1999 FORD MUSTANG Owners Manual

Conditions of operation
If... Then...
The driver's safety
belt is not buckled
before the ignition
switch is turned to
the ON position...The safety belt warning
light illuminates for one to
two minutes and the
warning chime sounds for
four to eight seconds.
The driver's safety
belt is buckled while
the indicator light is
illuminated and the
warning chime is
sounding...The safety belt warning
light and warning chime
turn off.
The driver's safety
belt is buckled before
the ignition switch is
turned to the ON
position...The safety belt warning
light will turn on for three
seconds and then turn off.
The indicator chime will
remain off.
Safety belt maintenance
Inspect the safety belt systems periodically to make
sure they work properly and are not damaged.
Inspect the safety belts to make sure there are no
nicks, wears or cuts, replacing if necessary. All
safety belt assemblies, including retractors, buckles,
front seat belt buckle assemblies, buckle support
assemblies (slide bar-if equipped), shoulder belt
height adjusters (if equipped), child safety seat
tether bracket assemblies (if equipped), and
attaching hardware, should be inspected after a
collision. Ford recommends that all safety belt
assemblies used in vehicles involved in a collision be
replaced. However, if the collision was minor and a
qualified technician finds that the belts do not show
damage and continue to operate properly, they do
not need to be replaced. Safety belt assemblies not
in use during a collision should also be inspected
and replaced if either damage or improper operation
is noted.
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Failure to inspect and if necessary replace
the safety belt assembly under the above
conditions could result in severe personal injuries
in the event of a collision.
Refer toCleaning and maintaining the safety
beltsin theMaintenance and caresection.
AIR BAG SUPPLEMENTAL RESTRAINT SYSTEM
(SRS)
Important supplemental restraint system (SRS)
precautions
The supplemental
restraint system is
designed to work with
the safety belt to help
protect the driver and
right front passenger
from certain upper
body injuries.
Air bags DO NOT
inflate slowly or gently
and the risk of injury
from a deploying air bag is greatest close to the trim
covering the air bag module.
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74

All occupants of the vehicle, including the
driver, should always properly wear their
safety belts, even when an air bag SRS is provided.
Always transport children 12 years old and
under in the back seat and always properly
use appropriate child restraints.
National Highway Traffic Safety
Administration (NHTSA) recommends a
minimum distance of at least 25 cm (ten [10]
inches) between an occupant's chest and the
driver air bag module.
Never place your arm over the air bag
module as a deploying air bag can result in
serious arm fractures or other injuries.
Steps you can take to properly position yourself
away from the airbag:
²Move your seat to the rear as far as you can while
still reaching the pedals comfortably.
²Recline the seat slightly (one or two degrees)
from the upright position.
Do not put anything on or over the air bag
module. Placing objects on or over the air
bag inflation area may cause those objects to be
propelled by the air bag into your face and torso
causing serious injury.
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75

Do not attempt to service, repair, or modify
the Air Bag Supplemental Restraint System
or its fuses. See your Ford or Lincoln-Mercury
dealer.
Children and air bags
For additional
important safety
information, read all
information on safety
restraints in this guide.
Children must always
be properly restrained.
Accident statistics
suggest that children
are safer when
properly restrained in
the rear seating
positions than in the front seating position. Failure
to follow these instructions may increase the risk of
injury in a collision.
Air bags can kill or injure a child in a child
seat.NEVERplace a rear-facing child seat
in front of an active air bag. If you must use a
forward-facing child seat in the front seat, move
the seat all the way back.
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76

How does the air bag supplemental restraint
system work?
The air bag SRS is
designed to activate
when the vehicle
sustains longitudinal
deceleration sufficient
to cause the sensors to
close an electrical
circuit that initiates air
bag inflation.
The fact that the air bags did not inflate in a
collision does not mean that something is wrong
with the system. Rather, it means the forces were
not of the type sufficient to cause activation. Air
bags are designed to inflate in frontal and
near-frontal collisions, not rollover, side-impact, or
rear-impacts unless the collision causes sufficient
longitudinal deceleration.
The air bags inflate and
deflate rapidly upon
activation. After air bag
deployment, it is
normal to notice a
smoke-like, powdery
residue or smell the
burnt propellant. This
may consist of
cornstarch, talcum
powder (to lubricate
the bag) or sodium
compounds (e.g., baking soda) that result from the
combustion process that inflates the air bag. Small
amounts of sodium hydroxide may be present which
may irritate the skin and eyes, but none of the
residue is toxic.
While the system is designed to help reduce serious
injuries, contact with a deploying air bag may also
cause abrasions, swelling or temporary hearing loss.
Because air bags must inflate rapidly and with
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77

