1998 FORD F150 spare tire

Fuse/Relay Location Fuse Amp Rating Description
20 50A** Ignition Switch
21 50A** Ignition Switch
22 50A** Junction Box
Fuse/Relay Panel
Battery Feed
23 40A** Blower Relay
24 30A** PCM Power Relay,
Engine Fuse Module
(Fuse 1)
25 30A** Junction Box
Fuse/Relay Panel, ACC
Delay Relay
26 Ð Not Used
27 Ð Not Used
28 30A** Trailer Electronic
Brake Controller
29 Ð Not Used
*Mini fuses **Maxi
fuses
CHANGING THE TIRES
If you get a flat tire while driving,
do not apply the brake heavily.
Instead, gradually decrease your
speed. Hold the steering wheel
firmly and slowly move to a safe
place on the side of the road.
Spare tire information
Your vehicle is equipped with a
spare tire that may be used as a
spare or a regular tire. The spare
tire is not equipped with wheel
trim. The wheel trim from the
original wheel/tire may be used on
the spare.
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141

If your vehicle is equipped with
4WD or AWD, a spare tire of a
different size than the road
tires should not be used. Such
a tire could result in damage to
driveline components and make
the vehicle difficult to control.
Location of the spare tire and
tools
The spare tire and tools for your
vehicle are stowed in the following
locations:
Tool Location
Spare tire Under the vehicle, just forward of the
rear bumper
Jack, lug nut wrench Under the seat
Jack handle On top of the radiator support at the
front of the engine compartment
Removing the spare tire
1. Insert the jack handle into the
rear bumper opening.
The handle will stop moving and
forward resistance to turning will
be felt when properly engaged.
2. Turn the handle
counterclockwise until tire is
lowered to the ground, the tire can
be slid rearward and the cable is
slightly slack.
3. Remove the retainer from the
spare tire.
Stowing the spare
1. Lay the tire on the ground with
the valve stem facing up.
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3. Block the diagonally opposite
wheel.
4. Obtain the spare tire and jack
from their storage locations.
5. Use the tip of the lug wrench to
remove any wheel trim.
6. Loosen each wheel lug nuts
one-half turn counterclockwise but
do not remove them until the
wheel is raised off the ground.
7. Turn OFF the air suspension
switch (if equipped).
8. Position the jack according to
the following guides and turn the
jack handle clockwise until the
wheel is completely off the ground.
When one of the rear wheels is off
the ground, the transmission alone
will not prevent the vehicle from
moving or slipping off the jack,
even if the transmission is in P
(Park). To prevent the vehicle
from moving when you change the
tire, be sure that the parking brake
is set and the diagonally opposite
wheel is blocked. If the vehicle
slips off the jack, someone could
be seriously injured.
AIR SUSPENSION
SWITCH
INTERRUPTEUR DE
LA SUSPENSION
PNEUMATIQUE
OFF
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144

²Never use the front or rear
differential as a jacking
point.
9. Remove the lug nuts with the
lug wrench.
10. Replace the flat tire with the
spare tire, making sure the valve
stem is facing outward. Reinstall
the lug nuts until the wheel is snug
against the hub. Do not fully
tighten the lug nuts until the
wheel has been lowered.
11. Lower the wheel by turning the
jack handle counterclockwise.
12. Remove the jack and fully
tighten the lug nuts in the order
shown.
13. Put flat tire, jack and lug
wrench away. Make sure the jack is
fastened so it does not rattle when
you drive.
14. Unblock the wheels.
15. Turn on the air suspension
switch (if equipped).
1
4 3
52
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146

INFORMATION ABOUT TIRE
QUALITY GRADES
New vehicles are fitted with tires
that have their Tire Quality Grade
(described below) molded into the
tire's sidewall. These Tire Quality
Grades are determined by
standards that the United States
Department of Transportation has
set.
Tire Quality Grades apply to new
pneumatic tires for use on
passenger cars. They do not apply
to deep tread, winter-type snow
tires, space-saver or temporary use
spare tires, tires with nominal rim
diameters of 10 to 12 inches or
limited production tires as defined
in Title 49 Code of Federal
Regulations Part 575.104(c)(2).
U.S. Department of
Transportation-Tire quality
grades:The U.S. Department of
Transportation requires Ford to
give you the following information
about tire grades exactly as the
government has written it.
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test course.
For example, a tire grade 150
would wear one and one-half
(1 1/2) times as well on the
government course as a tire grade
100. The relative performance of
Maintenance and care
179