FORD 2002 Explorer v.3 - Manual (Page 198)

• The 4x4 High mode provides
four-wheel drive with full power
to both axles. It is only intended
for severe winter or off-road
conditions, such as deep snow
and ice (where no dry or wet
pavement remains uncovered),
and shallow sand.
• The 4x4 Low mode supplies
four-wheel drive with full power
to both axles and includes a
lower gear ratio for low-speed. It
is only intended for off-road
applications that require extra
power including deep sand, steep
grades and pulling a boat and
trailer out of the water.
The vehicle should not be operated in 4x4 High and 4x4 Low on
dry or merely wet pavement. Doing so will produce excessive
noise, increase tire wear and may damage driveline components.
These modes are intended for use only on consistently slippery or
loose surfaces.
If your vehicle is equipped with 4WD, 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.
Driving
198