wheel FORD EXPEDITION 1998 1.G User Guide

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:
²2Hposition delivers power only
to the rear axle.
²A4WDposition 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.
²4Hposition provides
mechanically locked four-wheel
drive power delivery to front
and rear axles.
²4Lposition provides
mechanically locked four-wheel
4H
2HA4WD4L
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drive when above average power
at reduced speeds is required.
Utility and four-wheel
drive vehicles arenot
designed 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.
Using the Control-Trac system
Shifting to A4WD
Move the 4WD control to A4WD at
a stop or at speeds up to 88 km/h
(55 mph).
²At temperatures below 0ÉC
(32ÉF), shifts from 2H to A4WD
or 4H should not be performed
above 72 km/h (45 mph).
²Do not shift into A4WD when
only the rear wheels are
spinning.
Shifting to 2H
Move the 4WD control to 2H at
any forward speed.
4H
2HA4WD4L
4H
2HA4WD4L
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Shifting from 4H to 4L (and 4L
to 4H)
1. Bring the vehicle to a stop.
2. Depress the brake.
3. Place the gearshift in N
(Neutral).
4. Move the 4WD control to the 4H
(or 4L) position.
Shifting from A4WD to 4H
Move the 4WD control from A4WD
to 4H at any forward speed.
Shifting from 2H to 4H can be
done at speeds up to 88 km
(55 mph).
Driving off-road with 4WD
Your vehicle is specially equipped
for driving on sand, snow, mud and
rough terrain and has operating
characteristics that are somewhat
different from conventional
vehicles, both on and off the road.
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
4H
2HA4WD4L
4H
2HA4WD4L
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the outside. Do not grip the
spokes.
Drive cautiously to avoid vehicle
damage from concealed objects
such as rocks and stumps.
You should either know the terrain
or examine maps of the area
before driving. Map out your route
before driving in the area. For
more information on driving
off-road, read the ªFour Wheelingº
supplement in your owner's
portfolio.
If your vehicle gets stuck
If the vehicle is stuck, shift the
transmission in a steady motion
between forward and reverse
gears. Allow the transmission to
engage, then press lightly on the
accelerator.
Do not rock the vehicle for
more than a few minutes. The
transmission and tires may be
damaged or the engine can
overheat.
Do not spin the wheels at
over 56 km/h (35 mph).
The tires may fail and injure a
passenger or bystander.
Sand
When driving over sand, try to
keep all four wheels on the most
solid area of the trail. Do not
reduce the tire pressures but shift
to a lower gear and drive steadily
through the terrain. Apply the
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accelerator slowly and avoid
spinning the wheels.
Mud and water
If you must drive through high
water, drive slowly. Traction or
brake capability may be limited.
When driving through water,
determine the depth; avoid water
higher than the bottom of the hubs
(if possible) and proceed slowly. If
the ignition system gets wet, the
vehicle may stall.
Once through water, always try the
brakes. Wet brakes do not stop the
vehicle as effectively as dry brakes.
Drying can be improved by moving
your vehicle slowly while applying
light pressure on the brake pedal.
After driving through mud, clean
off residue stuck to rotating
driveshafts and tires. Excess mud
stuck on tires and rotating
driveshafts causes an imbalance
that could damage drive
components.
If the transmission and transfer
case are submerged in water, their
fluids should be checked and
changed, if necessary.
Water intrusion into the
transmission may damage the
transmission.
If the rear axle is submerged in
water, the rear axle lubricant
should be checked and changed, if
necessary. The rear axle is filled
with a synthetic lubricant and does
not normally require a lubricant
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the hubs (truck)/wheel rims (car).
Once through the water, always try
the brakes. Wet brakes do not stop
the vehicle as effectively as dry
brakes. Drying can be improved by
moving your vehicle slowly while
applying light pressure on the
brake pedal.
VEHICLE LOADING
Before loading a vehicle, familiarize
yourself with the following terms:
²Base Curb Weight: Weight of
the vehicle including any
standard equipment, fluids,
lubricants, etc. It does not
include passengers or
aftermarket equipment.
²Payload: Combined maximum
allowable weight of cargo,
passengers and optional
equipment. The payload equals
the gross vehicle weight rating
minus base curb weight.
²GVW (Gross Vehicle Weight):
Base curb weight plus payload
weight. The GVW is not a limit
or a specification.
