service FORD EXPEDITION 1998 1.G User Guide

shudder while braking, felt mainly
in the steering wheel, the vehicle
most likely needs service.
The ABS operates by detecting the
onset of wheel lock up during
brake applications and
compensating for this tendency.
The front wheels are prevented
from locking even when the brakes
are firmly applied. The
accompanying illustration depicts
the advantage of an ABS equipped
vehicle (on bottom) to a non-ABS
equipped vehicle (on top) during
hard braking.
ABS warning lamp
The
ABSwarning lamp in the
instrument cluster illuminates for
about five seconds when starting
the vehicle. If an ABS fault is
detected, the light will remain on
and your vehicle should be
serviced as soon as possible.
Normal braking is still effective
unless the BRAKE warning lamp is
also illuminated.
Using ABS
²In an emergency or when
maximum efficiency from the
ABS is required, apply
continuous full force on the
brake. The ABS will be activated
immediately, thus allowing you
to retain full steering control of
your vehicle and, providing
!
BRAKE
Driving
99

steering assist will decrease to
improve steering feel. At lower
speeds, maneuverability will be
increased.
If the amount of effort required to
steer your vehicle changes at a
constant vehicle speed, have the
power steering system checked by
your dealer or a qualified service
technician.
AIR SUSPENSION SYSTEM
(IF EQUIPPED)
The air suspension system is
designed to improve ride, handling
and general vehicle performance
for static, on and off-road driving
conditions.
²The load leveling feature of the
air suspension automatically
keeps the vehicle at a constant
level if a load is added or
removed from the vehicle.
²The height adjustment feature
automatically controls the
vehicle height over a range of
approximately 5 cm (2 inches)
based on vehicle speed, ignition
position and selection of two or
four-wheel drive modes.
Driving
102

Trailer towing with your vehicle
may require the use of a trailer
tow option package.
Trailer towing puts additional loads
on your vehicle's engine,
transmission, axle, brakes, tires,
and suspension. For your safety
and to maximize vehicle
performance, be sure to use the
proper equipment while towing.
Follow these guidelines to ensure
safe towing procedure:
²Stay within your vehicle's load
limits. If exceeded, cargo should
be removed from the trailer
and/or the vehicle until all
weights are within specified
limits.
²Thoroughly prepare your vehicle
for towing. Refer toPreparing
to towin this chapter.
²Use extra caution when driving
while trailer towing. Refer to
Driving while you towin this
chapter.
²Service your vehicle more
frequently if you tow a trailer.
Refer to the severe duty
schedule in the ªService Guideº.
²Do not tow a trailer until your
vehicle has been driven at least
800 km (500 miles).
²Refer to the instructions
included with towing accessories
for the proper installation and
adjustment specifications.
Driving
118

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.
Driving
124

The high-current fuses are coded
as follows.
Fuse/Relay
LocationFuse Amp
RatingDescription
1 20A* Trailer Tow Running Lamp Relay,
Trailer Tow Backup Lamp Relay
2 10A* Air Bag Diagnostic Monitor
3 30A* All Unlock Relay, All Lock Relay,
Driver's Unlock Relay
4 15A* Air Suspension Service Switch
5 20A* Horn Relay
6 30A* Radio, Premium Sound Amplifier,
CD Changer, Rear Integrated
Control Panel, Sub-Woofer Power
(Fuse 3 & Fuse 5)
19 29
18 28EEC
POWER
RELAY
FUEL
PUMP
RELAY
FRONT
WASHER
PUMP HORN
RELAY 17 27
16 26
15 25
14 24
13
11 12
910
78
56
34
1223
22
21
20
W/S/W
RUN/
PARKW/S/W
HI/LO
Roadside emergencies
134

The primary battery fuses are
located in the engine compartment
near the battery.
Ford recommends that the
megafuses are serviced by a
qualified service technician.
Location Amperage Description
1 175 Power Network Box Megafuse
2 175 Alternator Megafuse
3 20 Alternator Field Minifuse
Engine mini fuse box
20A
1
2
3
Roadside emergencies
137

WRECKER TOWING
If you need to have your vehicle
towed, contact a professional
towing service or, if you are a
member, your roadside assistance
center.
On 4x2 vehicles, it is acceptable to
tow the vehicle with the front
wheels on the ground and the rear
wheels off the ground.
On 4x4 vehicles, it is
recommended that your vehicle be
towed with a wheel lift or flatbed
equipment.
Do not tow with slingbelt
equipment. Ford Motor Company
has not developed or approved a
slingbelt towing procedure.
Roadside emergencies
148

SERVICE RECOMMENDATIONS
To help you service your vehicle:
²We highlight do-it-yourself items
in the engine compartment for
easy location.
²We provide a ªService Guideº
which makes tracking routine
service easy.
If your vehicle requires
professional service, your
dealership can provide necessary
parts and service. Check your
ªWarranty Guideº to find out which
parts and services are covered.
Use only recommended fuels,
lubricants, fluids and service parts
conforming to specifications.
Motorcraft parts are designed and
built to provide the best
performance in your vehicle.
PRECAUTIONS WHEN
SERVICING YOUR VEHICLE
Be especially careful when
inspecting or servicing your
vehicle.
²Do not work on a hot engine.
²When the engine is running,
make sure that loose clothing,
jewelry or long hair does not get
caught up in moving parts.
²Do not work on a vehicle with
the engine running in an
enclosed space, unless you are
sure you have enough
ventilation.
Maintenance and care
150

²Oil levels above the MAX mark
may cause engine damage. Some
oil must be removed from the
engine by a service technician.
7. Put the indicator back in and
ensure it is fully seated.
Adding engine oil
1. Check the engine oil. For
instructions, refer toChecking the
engine oilin this chapter.
2. If the fluid level is not within
the normal range, add only
certified engine oil of the preferred
viscosity. Add engine oil through
the oil filler cap. Remove the filler
cap and use a funnel to pour oil in
the opening.
3. Recheck the oil level. Make sure
the oil level is not above the MAX
mark on the dipstick.
Engine oil recommendations
Look for this certification mark.
Ford oil specification is
WSS-M2C153-G.
Use SAE 5W-30 motor oil certified
for gasoline engines by the
American Petroleum Institute.
Maintenance and care
155

Do not use supplemental engine oil
additives, oil treatments or engine
treatments. They are unnecessary
and could, under certain
conditions, lead to engine damage
which is not covered by your
warranty.
Changing the engine oil and
filter
Change your engine oil and filter
according to the following mileage
and time requirements, whichever
occurs first:
²Normal Schedule ± 8,000 km
(5,000 miles) or six months.
²Severe Duty Schedule - 5,000
km (3,000 miles) or three
months. Severe duty operation
would include extensive idling,
trailer towing, driving in severe
dust and police, taxi or delivery
service.
Ford production and aftermarket
(Motorcraft) oil filters are designed
for added engine protection and
long life. If a replacement oil filter
is used that does not meet Ford
material and design specifications,
startup engine noises or knock
may be experienced.
It is recommended you use the
appropriate Motorcraft oil filter (or
another brand meeting Ford
specifications) for your engine
application.
Maintenance and care
156