sensor Hyundai Sonata 2012 Owner's Manual

Safety features of your vehicle24
3
✽
✽
NOTICE• Both the driver's and front passen-
ger's pre-tensioner seat belts may be
activated in certain frontal collisions
(or side collisions).
The pre-tensioners will not be activat-
ed if the seat belts are not being worn
at the time of the collision.
• When the pre-tensioner seat belts are activated, a loud noise may be heard
and fine dust, which may appear to be
smoke, may be visible in the passenger
compartment. These are normal oper-
ating conditions and are not haz-
ardous.
• Although it is harmless, the fine dust may cause skin irritation and should
not be breathed for prolonged peri-
ods. Wash all exposed skin areas thor-
oughly after an accident in which the
pre-tensioner seat belts were activat-
ed.
• Because the sensor that activates the SRS air bag is connected with the pre-
tensioner seat belt, the SRS air bag
warning light on the instrument
panel will illuminate for approximate-
ly 6 seconds after the ignition switch
has been turned to the ON position,
and then it should turn off.
CAUTION
If the pre-tensioner seat belt is not
working properly, this warning light will illuminate even if there is nomalfunction of the SRS air bag. Ifthe SRS air bag warning light does not illuminate when the ignitionswitch is turned ON, or if it remains illuminated after illuminating forapproximately 6 seconds, or if it illuminates while the vehicle isbeing driven, have an authorized HYUNDAI dealer inspect the pre-tensioner seat belt and SRS air bagsystem as soon as possible.
WARNING
To obtain maximum benefit from a
pre-tensioner seat belt:
1. The seat belt must be worn cor- rectly and adjusted to the proper
position. Please read and follow
all of the important information
and precautions about your vehi-
cle’s occupant safety features –
including seat belts and air bags
– that are provided in this manu-
al.
2. Be sure you and your passen- gers always wear seat belts prop-
erly.

Safety features of your vehicle38
3How does the air bag system
operate  Air bags are activated (able to inflate if
necessary) only when the ignition
switch is turned to the ON or START
position.
 Air bags inflate instantly in the event of serious frontal or side collision in order
to help protect the occupants from seri-
ous physical injury.
 There is no single speed at which the air bags will inflate.
Generally, air bags are designed to
inflate by the severity of a collision and
its direction. These two factors deter-
mine whether the sensors sendout an
electronic deployment/ inflation signal.
 Air bag deployment depends on a number of factors including vehicle
speed, angles of impact and the densi-
ty and stiffness of the vehicles or
objects which your vehicle hits in the
collision. Though, factors are not limit-
ed to those mentioned above.
 The front air bags will completely inflate and deflate in an instant.
It is virtually impossible for you to see
the air bags inflate during an accident. It is much more likely that you will sim-
ply see the deflated air bags hanging
out of their storage compartments after
the collision.
 In order to help provide protection in a severe collision, the air bags must
inflate rapidly. The speed of air bag
inflation is a consequence of the
extremely short time in which a collision
occurs and the need to get the air bag
between the occupant and the vehicle
structures before the occupant impacts
those structures. This speed of inflation
reduces the risk of serious or life-
threatening injuries in a severe collision
and is thus a necessary part of air bag
design.
However, air bag inflation can also
cause injuries which normally can
include facial abrasions, bruises and
broken bones because the inflation
speed also causes the air bags to
expand with a great deal of force.
 There are even circumstances under which contact with the air bag
can cause fatal injuries, especially if
the occupant is positioned exces-
sively close to the air bag.
WARNING
 To avoid severe personal injuryor death caused by deploying air
bags in a collision, the driver
should sit as far back from the
steering wheel air bag as possi-
ble (at least 10 inches (250 mm)
away). The front passengers
should always move their seats
as far back as possible and sit
back in their seat.
 Air bags inflate instantly in the event of collision, and passen-
gers may be injured by the air bag
expansion force if they are not in
proper position.
 Air bag inflation may cause injuries which normally include
facial or bodily abrasions,
injuries from broken glasses or
burns by the air bag inflation
gasses.

Safety features of your vehicle40
3C041000AUNAir bag warning lightThe purpose of air bag warning light in
your instrument panel is to alert you of a
potential problem with your air bag -
Supplemental Restraint System (SRS). When the ignition switch is turned ON,
the indicator light should illuminate for
approximately 6 seconds, then go off.
Have the system checked if:
 The light does not turn on briefly when
you turn the ignition ON.
 The light stays on after illuminating for approximately 6 seconds.
 The light comes on while the vehicle is in motion.
 The light blinks when the ignition switch is in ON position.
SRS components and functionsThe SRS consists of the following com-
ponents:
1. Driver's front air bag module
2. Passenger's front air bag module
3. Side impact air bag modules
4. Curtain air bag modules
5. Retractor pre-tensioner assemblies
6. Air bag warning light
7. SRS control module (SRSCM)
8. Front impact sensors
9. Side impact sensors
10. PASS AIR BAG “OFF” indicator (Front passenger’s seat only)
11. Occupant classification system (Front passenger’s seat only)
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341
Safety features of your vehicle
12. Driver’s and front passenger’s seatbelt buckle sensors
13. Driver’s seat track position sensor
14. Anchor pre-tensioner
15. Side pressure sensor
The SRSCM continually monitors all
SRS components while the ignition
switch is ON to determine if a crash
impact is severe enough to require air
bag deployment or pre-tensioner seat
belt deployment.
The SRS air bag warning light " " on the
instrument panel will illuminate for about 6
seconds after the ignition switch is turned
to the ON position, after which the SRS air
bag warning light " " should go out.
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WARNING
If any of the following conditions
occurs, this indicates a malfunction
of the SRS. Have an authorized
HYUNDAI dealer inspect the air bag
system as soon as possible.
 The light does not turn on brieflywhen you turn the ignition ON.
 The light stays on after illuminat- ing for approximately 6 seconds.
 The light comes on while the vehicle is in motion.
 The light blinks when the ignition switch is in ON position.

