1999 FORD EXPEDITION tire size

The air suspension shut-off switch is
located behind an access panel
underneath the passenger side
instrument panel.
On vehicles equipped with
Air Suspension, turn OFF
the Air Suspension switch prior to
jacking, hoisting or towing your
vehicle.
Normal vehicle operation does not
require any action by the driver.
Check air suspension light
The warning and indicator light CK SUSP illuminates when the air
suspension switch is turned off or an air suspension system fault has
been detected.
If the light is displayed while driving and the air suspension system
switch is not turned off, safely pull off the road at your earliest
convenience. Turn the ignition switch from 4 (On) to 3 (Off) and 4 (On)
again. If the warning light reappears, turn the air suspension switch off
and have the vehicle serviced by a dealer or qualified service technician.
If the vehicle is loaded beyond the recommended maximum payload, the
CK SUSP light may illuminate. To correct this condition, remove or
redistribute the payload according to the recommended requirements
and follow the procedure outlined above.
TRACTION-LOK 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
Traction-Lok axle functions like a standard rear axle.
Extended use of other than the manufacturer's specified size tires on a
Traction-Lok 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.
AIR SUSPENSION
SWITCH
INTERRUPTEUR DE
LA SUSPENSION
PNEUMATIQUE
OFF
Driving
110

Trailer towing table (with heavy duty trailer tow option)
GCWR (Gross Combined Weight Rating)/trailer weights
EngineRear
axle
ratioTire size Maximum GCWRTrailer weight
range
(0 - maximum)
4x2
4.6L 3.3140.6 cm
(16 in)4 990 kg
(11 000 lbs.)0-2676 kg
(0-5 900 lbs.)
5.4L 3.3140.6 cm
(16 in)5 443 kg
(12 000 lbs.)0-3 078 kg
(0-6 800 lbs.)
5.4L 3.7340.6 cm
(16 in)6 123 kg
(13 500 lbs.)0-3 757 kg
(0-8 300 lbs.)
4x4
4.6L 3.5540.6 cm
(16 in)5 216 kg
(11 500 lbs.)0-2 716 kg
(0-6 000 lbs.)
4.6L 3.5543.2 cm
(17 in)4 990 kg
(11 000 lbs.)0-2 494 kg
(5 500 lbs.)
5.4L 3.3140.6 cm
(16 in)5 443 kg
(12 000 lbs.)0-2 902 kg
(0-6 400 lbs.)
5.4L 3.7340.6 cm
(16 in)6 123 kg
(13 500 lbs.)0-3 556 kg
(0-7 900 lbs.)
5.4L 3.7343.2 cm
(17 in)5 897 kg
(13 000 lbs.)0-3 395 kg
(0-7 500 lbs.)
Maximum frontal area of trailer is 5.6 square meters (60 square feet)
Do not exceed the maximum loads listed on the Safety Compliance
Certification label. For load specification terms found on the label, refer
toVehicle loadingin this chapter. Remember to figure in the tongue
load of your loaded trailer when figuring the total weight.
Towing trailers beyond the maximum recommended gross trailer
weight exceeds the limit of the vehicle and could result in
engine damage, transmission damage, structural damage, loss of control
and personal injury.
Driving
123

Replacing the tires
Replace the tires when the wear
band is visible through the tire
treads.
When replacing full size tires, never mix radial bias-belted, or
bias-type tires. Use only the tire sizes that are listed on the
Certification Label. Make sure that all tires are the same size, speed
rating, and load-carrying capacity. Use only the tire combinations
recommended on the label. If you do not follow these precautions,
your vehicle may not drive properly and safely.
Make sure that all replacement tires are of the same size, type,
load-carrying capacity and tread design (e.g., ªAll Terrainº, etc.),
as originally offered by Ford.
Do not replace your tires with ªhigh performanceº tires or larger
size tires.
Failure to follow these precautions may adversely affect the
handling of the vehicle and make it easier for the driver to lose
control and roll over.
Tires that are larger or smaller than your vehicle's original tires may also
affect the accuracy of your speedometer.
SNOW TIRES AND CHAINS
Snow tires must be the same size and grade as the tires you
currently have on your vehicle.
Maintenance and care
169

show how temperature impacts fuel economy. In general, lower
temperatures give lower fuel economy.
Driving style Ð good driving and fuel economy habits
Give consideration to the lists that follow and you may be able to change
a number of variables and improve your fuel economy.
Habits
²Smooth, moderate operation can yield up to 10% savings in fuel.
²Steady speeds without stopping will usually give the best fuel
economy.
²Idling for long periods of time (greater than one minute) may waste
fuel.
²Anticipate stopping; slowing down may eliminate the need to stop.
²Sudden or hard accelerations may reduce fuel economy.
²Slow down gradually.
²Drive at reasonable speeds (traveling at 105 km /h [65 mph] uses 15%
more fuel than traveling at 88 km/h [55 mph]).
²Revving the engine before turning it off may reduce fuel economy.
²Use of the air conditioner or defroster may reduce fuel economy.
²Use of speed control (if equipped) may improve fuel economy. Speed
control can help maintain a constant speed and reduce speed changes.
You may want to turn off the speed control in hilly terrain as
unnecessary shifting between third and fourth gears may occur and
could result in reduced fuel economy.
²Warming up a vehicle on cold mornings is not required and may
reduce fuel economy.
²Resting your foot on the brake pedal while driving may reduce fuel
economy.
²Combine errands and minimize stop-and-go driving.
Maintenance
²Keep tires properly inflated and use only recommended size.
²Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
²Use recommended engine oil. Refer toLubricant Specifications.
Maintenance and care
176

Item Information
Recommended fuel Unleaded fuel only - 87 octane
Fuel tank capacity-4x2 without air
suspension98.6L (26.0 gallons)
Fuel tank capacity-4x4 vehicles
and 4x2 vehicles with rear load
level suspension113.6L (30.0 gallons)
Engine oil (includes filter change) 5.7L (6.0 quarts). Use Motorcraft
5W30 Super Premium Motor Oil,
Ford specification WSS-M2C153-G.
Tire size and pressure Refer to the Certification Label
inside of driver's door.
Hood release Pull handle under the left side of
the instrument panel.
Coolant capacity
1Refer toRefill capacitiesin the
Capacities and specifications
chapter.
Power steering fluid capacity Fill to line on reservoir. Use
Premium Power Steering Fluid.
Automatic transmission fluid
capacity-4R70W
213.1L (13.9 quarts). Use
Motorcraft MERCONtV ATF.
Automatic transmission fluid
capacity-4R100 (4x2)
215.0L (15.9 quarts). Use
Motorcraft MERCONtAT F.
Automatic transmission fluid
capacity-4R100 (4x4)
215.5L (16.4 quarts). Use
Motorcraft MERCONtAT F.
1Use Ford Premium Engine Coolant (green in color). DO NOT USE Ford
Extended Life Engine Coolant (orange in color). Refer toAdding engine
coolant, in the Maintenance and Care chapter.
2Ensure correct automatic transmission fluid is used for a specific
application. Check the container to verify the fluid is MERCONtand/or
MERCONtV approved. Some fluids have been approved as meeting both
MERCONtand MERCONtV requirements and will be labeled as such.
Fluids labeled as meeting only MERCONtor only MERCONtV
requirements must not be used interchangeably. DO NOT mix MERCONt
and MERCONtV. Transmission fluid requirements are indicated on the
dipstick or on the dipstick handle. Refer to your Scheduled Maintenance
Guide to determine the correct service interval.
Filling station information
216