²GVWR (Gross Vehicle Weight
Rating): Maximum total weight
of the base vehicle, passengers,
optional equipment and cargo.
The GVWR is specific to each
vehicle and is listed on the
Safety Compliance Label on the
driver's door pillar.
²GAWR (Gross Axle Weight
Rating): Carrying capacity for
each axle system. The GAWR is
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upshifting for optimum fuel
economy and transmission
cooling.
²Anticipate stops and brake
gradually.
Servicing after towing
If you tow a trailer for long
distances, your vehicle will require
more frequent service intervals.
Refer to the Severe Duty Schedule
in your ªService Guideº for more
information.
Towing behind another vehicle
Do not tow your vehicle behind
another vehicle, such as an RV.
Your vehicle cannot be flat towed
with all wheels on the ground.
Trailer towing tips
²Practice turning, stopping and
backing up in an area before
starting on a trip to get the feel
of the vehicle trailer
combination. When turning,
make wider turns so the trailer
wheels will clear curbs and
other obstacles.
²Allow more distance for
stopping with a trailer attached.
²The trailer tongue weight should
be 10±15% of the loaded trailer
weight.
²After you have traveled 80 km
(50 miles), thoroughly check
your hitch, electrical
connections and trailer wheel
lug nuts.
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²When stopped in traffic for long
periods of time in hot weather,
place the gearshift in P (Park)
and increase idle speed. This
aids engine cooling and air
conditioner efficiency.
²Vehicles with trailers should not
be parked on a grade. If you
must park on a grade, place
wheel chocks under the trailer's
wheels.
Launching or retrieving a boat
When backing down a ramp during
boat launching or retrieval,
²Do not allow the static water
level to rise above the bottom
edge of the rear bumper and
²Do not allow waves to break
higher than 15 cm (six inches)
above the bottom edge of the
rear bumper.
Exceeding these limits may allow
water to enter critical vehicle
components, adversely affecting
driveability, emissions and
reliability.
If the rear axle is submerged in
water, the rear axle lubricant
should be checked and changed, if
necessary. The rear axle is filled
with a synthetic lubricant and does
not normally require a lubricant
change for the life of the vehicle.
Rear axle lubricant quantities
should not need to be checked
unless a leak is suspected.
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Always replace a fuse with
one that has the specified
amperage rating. Using a fuse
with a higher amperage rating
can cause severe wire damage
and could start a fire.
Standard fuse amperage rating
and color
Fuse rating Color
5 amp Tan
7.5 amp Brown
10 amp Red
15 amp Light blue
20 amp Yellow
20 amp fuse link Light blue
25 amp Natural
30 amp Light green
30 amp fuse link Pink
40 amp fuse link Green
50 amp fuse link Red
60 amp fuse link Yellow
80 amp fuse link Black
100 amp fuse link Dark blue
Passenger compartment fuse
panel
The fuse panel is located below
and to the left of the steering
wheel by the brake pedal. Pull the
panel cover outward to access the
fuses.
To remove a fuse use the fuse
puller tool provided on the fuse
panel cover.
Roadside emergencies
129

Fuse/Relay
LocationFuse Amp
RatingDescription
5 15A Digital Transmission Range (DTR)
Sensor, Daytime Running Lamps
(DRL) Module, Speed Control
Servo/Amplifier Assembly,
Heater-A/C Control Assembly,
Blend Door Actuator, Electronic
Variable Orifice (EVO) Module
6 5A Shift Lock Actuator, Generic
Electronic Module (GEM), 4
Wheel Air Suspension (4WAS)
Module, Compass Sensor, Steering
Wheel Rotation Sensor, Heated
Grid Relay, Overhead Trip
Computer (OTC) Module
7 5A Auxiliary A/C Relay, Console
Blower Motor
8 5A Radio, Main Light Switch, Remote
Anti-Theft Personality (RAP)
Module
9 Ð Not Used
10 Ð Not Used
11 30A Washer Pump Relay, Wiper
Run/Park Relay, Wiper Hi/Lo
Relay, Windshield Wiper Motor,
Rear Wiper Pump Relay
12 5A Data Link Connector (DLC)
13 15A Brake On/Off (BOO) Switch,
Brake Pressure Switch
14 15A Battery Saver Relay, Interior
Lamp Relay
15 5A Generic Electronic Module
(GEM), Passive Anti-Theft System
(PATS) Module
Roadside emergencies
131