PRINCIPLE OF OPERATION
This system is a proactive system. It has
the ability to anticipate wheel slip and
transfer torque to the rear wheels before
slip occurs. Even when wheel slip is not
present, the system is continuously making
adjustments to the torque distribution, in
an attempt to improve straight line and
cornering behavior, both on and off road.
The system automatically turns on every
time you switch the ignition on.
All components of the system are sealed
and do not require maintenance.
USING FOUR-WHEEL DRIVE
Note:When a system malfunction is
present, a warning message will be
displayed in the information display. See
Information Messages (page 91). This
means the system is not functioning
correctly and has defaulted to front-wheel
drive only. Have your vehicle checked by an
authorized dealer.
Note:A message will be displayed in the
information display when the system
overheats and switches to front-wheel drive.
This condition may occur if you operate your
vehicle in extreme high load conditions or
with excessive wheel slip, (i.e. deep sand).
To resume four-wheel drive function as soon
as possible, stop your vehicle in a safe
location and switch the ignition off. After
the system cools and normal four-wheel
drive functionality resumes, a message will
be displayed for approximately five seconds.
Note:If a warning message appears in the
information display when using the spare
tire, it should turn off after reinstalling the
repaired or replaced road tire and you switch
the ignition on.Note:It is recommended that you reinstall
the repaired tire or replace the tire as soon
as possible. Major dissimilar tire sizes
between the front and rear axles could
cause system damage or default the system
to front-wheel drive.
The system gives your vehicle some limited
off-road capabilities. Operating your
vehicle in conditions other than moderate
sand, snow, mud or rough roads could
subject it to excessive stress and heat
which could result in system damage. This
will not be covered by your vehicle
warranty.
E142669
A graphic will be displayed in the
information display to advise you of the
power distribution between the front and
rear wheels. The more the area is filled the
more power is being distributed to that
wheel.
Driving in Special Conditions With
Four-Wheel Drive
Four-wheel drive vehicles are suitable for
driving on sand, snow, mud and rough
roads and have operating characteristics
that are somewhat different from
conventional vehicles, both on and off the
freeway.
Note:It may be useful to switch Traction
control off. This allows for more wheel spin
and engine torque in certain off road
conditions or if your vehicle becomes stuck.
140
Four-Wheel Drive (If Equipped)
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TECHNICAL SPECIFICATIONS
Wheel Lug Nut Torque Specifications
WARNING
When a wheel is installed, always remove any corrosion, dirt or foreign materials
present on the mounting surfaces of the wheel or the surface of the wheel hub,
brake drum or brake disc that contacts the wheel. Make sure that any fasteners
that attach the rotor to the hub are secured so they do not interfere with the mounting
surfaces of the wheel. Installing wheels without correct metal-to-metal contact at the
wheel mounting surfaces can cause the wheel nuts to loosen and the wheel to come off
while your vehicle is in motion, resulting in loss of control.
Ib-ft (Nm)*Bolt size
100 (135) M12 x 1.5
*Torque specifications are for nut and bolt threads free of dirt and rust. Use only Ford
recommended replacement fasteners.
Retighten the lug nuts to the specified torque within 100 miles (160 kilometers) after any
wheel disturbance (such as tire rotation, changing a flat tire, wheel removal).
259
Wheels and Tires