347
Safety features of your vehicle
When an adult is seated in the front pas-
senger seat, if the PASS AIR BAG “OFF”
indicator is on, turn the ignition switch to
the LOCK or OFF position and ask the
passenger to sit properly (sitting upright
with the seat back in an upright position,
centered on the seat cushion with their
seat belt on, legs comfortably extended
and their feet on the floor). Restart the
engine and have the person remain in
that position. This will allow the system to
detect the person and to enable the pas-
senger air bag.If the PASS AIR BAG "OFF" indicator is
still on, ask the passenger to move to the
rear seat.
✽ ✽
NOTICEThe PASS AIR BAG "OFF" indicator
illuminates for about 4 seconds after the
ignition switch is turned to the ON posi-
tion or after the engine is started. If the
front passenger seat is occupied, the
occupant classification sensor will then
classify the front passenger after several
more seconds.
B990A01O
WARNING
Do not allow an adult passenger to
ride in the front seat when the PASS
AIR BAG “OFF” indicator is illumi-
nated because the air bag will not
deploy in the event of a crash. If the
PASS AIR BAG "OFF" indicator
remains illuminated after the adult
passenger repositions themselves
properly and the car is restarted, it
is recommended that passenger
move to the rear seat because the
passenger's front air bag will not
deploy.
Front seat passengers must stay
properly seated to avoid serious
injury from a deploying air bag.
Proper position
WARNING
Do not put a heavy load in the front
passenger seatback pocket or on the
front passenger seat. Do not hang
onto the front passenger seat. Do not
hang any items, such as a seatback
table, on the front passenger seat-
back. Do not place feet on the front
passenger seatback. Do not place
any items under the front passenger
seat. Any of these could interfere
with proper sensor operation.
WARNING
 Even though your vehicle is
equipped with the occupant clas-
sification system, never install a
child restraint system in the front
passenger's seat. A deploying air
bag can forcefully strike a child
resulting in serious injuries or
death. Any child age 12 and
under should ride in the rear seat.
Children too large for child
restraints should use the avail-
able lap/shoulder belts. No mat-
ter what type of crash, children of
all ages are safer when restrained
in the rear seat.
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349
Safety features of your vehicle
Driver's and passenger's front air
bagYour vehicle is equipped with a
Supplemental Restraint (Air Bag) System
and lap/shoulder belts at both the driver
and passenger seating positions. The
indications of the system's presence are
the letters "SRS AIR BAG" or “AIR BAG"
embossed on the air bag pad cover in the
steering wheel and the passenger's side
front panel pad above the glove box.
The SRS consists of air bags installed
under the pad covers in the center of the
steering wheel and the passenger's side
front panel above the glove box.The purpose of the SRS is to provide the
vehicle's driver and/or the front passen-
ger with additional protection than that
offered by the seat belt system alone in
case of a frontal impact of sufficient
severity. The SRS uses sensors to gath-
er information about the driver's seat
position, the driver's and front passen-
ger's seat belt usage and impact severi-
ty.
OYF039030
Driver’s front air bag
WARNING
If the occupant classification sys-
tem is not working properly, the
SRS air bag warning light on the
instrument panel will illuminate
because the passenger's front air
bag is connected with the occupant
classification system. If there is a
malfunction of the occupant classi-
fication system, the PASS AIR BAG
"OFF" indicator will not illuminate
and the passenger's front air bag
will inflate in frontal impact crashes
even if there is no occupant in the
front passenger's seat. If the SRS
air bag warning light does not illu-
minate when the ignition switch is
turned to the ON position, remains
illuminated after approximately 6
seconds when the ignition switch is
turned to the ON position, or if it
illuminates while the vehicle is
being driven, have an authorized
HYUNDAI dealer inspect the occu-
pant classification system and the
SRS air bag system as soon as
possible.
OYF039031
Passenger’s front air bag

