Ford Windstar Owner's Manual page 112

The speed control switches on the steering wheel
To set the speed control:
Find the speed control switches on the steering wheel.
1.
Press and release the ON switch.
2.
Accelerate to the desired speed above 30 mph (50 km/h)
3.
using the accelerator pedal.
Make sure you are driving faster than 30 mph (50 km/h).
4.
Press SET ACCEL and release it immediately. This will set
5.
your speed. If you keep this switch pressed, your speed will
continue to increase and will not be set at the desired speed.
Take your foot off the accelerator pedal. Your vehicle will
6.
maintain the speed you set.
If you drive up or down a steep hill, your vehicle may
momentarily slow down or speed up, even though the speed
control is on. This is normal.
Controls and Features
111