Using The Control-Trac System; Shifting Between 4Wd Auto And 4Wd High; Shifting From 4Wd Auto Or 4Wd High To 4Wd Low - Mercury 1999 Mountaineer Owner's Manual

Driving
If your vehicle is equipped with 4WD or AWD, a spare tire of a
different size than the road tires should never be used. Such a
tire could result in damage to driveline components and make the
vehicle difficult to control.
Utility and four-wheel drive vehicles are not designed for
cornering at speeds as high as passenger cars any more than
low-slung sports cars are designed to perform satisfactorily under
off-road conditions. Avoid sharp turns or abrupt maneuvers in these
vehicles.

Using the Control-Trac system

Shifting between 4WD AUTO and 4WD HIGH

When you move the control to 4WD
HIGH, the indicator light will
illuminate in the instrument cluster.
When you move the control to 4WD
AUTO, the indicator light will turn
off.
Either shift can be done at a stop or
while driving at any speed.

Shifting from 4WD AUTO or 4WD HIGH to 4WD LOW

1. Bring the vehicle to a stop.
2. Depress the brake.
3. Place the gearshift in N (Neutral).
4. Move the 4WD control to the
4WD LOW position.
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