur to the transaxle.
Horn
To sound the horn, press the center of the steering wheel. Check
the horn regularly to make sure it operates properly.
The horn pad
99