2008 FORD EXPEDITION wheel

Aggressive driving on any road condition can cause you to lose
control of your vehicle increasing the risk of personal injury or
property damage. The occurrence of an AdvanceTrac
with RSC event
is an indication that at least some of the tires have exceeded their
ability to grip the road; this could reduce the operator’s ability to
control the vehicle potentially resulting in an accident, personal injury,
or property damage. If you experience a severe road event, SLOW
DOWN.
If a failure has been detected within the AdvanceTrac
with RSC
system, thesliding caricon
will illuminate steadily. Verify
that the AdvanceTrac
with RSC system is not manually disabled
(push the AdvanceTrac
with RSC button located on the center stack
of the instrument panel). If thesliding caricon
still illuminates
steadily, have the system service by an authorized dealer immediately.
Operating your vehicle with AdvanceTrac
with RSC disabled may
severely reduce your ability to control your vehicle. Failure to have
your vehicle properly serviced will increase the risk of an accident,
injury, or property damage.
STEERING
Your vehicle is equipped with power steering. Power steering uses energy
from the engine to decrease the driver’s effort in steering the vehicle.
To help prevent damage to the power steering pump:
•Never hold the steering wheel to the extreme right or the extreme left
for more than a few seconds when the engine is running.
•Do not operate the vehicle with the power steering pump fluid level
below the MIN mark on the reservoir.
•Some noise is normal during operation. If the noise is excessive, check
for low power steering pump fluid level before seeking service by your
authorized dealer.
•Heavy or uneven steering efforts may be caused by low power steering
pump fluid level. Check for low power steering pump fluid level before
seeking service by your authorized dealer.
•Do not fill the power steering pump reservoir above the MAX mark on
the reservoir, as this may result in leaks from the reservoir.
If the power steering system breaks down (or if the engine is turned
off), you can steer the vehicle manually, but it takes more effort.
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If the steering wanders or pulls, check for:
•Underinflated tire(s) on any wheel(s)
•Uneven vehicle loading
•High crown in center of road
•High crosswinds
•Wheels out of alignment
•Loose or worn suspension components
Variable assist steering
Your vehicle is equipped with variable assist power steering. At low
engine RPM, steering assist will adjust to reduce efforts and improve low
speed maneuverability. At high engine RPM, the assist will adjust to
improve steering feel at high speeds.
If the amount of effort required to steer your vehicle changes while
driving at a constant engine RPM, have the power steering system
checked by your authorized dealer.
AIR SUSPENSION SYSTEM (IF EQUIPPED)
The air suspension system is designed to improve ride, handling and
general vehicle performance during:
•Certain road conditions
•Steering maneuvers
•Braking
•Acceleration
This system keeps the rear of your vehicle at a constant level by
automatically adding air or releasing air from the springs. If you exceed
the load limit, the rear air suspension may not operate. The air
suspension system will stay active for 40 minutes after the ignition is
turned off to accommodate any load changes. (The air compressor may
run when the vehicle is off; this is normal.)
The air suspension system can be enabled or disabled through the
message center. Refer toMessage centerin theDriver Controlschapter.
If the system is off, the rear air suspension will not operate and will not
raise (pump) or lower (vent) while the vehicle is not moving. However, if
the system determines that the vehicle is low or high and needs to make
a height adjustment while driving at speeds above 15 mph (24 km/h), the
system will pump or vent as required. Normal vehicle operation does not
require any action by the driver.
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On vehicles equipped with air suspension, turn the air
suspension and the ignition switch off prior to jacking, hoisting
or towing your vehicle.
LIMITED-SLIP AXLE (IF EQUIPPED)
This axle provides added traction on slippery surfaces, particularly when
one wheel is on a poor traction surface. Under normal conditions, the
limited slip axle functions like a standard rear axle.
Extended use of other than the manufacturer’s specified size tires on a
limited slip rear axle could result in a permanent reduction in
effectiveness. This loss of effectiveness does not affect normal driving
and should not be noticeable to the driver.
PREPARING TO DRIVE
Utility vehicles have a significantly higher rollover rate than
other types of vehicles.
In a rollover crash, an unbelted person is significantly more likely
to die than a person wearing a seat belt.
Utility vehicles and trucks have larger tires and increased ground
clearance, giving the vehicle a higher center of gravity than a passenger
car.
