2009 Mercury Mariner Owner's Manuals

•seat-mounted side airbags. Refer toSeat-mounted side airbag system
later in this chapter
•Safety Canopysystem. Refer toSafety Canopysystemlater in this
chapter.
•one or more impact and safing sensors.
•Safety belt pretensioners
•a readiness light and tone.
•diagnostic module.
•and the electrical wiring which connects the components.
•Front passenger sensing system. Refer toFront passenger sensing
systemlater in this chapter.
•“Passenger airbag off” or “pass airbag off” indicator lamp. Refer to
Front passenger sensing systemlater in this chapter.
The RCM (restraints control module) monitors its own internal circuits
and the supplemental airbag electrical system wiring (including the
impact sensors, the system wiring, the airbag system readiness light, the
airbag back up power and the airbag ignitors).
WARNING:Several air bag system components get hot after
inflation. Do not touch them after inflation.
WARNING:If the airbag has deployed,the airbag will not
function again and must be replaced immediately.If the
airbag is not replaced, the unrepaired area will increase the risk of
injury in a collision.
Front passenger sensing system
The front passenger sensing system is designed to meet the regulatory
requirements of Federal Motor Vehicle Safety Standard (FMVSS) 208
and is designed to disable (will not inflate) the front passenger’s frontal
airbag under certain conditions.
The front passenger sensing system works with sensors that are part of
the front passenger’s seat and safety belt. The sensors are designed to
detect the presence of a properly seated occupant and determine if the
front passenger’s frontal airbag should be enabled (may inflate) or
disabled (will not inflate).
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Seating and Safety Restraints
129

The front passenger sensing system will disable (will not inflate) the
front passenger’s frontal airbag if:
•the front passenger seat is unoccupied, or has small/medium objects in
the front seat,
•the system determines that an infant is present in a rear-facing infant
seat that is installed according to the manufacturer’s instructions,
•the system determines that a small child is present in a forward-facing
child restraint that is installed according to the manufacturer’s
instructions,
•the system determines that a small child is present in a booster seat,
•a front passenger takes his/her weight off of the seat for a period of
time,
The front passenger sensing system will turn off the passenger seat side
airbag if:
•the seat is empty and safety belt is unbuckled.
The front passenger sensing system
uses apassenger airbag offor
pass airbag offindicator which will
illuminate and stay lit to remind you
that the front passenger frontal airbag is off. The indicator lamp is
located in the center stack of the instrument panel just above the air
vents.
Note: The indicator lamp will illuminate for a short period of time when
the ignition is turned to the on position to confirm it is functional.
When the front passenger seat is not occupied (empty seat) or in the
event that the front passenger frontal airbag is enabled (may inflate), the
indicator lamp will be unlit.
The front passenger sensing system is designed to disable (will not
inflate) the front passenger’s frontal airbag when a rear facing infant
seat, a forward-facing child restraint, or a booster seat is detected.
•When the front passenger sensing system disables (will not inflate)
the front passenger frontal airbag, the indicator lamp will illuminate
and stay lit to remind you that the front passenger frontal airbag is
disabled.
•If the child restraint has been installed and the indicator lamp is not
lit, then turn the vehicle off, remove the child restraint from the
vehicle and reinstall the restraint following the child restraint
manufacturer’s instructions.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Seating and Safety Restraints
130

