1999 Mercury Grand Marquis Owner's Manuals

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 and
indicator chime 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 (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.
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 the
Maintenance and caresection.
Seating and safety restraints
89

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.
All occupants of the vehicle including the driver should always
properly wear their safety belts even when air bag SRS is
provided.
Always transport children 12 years old and under in the back
seat and always use appropriate child restraints.
NHTSA recommends a minimum distance of at least 25 cm (ten
[10] inches) between an occupant's chest and the air bag
module.
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Seating and safety restraints
90

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.
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.
Seating and safety restraints
91

How does the air bag supplemental restraint system work?
The air bag SRS is designed to
activate when the vehicle sustains
sufficient 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.
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, it may also
cause minor burns, abrasions, swelling or temporary hearing loss.
Because air bags must inflate rapidly and with 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.
Seating and safety restraints
92

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 readiness
section in theInstrumentationchapter. Routine maintenance of the air
bag is not required.
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.
AIR
BAG
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93

Disposal of air bags and air bag equipped vehicles
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 seeAir 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.
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.
Seating and safety restraints
94

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 seats raise the child and
provide a shorter, firmer seating cushion that encourages safer seating
posture and better fit of lap and shoulder belts on the child.
A belt-positioning booster should be used if the shoulder belt rests in
front of the child's face or neck, or if the lap belt does not fit snugly on
both thighs, or if the thighs are too short to let the child sit all the way
back on the seat cushion when the lower legs hang over the edge of the
seat cushion. You may wish to discuss the special needs of your child
with your pediatrician.
SAFETY SEATS FOR CHILDREN
Child and infant or child safety seats
Use a safety seat that is recommended for the size and weight of the
child. Carefully follow all of the manufacturer's instructions with the
safety seat you put in your vehicle. If you do not install and use the
safety seat properly, the child may be injured in a sudden stop or
collision.
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95

When installing a child safety seat:
²Review and follow the information
presented in theAir Bag
Supplemental Restraint System
section in this chapter.
²Use the correct safety belt buckle
for that seating position.
²Insert the belt tongue into the
proper buckle until you hear a
snap and feel it latch. Make sure
the tongue is securely fastened in
the buckle.
²Keep the buckle release button pointing up and away from the safety
seat, with the tongue between the child seat and the release button,
to prevent accidental unbuckling.
²Place seat back in upright position.
²Put the safety belt in the automatic locking mode. Refer toAutomatic
locking mode(passenger side front and outboard rear seating
positions)(if equipped).
Ford recommends the use of a child safety seat having a top tether
strap. Install the child safety seat in a seating position which is capable
of providing a tether anchorage. For more information on top tether
straps, refer toAttaching safety seats with tether straps.
Carefully follow all of the manufacturer's instructions included
with the safety seat you put in your vehicle. If you do not install
and use the safety seat properly, the child may be injured in a sudden
stop or collision.
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96