FORD 1998 Expedition - Manual (Page 108)

gear, and will shift to 1 (Low) after
vehicle decelerates to the proper
speed.
CONTROL-TRAC AUTOMATIC
FOUR-WHEEL DRIVE SYSTEM
(IF EQUIPPED)
Your 4x4 features a heavy-duty
Control-Trac system, including a
computer-operated transfer case.
Coupled with a
center-disconnected front axle, this
unique system is interactive with
the road, continually monitoring
and adjusting torque delivery to
the front and rear wheels to
optimize vehicle control.
Positions of the Control-Trac
system
The Control-Trac A4WD system
functions in four modes:
• 2H position delivers power only
to the rear axle.
• A4WD position delivers power
to the rear axle. If the rear
wheels lose traction, power will
be automatically delivered to the
front axle to maintain traction
throughout the slippery
condition.
• 4H position provides
mechanically locked four-wheel
drive power delivery to front
and rear axles.
• 4L position provides
mechanically locked four-wheel
4H
2H
A4WD
4L
Driving
108