FORD 2002 F-250 - Manual (Page 119)

4X4 LOW (4WD Low) - Uses extra gearing to provide maximum power
to all four wheels. Intended only for off-road applications such as deep
sand, steep grades or pulling heavy objects. 4L (4WD Low) will not
engage while the vehicle is moving; this is normal and should be no
reason for concern. Refer to Shifting to/from 4L (4WD Low) for proper
operation.
Shifting between 2WD (2WD High) and 4X4 HIGH (4WD High)
• Move the 4WD control between 2WD and 4X4 HIGH at any forward
speed.
Note: Do not perform this operation at speeds above 72 km/h (45 mph)
if the outside temperature is below 0°C (32°F).
Note: Do not perform this operation if the rear wheels are slipping.
Shifting to/from 4X4 LOW (4WD Low)
1. Bring the vehicle to a complete stop
2. Depress the brake
3. On vehicles equipped with an automatic transmission, place the
transmission in N (Neutral); on vehicles equipped with a manual
transmission, depress the clutch.
4. Move the 4WD control to the desired position.
• If shifting into 4X4 LOW (4WD Low), wait for the LOW RANGE light
in the instrument cluster to turn on indicating the shift is complete.
• If shifting out of 4X4 LOW (4WD Low), wait for the LOW RANGE light
in the instrument cluster to turn off indicating the shift is complete.
Driving off-road with truck and utility vehicles
4WD vehicles are specially equipped for driving on sand, snow, mud and
rough terrain and have operating characteristics that are somewhat
different from conventional vehicles, both on and off the road.
How your vehicle differs from other vehicles
Truck and utility vehicles can differ from some other vehicles. Your
vehicle may be higher to allow it to travel over rough terrain without
getting hung up or damaging underbody components.
The differences that make your vehicle so versatile also make it handle
differently than an ordinary passenger car.
Maintain steering wheel control at all times, especially in rough terrain.
Since sudden changes in terrain can result in abrupt steering wheel
motion, make sure you grip the steering wheel from the outside. Do not
grip the spokes.
Driving
119