Safety features of your vehicle50
3
The driver's seat track position sensor,
which is installed on the seat track, deter-
mines if the seat is fore or aft of a refer-
ence position. The seat belt buckle sen-
sors determine if the driver and front pas-
senger's seat belts are fastened. These
sensors provide the ability to control the
SRS deployment based on how close the
driver's seat is to the steering wheel,
whether or not the seat belts are fas-
tened, and how severe the impact is.
The advanced SRS offers the ability to
control the air bag inflation within two lev-
els. A first stage level is provided for mod-
erate-severity impacts. A second stage
level is provided for more severe impacts.
According to the impact severity, seating
position and seat belt usage, the SRSCM
(SRS Control Module) controls the air
bag inflation. Failure to properly wear
seat belts can increase the risk or sever-
ity of injury in an accident. Additionally, your vehicle is equipped
with an occupant classification system in
the front passenger's seat. The occupant
classification system detects the pres-
ence of a passenger in the front passen-
ger's seat and will turn off the front pas-
senger's air bag under certain condi-
tions. For more detail, see "Occupant
classification system" in this section.
WARNING
If the occupant classification sys-
tem is not working properly, the
SRS air bag warning light on the
instrument panel will illuminate
because the SRS air bag warning
light is connected with the occu-
pant classification system. If the
SRS air bag warning light does not
illuminate when the ignition switch
is turned to the ON position,
remains illuminated after approxi-
mately 6 seconds when the ignition
switch is turned to the ON position,
or if it illuminates while the vehicle
is being driven, have an authorized
HYUNDAI dealer inspect the
advanced SRS air bag system as
soon as possible.
WARNING
 Modification to the seat structure
can adversely affect the seat
track position sensor and cause
the air bag to deploy at a different
level than should be provided.
 Do not place any objects under- neath the front seats as they
could damage the seat track
position sensor or interfere with
the occupant classification sys-
tem.
 Do not place any objects that may cause magnetic fields near the
front seat. These may cause a
malfunction of the seat track
position sensor.

Safety features of your vehicle54
3
Curtain air bagCurtain air bags are located along both
sides of the roof rails above the front and
rear doors.
They are designed to help protect the
heads of the front seat occupants and
the rear outboard seat occupants in cer-
tain side impact collisions.
WARNING
 The side impact air bag is sup-
plemental to the driver's and the
passenger's seat belt systems
and is not a substitute for them.
Therefore your seat belts must be
worn at all times while the vehicle
is in motion. The air bags deploy
only in certain side impact condi-
tions severe enough to cause
significant injury to the vehicle
occupants.
 For best protection from the side impact air bag system and to
avoid being injured by the
deploying side impact air bag,
both front seat occupants should
sit in an upright position with the
seat belt properly fastened. The
driver's hands should be placed
on the steering wheel at the 9:00
and 3:00 positions. The passen-
ger's arms and hands should be
placed on their laps.
 Do not use any accessory seat covers.
(Continued)
(Continued)
 Use of seat covers could reduceor prevent the effectiveness of
the system.
 Do not install any accessories on the side or near the side air bag.
 Do not place any objects over the air bag or between the air bag
and yourself.
 Do not place any objects (an umbrella, bag, etc.) between the
front door and the front seat.
Such objects may become dan-
gerous projectiles and cause
injury if the supplemental side air
bag inflates.
 To prevent unexpected deploy- ment of the side impact air bag
that may result in personal injury,
avoid impact to the side impact
sensor when the ignition switch
is on.
 If the seat or seat cover is dam- aged, have the vehicle checked
and repaired by an authorized
HYUNDAI dealer because your
vehicle is equipped with side
impact air bags and an occupant
classification system.
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Safety features of your vehicle56
3Why didn’t my air bag go off in a
collision? (Inflation and non-infla-
tion conditions of the air bag)There are many types of accidents in
which the air bag would not be expect-
ed to provide additional protection.
These include rear impacts, second or
third collisions in multiple impact
accidents, as well as low speed
impacts. In other words, just because
your vehicle is damaged and even if it
is totally unusable, don’t be surprised
that the air bags did not inflate.
Air bag collision sensors(1) SRS control module
(2) Front impact sensor (3) Side impact sensor
(4) Side pressure sensor
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1
2
3
4

357
Safety features of your vehicle
Air bag inflation conditionsFront air bags
Front air bags are designed to inflate in a
frontal collision depending on the intensi-
ty, speed or angles of impact of the front
collision.
WARNING
 Do not hit or allow any objects toimpact the locations where air
bags or sensors are installed.
This may cause unexpected air
bag deployment, which could
result in serious personal injury
or death.
 If the installation location or angle of the sensors is altered in
any way, the air bags may deploy
when they should not or they may
not deploy when they should,
causing severe injury or death.
Therefore, do not try to perform
maintenance on or around the air
bag sensors. Have the vehicle
checked and repaired by an
authorized HYUNDAI dealer.
(Continued)
(Continued)
 Problems may arise if the sensorinstallation angles are changed
due to the deformation of the
front bumper, body or B pillars or
front door where side collision
sensors are installed. Have the
vehicle checked and repaired by
an authorized HYUNDAI dealer.
 Your vehicle has been designed to absorb impact and deploy the
air bag(s) in certain collisions.
Installing bumper guards or
replacing a bumper with non-gen-
uine parts may adversely affect
your vehicle’s collision and air
bag deployment performance.
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