Vehicles with a higher center of gravity such as utility vehicles
and trucks handle differently than vehicles with a lower center
of gravity. Utility vehicles and trucks arenotdesigned 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, excessive speed or abrupt maneuvers in these vehicles.
Failure to drive cautiously could result in an increased risk of loss of
vehicle control, vehicle rollover, personal injury and death.
Loaded vehicles, with a higher center of gravity, may handle
differently than unloaded vehicles. Do not overload your vehicle
and use extra precautions, such as driving at slower speeds, avoiding
abrupt steering changes and allowing for increased stopping distance,
when driving a heavily loaded vehicle. Over loading or loading the
vehicle improperly can deteriorate handling capability and contribute
to loss of vehicle control and vehicle rollover.
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5. Start the vehicle and release the parking brake.
Do not drive your vehicle until you verify that the brakelamps
are working.
Always set the parking brake fully and make sure the gearshift is
latched in P (Park). Turn the ignition to the LOCK position and
remove the key whenever you leave your vehicle.
If the parking brake is fully released, but the brake warning lamp
remains illuminated, the brakes may not be working properly.
See your authorized dealer.
Driving with a 6–speed automatic transmission
This vehicle is equipped with an
Adaptive Transmission Shift
Strategy. The Adaptive Transmission
Shift Strategy offers the optimal
transmission operation and shift
quality. When the engine is turned
off, the shift data which includes the
adaptive information will be stored
automatically in the Transmission
Control Module (TCM). If the
battery is disconnected for any
reason, the stored information from
the last time the key was turned to
OFF will be read. This way, no
information will be lost with any
battery removal or battery
disconnect.
P (Park)
This position locks the transmission and prevents the rear wheels from
turning.
To put your vehicle in gear:
•Depress the brake pedal
•Start the engine
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•Provides maximum engine braking.
•Allows upshifts by moving gearshift lever.
•Will not downshift into 1 (First) at high speeds; allows for 1 (First)
when vehicle reaches slower speeds.
Forced downshifts
•Allowed in D (Drive) only.
•Depress the accelerator to the floor.
•Allows transmission to select an appropriate gear.
If your vehicle gets stuck in mud or snow
If your vehicle gets stuck in mud or snow, it may be rocked out by
shifting between forward and reverse gears, stopping between shifts in a
steady pattern. Press lightly on the accelerator in each gear.
Do not rock the vehicle if the engine is not at normal operating
temperature or damage to the transmission may occur.
Do not rock the vehicle for more than a minute or damage to the
transmission and tires may occur, or the engine may overheat.
If your vehicle is equipped with AdvanceTrac
with RSC, it may be
beneficial to turn the system off so the wheels are allowed to spin.
REVERSE SENSING SYSTEM (IF EQUIPPED)
The reverse sensing system sounds a tone to warn the driver of obstacles
near the rear bumper when the R (Reverse) gear is selected.
To help avoid personal injury, please read and understand the
limitations of the reverse sensing system as contained in this
section. The park assist is only an aid for some (generally large and
fixed) objects when moving in reverse on a flat surface at “parking
speeds”. Inclement weather may also affect the function of the RSS;
this may include reduced performance or a false activation.
To help avoid personal injury, always use caution when in R
(Reverse) and when using the reverse sensing system.
This system is not designed to prevent contact with small or
moving objects. The system is designed to provide a warning to
assist the driver in detecting objects to avoid damaging the vehicle.
The system may not detect smaller objects, particularly those close to
the ground.
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Servicing
•If the vehicle is in R (Reverse) and the screen in the rear view mirror
appears blue for three seconds and turns blank afterwards, the camera
is not working properly; have the system inspected by your authorized
dealer.
•If the image comes on while the vehicle is not in reverse, have the
system inspected by your authorized dealer.
•If the vehicle is in R (Reverse) and the screen is blank and no blue
screen is observed, the mirror is not working properly; have the
system inspected by your authorized dealer.
•If the image is not clear, then check if there is anything covering the
lens such as dirt, mud, ice, snow, etc. If the image is still not clear
after cleaning, have your system inspected by your authorized dealer.
CONTROL TRAC FOUR-WHEEL DRIVE (4X4) OPERATION
(IF EQUIPPED)
For important information regarding safe operation of this type
of vehicle, seePreparing to drive your vehiclein this chapter.