The front passenger sensing system is designed to enable (may inflate)
the front passenger’s frontal airbag anytime the system senses that a
person of adult size is sitting properly in the front passenger seat.
•When the front passenger sensing system enables the front passenger
frontal airbag (may inflate), the indicator will be unlit and stay unlit.
If a person of adult size is sitting in the front passenger’s seat, but the
passenger airbag offorpass airbag offindicator lamp is lit, it is
possible that the person isn’t sitting properly in the seat. If this happens:
•Turn the vehicle off and ask the person to place the seatback in the
full upright position.
•Have the person sit upright in the seat, centered on the seat cushion,
with the person’s legs comfortably extended.
•Restart the vehicle and have the person remain in this position for
about two minutes. This will allow the system to detect that person
and enable the passenger’s frontal airbag.
•If the indicator lamp remains lit even after this, the person should be
advised to ride in the rear seat.
OccupantPass Airbag Off
Indicator LampPassenger Airbag
Empty seat Unlit Disabled
Small child in child
safety seat or boosterLit Disabled
Small child with safety
belt buckled or
unbuckledLit Disabled
Adult Unlit Enabled
WARNING:Even with Advanced Restraints Systems, children
12 and under should be properly restrained in a rear seating
position.
After all occupants have adjusted their seats and put on safety belts, it’s
very important that they continue to sit properly. A properly seated
occupant sits upright, leaning against the seat back, and centered on the
seat cushion, with their feet comfortably extended on the floor. Sitting
improperly can increase the chance of injury in a crash event. For
example, if an occupant slouches, lies down, turns sideways, sits forward,
leans forward or sideways, or puts one or both feet up, the chance of
injury during a crash is greatly increased.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Seating and Safety Restraints
131

WARNING:Sitting improperly out of position or with the seat
back reclined too far can take off weight from the seat cushion
and affect the decision of the front passenger sensing system, resulting
in serious injury or death in a crash.
Always sit upright against your seatback, with your feet on the floor.
The front passenger sensing system may detect small or medium objects
placed on the seat cushion. For most objects that are in the front
passenger seat, the passenger airbag will be disabled. Even though the
passenger airbag is disabled, thepass airbag offlamp may or may not
be illuminated according to the table below.
ObjectsPass Airbag Off
Indicator LampPassenger Airbag
Small (i.e. three-ring
binder, small purse,
bottled water)Unlit Disabled
Medium (i.e. heavy
briefcase, fully packed
luggage)Lit Disabled
Empty seat, or small
to medium object with
safety belt buckledLit Disabled
If you think that the status of the passenger airbag off indicator lamp is
incorrect, check for the following:
•Objects lodged underneath the seat
•Objects between the seat cushion and the center console (if
equipped)
•Objects hanging off the seat back
•Objects stowed in the seatback map pocket (if equipped)
•Objects placed on the occupant’s lap
•Cargo interference with the seat
•Other passengers pushing or pulling on the seat
•Rear passenger feet and knees resting or pushing on the seat
The conditions listed above may cause the weight of a properly seated
occupant to be incorrectly interpreted by the front passenger sensing
system. The person in the front passenger seat may appear heavier or
lighter due to the conditions described in the list above.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Seating and Safety Restraints
132

WARNING:To reduce the risk of possible serious injury:
Do not stow objects in seat back map pocket (if equipped) or
hang objects off seat back if a child is in the front passenger seat.
Do not place objects underneath the front passenger seat or between
the seat and the center console (if equipped).
Check the “passenger airbag off” or “pass airbag off” indicator lamp for
proper airbag Status.
Failure to follow these instructions may interfere with the front
passenger seat sensing system.
In case there is a problem with the
front passenger sensing system, the
airbag readiness lamp in the
instrument cluster will stay lit.
If the airbag readiness lamp is lit, do the following:
The driver and/or adult passengers should check for any objects that
may be lodged underneath the front passenger seat or cargo interfering
with the seat.
If objects are lodged and/or cargo is interfering with the seat; please take
the following steps to remove the obstruction:
•Pull the vehicle over.
•Turn the vehicle off.
•Driver and/or adult passengers should check for any objects lodged
underneath the front passenger seat or cargo interfering with the seat.
•Remove the obstruction(s) (if found).
•Restart the vehicle.
•Wait at least 2 minutes and verify that the airbag readiness lamp is no
longer illuminated
•If the airbag readiness lamp remains illuminated, this may or may/not
be a problem due to the front passenger sensing system.
DO NOT attempt to repair or service the system; take your vehicle
immediately to an authorized dealer.
If it is necessary to modify an advanced front airbag system to
accommodate a person with disabilities, contact the Ford Customer
Relationship Center at the phone number shown in theCustomer
Assistancechapter of thisOwner’s Guide.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Seating and Safety Restraints
133

