maintenance Mercury Mystique 1998 s Owner's Guide

Maintenance and care
146Relearning the idle function
Because your vehicle’s engine is
electronically controlled, some
control conditions are maintained
by power from the battery. When
the battery is disconnected or a
new battery is installed, the
computer must “relearn” its idle
conditions before your vehicle can
drive properly. To begin this
process:
1. Put the automatic transaxle
gearshift in P (Park). Put the
manual transaxle gearshift in
neutral.
2. Turn off all accessories and start
the vehicle.
3. Let the engine idle for at least
one minute.
4. The “relearning” process will
automatically complete as you
drive the vehicle.
•If you do not allow the engine to
“relearn” its idle, the idle quality
of your vehicle may be adversely
affected until the idle is
eventually “relearned”.
•If the battery has been
disconnected or if a new battery
has been installed, the clock and
preset radio stations must be
reset once the battery is
reconnected.
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Maintenance and care
147 Checking wiper blades
Check the wiper blades on your
vehicle for roughness by running
the tips of your fingers over the
edge of the blade.
Traces of grease, silicone and fuel
prevent wiper blades from
functioning properly. We
recommend Ford cleaning
solutions or equivalent to clean
wiper blades.
Change the wiper blades on your
vehicle at least once a year.
Cabin air filter replacement
In your climate control system, you
have a filter that cleans the air
before it enters the interior of the
vehicle. This filter should be
replaced at the intervals in the
”Maintenance Schedule” booklet.
To replace the cabin air filter:
1. Remove both windshield wiper
arms. With the wiper arm in the
horizontal position, lift the arm
away from the windshield while
pulling the retaining clip at the
base toward the windshield.
Release the wiper arm, then lift it
off the base.
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Maintenance and care
1482. Remove the plastic caps from
the screws on the grille. Remove
the screws.
3. Open the hood. Pull off the
rubber weatherstrip at the back of
the engine compartment. Remove
the screws that hold the grille,
separate the two halves and
remove the grille.
4. The filter is in a housing at the
back of the engine compartment,
on the left side. Pull off the two
clips on the sides of the housing.
Slide out the housing and filter.
5. Slide the filter out of the
housing, replace with the new filter
and slide the housing and cabin air
filter back into place. Reinstall the
clips on the housing.
6. Replace the grille and wiper
arms.
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Maintenance and care
149 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 25 to 30 cm (10 to 12
inches) or limited production tires
as defined in Title 49 Code of
Federal Regulation 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. IMPORTANT TIRE
MAINTENANCE INFORMATION
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Maintenance and care
150Treadwear
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 of 150
would wear one and one-half
(11/2) times as well on the
government course as a tire grade
100. The relative performance of
tires depends upon the actual
conditions of their use, however,
and may depart significantly from
the norm due to variations in
driving habits, service practices,
and differences in road
characteristics and climate.
Traction ABC
The traction grades, from highest
to lowest are A, B, and C, and they
represent the tire’s ability to stop
on wet pavement as measured
under test surfaces of asphalt and
concrete. A tire marked C may
have poor traction performance.
Warning: The traction grade
assigned to this tire is based on
braking (straightahead) traction
tests and does not include
cornering (turning) traction.
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Maintenance and care
151 Temperature ABC
The temperature grades are A (the
highest), B, and C, representing
the tire’s resistance to the
generation of heat when tested
under controlled conditions on a
specified indoor laboratory test
wheel. Sustained high temperature
can cause the material of the tire to
degenerate and reduce tire life, and
excess temperature can lead to
sudden tire failure. The grade C
corresponds to a level of
performance which all passenger
cars tires must meet under the
Federal Motor Vehicle Safety
Standard No. 109. Grades B and A
represent higher levels of
performance on the laboratory test
wheel than the minimum required
by law.
The temperature grade for
this tire is established for a
tire that is properly inflated and
not overloaded.
Excessive speed,
underinflation, or excessive
loading can cause heat buildup
and possible tire failure.
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Maintenance and care
152Checking tire pressure
Check the tire pressure
periodically and inflate the tires as
necessary. To check the tire
pressure, insert the tire pressure
gauge into the valve.
The cold pressure amount is listed
on the Safety Compliance
Certification label.
Improperly inflated tires can
affect vehicle handling and
can fail suddenly, possibly
resulting in loss of vehicle control.
Rotating tires
Rotate your tires at regular
intervals for even wear. Rotation
intervals are listed in the “Service
Guide”.
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Maintenance and care
153
Failure to follow these
precautions may adversely
affect the handling of the vehicle
and make it easier to lose control
and roll over.
Replacing tires
Replace 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
tire pressure decal. Make sure that
all tires are the same size, speed
rating, and load-carrying capacity.
Use only the tire combinations
recommended on the decal. If you
do not follow these precautions,
your vehicle may not drive
properly and safely.
Do not replace your tires
with “high performance”
tires or larger size tires.
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Maintenance and care
154
Dispose of worn tires in
accordance with local
environmental regulations.
Refer to the Safety Compliance
Certification label to determine the
specific size tire and wheel Ford
Motor Company recommends for
use on this vehicle.
When purchasing replacement tires
for your vehicle, consult your
dealer or a qualified service
technician to ensure that the
correct tire type is used.
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Maintenance and care
155 The tires on your vehicle have all-
weather treads to provide traction
in rain and snow. However, in some
climates, using snow tires and
chains may be necessary. Ford
offers snow chains as a Ford
approved accessory and
recommends use of these or their
equivalents on approved tires. See
your dealer or a qualified service
technician for more information on
tire chains for your vehicle. Follow
these guidelines when using snow
tires and chains:
•Install chains securely, verifying
that the chains do not touch any
wiring, brake lines or fuel lines.
•Install the chains on the front
tires only.
•Do not use tire chains 205/60
tires and 205/55R16 Z rated tires.
Steering, suspension and body
components may be damaged by
use of chains.
Snow tires must be the same
size and grade as the tires
you currently have on your
vehicle.
Using snow tires and chains
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