If equipped with the Control Trac 4x4 System, and 4L (4x4 LOW)
is selected while the vehicle is moving, the system will not
engage. This is normal and should be no reason for concern.
Before 4L (4x4 LOW) can be engaged, the vehicle must be
brought to a complete stop and the transmission placed in N
(Neutral).
Do not use 4H (4X4) or 4L (4X4 LOW) on dry, hard surfaced roads.
Doing so will produce excessive noise, increased tire wear and may
damage drive components. 4H (4X4) and 4L (4X4 LOW) are only
intended for consistently slippery or loose surfaces. Use of 4H (4X4) or
4L (4X4 LOW) on these surfaces may produce some noise (such as
occasional clunks) but will not damage drive components.
Your 4x4 features the heavy-duty Control Trac system which includes a
computer-operated transfer case. This unique system is interactive with
the road, continually monitoring and adjusting torque delivery to the
front and rear wheels to optimize vehicle control.
System indicator messages
The Control Trac system indicator messages display in the reconfigurable
telltale (RTT) location in the message center only under the following
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conditions. If these messages display when driving in 2H, contact your
authorized dealer as soon as possible. Refer toWarning lights and
chimesin theInstrument Clusterchapter.
•4X4 AUTO– displays when 4A is selected.
•4X4– displays when 4H is selected.
•4X4 LOW– displays when 4L is selected.
Positions of the Control Trac system
The Control Trac system functions
in four modes:
•2H (2WD)delivers power to the
rear wheels only. This is
appropriate for normal on-road
driving on dry pavement.
•4A (4X4 AUTO)provides
electronic control four-wheel
drive with power delivered to all
four wheels, as required, for
increased traction. The RTT location in the message center will
display “4X4 AUTO” when this position is selected. This is appropriate
for all on-road driving conditions, such as dry road surfaces, wet
pavement, snow or gravel.
•4H (4X4)provides electronically locked four-wheel drive power to
front and rear wheels. The RTT location in the message center will
display “4X4” when this position is selected. This position is not
recommended for use on dry pavement. This position is only intended
for severe winter or off-road conditions, such as deep snow, ice or
shallow sand.
•4L (4X4 LOW)provides electronically locked four-wheel drive when
extra power at reduced speeds is required. The RTT location in the
message center will display “4X4 LOW” when this position is selected.
This position is not recommended for use on dry pavement. Use this
position for off-road low-speed operation or when extra power is
required, such as climbing steep grades, going through deep sand or
pulling a boat out of the water.
Note:If your vehicle is equipped with AdvanceTrac
with RSC, the
AdvanceTrac
with RSC system will automatically turn off the stability
enhancement feature when you shift the Control Trac four-wheel drive
system into 4L (4X4 LOW). The brake traction enhancement feature will
still be enabled.
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The AdvanceTrac
with RSC stability enhancement system can be turned
off manually by pressing the AdvanceTrac
with RSC button (refer to
AdvanceTrac
with Roll Stability Control (RSC) Stability
Enhancement Systemin this chapter) while operating in 2H, 4A or 4H
while driving in deep sand, very deep snow or more strenuous off-road
maneuvers. This will disable the engine management feature, allowing
the vehicle to maintain full power and enhanced momentum through the
obstacle.
Utility and four-wheel drive vehicles arenotdesigned 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.
Note:The Control Trac selector knob should not be changed while the
rear wheels are slipping.
Shifting between modes
Shifting from 2H to 4A or 4H
Move the control to the 4A or 4H position at any forward speed up to 55
mph (88 km/h) or at a stop. The message center may display “4X4
SHIFT IN PROGRESS” during the system shift. The RTT location in the
message center will then display “4X4 AUTO” if 4A is selected or “4X4” if
4H is selected.
Shifting from 4A to 4H
Move the control from 4A to 4H at a stop or while driving at any speed.
The RTT location in the message center will display “4X4”.
Shifting to/from 4L
1. Bring the vehicle to a stop.
2. Place the gearshift in N (Neutral).
3. Move the control to the desired position.
The message center will display “4X4 SHIFT IN PROGRESS” during the
shift. The RTT location in the message center will then display the
system mode selected.
If any of the above shift conditions are not met, the shift will not occur
and the RTT location in the message center will display the appropriate
information.
Note:Some noise may be heard as the system shifts or engages.
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