WARNING:Any alteration/modification to the front passenger
seat may affect the performance of the front passenger sensing
system.
Determining if the system is operational
The SRS uses a readiness light in the instrument cluster or a tone to
indicate the status of the system. Refer toAirbag readinesssection in
theInstrument Clusterchapter. Routine maintenance of the airbag is
not required.
A difficulty with the system is indicated by one or more of the following:
•The readiness light will either
flash or stay lit.
•The readiness light will not
illuminate immediately after
ignition is turned on.
•A series of five beeps will be heard. The tone pattern will repeat
periodically until the problem and/or light are repaired.
If any of these things happen, even intermittently, have the SRS serviced
at an authorized dealer immediately. Unless serviced, the system may not
function properly in the event of a collision.
Seat-mounted side airbag system
WARNING:Do not place objects or mount equipment on or
near the airbag cover on the side of the seatbacks of the front
seats or in front seat areas that may come into contact with a
deploying airbag. Failure to follow these instructions may increase the
risk of personal injury in the event of a collision.
WARNING:Do not use accessory seat covers. The use of
accessory seat covers may prevent the deployment of the side
airbags and increase the risk of injury in an accident.
WARNING:Do not lean your head on the door. The side airbag
could injure you as it deploys from the side of the seatback.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Seating and Safety Restraints
134

WARNING:Do not attempt to service, repair, or modify the
airbag SRS, its fuses or the seat cover on a seat containing an
airbag. See an authorized dealer.
WARNING:All occupants of the vehicle should always wear
their safety belts even when an airbag SRS is provided.
How does the side airbag system work?
The design and development of the
side airbag system included
recommended testing procedures
that were developed by a group of
automotive safety experts known as
the Side Airbag Technical Working
Group. These recommended testing
procedures help reduce the risk of
injuries related to the deployment of
side airbags.
The side airbag system consists of
the following:
•An inflatable nylon bag (airbag)
with a gas generator concealed
behind the outboard bolster of
the driver and front passenger
seatbacks.
•A special seat cover designed to allow airbag deployment.
•The same warning light, electronic control and diagnostic unit as used
for the front airbags.
•Two crash sensors located on the lower portion of the b-pillar (one on
each side of the vehicle).
Side airbags, in combination with safety belts, can help reduce the risk of
severe injuries in the event of a significant side impact collision.
The side airbags are fitted on the outboard side of the seatbacks of the
front seats. In certain lateral collisions, the airbag on the side affected by
the collision will be inflated. If the front passenger sensing system
detects an empty seat, the front passenger seat-mounted side airbag will
be deactivated. The airbag was designed to inflate between the door
panel and occupant to further enhance the protection provided
occupants in side impact collisions.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Seating and Safety Restraints
135

The airbag SRS is designed to activate when the vehicle sustains lateral
deceleration sufficient to cause the sensors to close an electrical circuit
that initiates airbag inflation.
The fact that the airbags 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. Side airbags are designed
to inflate in side-impact collisions, not roll-over, rear-impact, frontal or
near-frontal collisions, unless the collision causes sufficient lateral
deceleration.
WARNING:Several airbag system components get hot after
inflation. Do not touch them after inflation.
WARNING:If the side
airbag has deployed,the
airbag will not function again.
The side airbag system
(including the seat) must be
inspected and serviced by an
authorized dealer.If the airbag
is not replaced, the unrepaired
area will increase the risk of injury
in a collision.
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 theAirbag readiness
section in theInstrument Clusterchapter. Routine maintenance of the
side airbag is not required.
A difficulty with the system is indicated by one or more of the following:
•The readiness light (same light as for front airbag system) will either
flash or stay lit.
•The readiness light will not illuminate immediately after ignition is
turned on.
•A series of five beeps will be heard. The tone pattern will repeat
periodically until the problem and/or light are repaired.
If any of these things happen, even intermittently, have the SRS serviced
at your authorized dealer immediately. Unless serviced, the system may
not function properly in the event of a collision.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Seating and Safety Restraints
136