considerable force, there is the risk of death or
serious injuries such as fractures, facial and eye
injuries or internal injuries, particularly to occupants
who are not properly restrained or are otherwise out
of position at the time of air bag deployment. Thus,
it is extremely important that occupants be properly
restrained as far away from the air bag module as
possible while maintaining vehicle control.
Several air bag system components get hot
after inflation. Do not touch them after
inflation.
If the air bag is deployed,the air bag will
not function again and must be replaced
immediately.If the air bag is not replaced, the
unrepaired area will increase the risk of injury in a
collision.
The SRS consists of:
²driver and passenger air bag modules (which
include the inflators and air bags),
²one or more impact and safing sensors,
²a readiness light and tone
²and the electrical wiring which connects the
components.
The diagnostic module monitors its own internal
circuits and the supplemental air bag electrical
system warning (including the impact sensors), the
system wiring, the air bag system readiness light, the
air bag back up power and the air bag ignitors.
Determining if the system is operational
The SRS uses a readiness light in the instrument
cluster or a tone to indicate the condition of the
system. Refer to theAir bag readinesssection in
theInstrumentationchapter. Routine maintenance
of the air bag is not required.
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A difficulty with the system is indicated by one or
more of the following:
²The readiness light
will either flash or
stay lit.
²The readiness light
will not illuminate immediately after ignition is
turned on.
²A series of five beeps will be heard. The tone
pattern will repeat periodically until the problem
and light are repaired.
If any of these things happen, even intermittently,
have the SRS serviced at your dealership or by a
qualified technician immediately. Unless serviced,
the system may not function properly in the event of
a collision.
Disposal of air bags and air bag equipped
vehicles (including pretensioners)
For disposal of air bags or air bag equipped vehicles,
see your local dealership or qualified technician. Air
bags MUST BE disposed of by qualified personnel.
SAFETY RESTRAINTS FOR CHILDREN
See the following sections for directions on how to
properly use safety restraints for children. Also see
Air Bag Supplemental Restraint System (SRS)in
this chapter for special instructions about using air
bags.
Important child restraint precautions
You are required by law to use safety restraints for
children in the U.S. and Canada. If small children
ride in your vehicle (generally children who are four
years old or younger and who weigh 18 kg [40 lbs]
or less), you must put them in safety seats made
especially for children. Check your local and state or
provincial laws for specific requirements regarding
the safety of children in your vehicle.
AIR
BAG
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79

Never let a passenger hold a child on his or
her lap while the vehicle is moving. The
passenger cannot protect the child from injury in a
collision.
Always follow the instructions and warnings that
come with any infant or child restraint you might
use.
When possible, always place children under age 12
in the rear seat of your vehicle. Accident statistics
suggest that children are safer when properly
restrained in the rear seating positions than in the
front seating position.
Children and safety belts
If the child is the proper size, restrain the child in a
safety seat.
Children who are too large for child safety seats (as
specified by your child safety seat manufacturer)
should always wear safety belts.
Follow all the important safety restraint and air bag
precautions that apply to adult passengers in your
vehicle.
If the shoulder belt portion of a combination lap and
shoulder belt can be positioned so it does not cross
or rest in front of the child's face or neck, the child
should wear the lap and shoulder belt. Moving the
child closer to the center of the vehicle may help
provide a good shoulder belt fit.
Do not leave children, unreliable adults, or
pets unattended in your vehicle.
To improve the fit of lap and shoulder belts on
children who have outgrown child safety seats, Ford
recommends use of a belt-positioning booster seat
that is labelled as conforming to all Federal motor
vehicle safety standards. Belt-positioning booster
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