2012 Hyundai Accent Sensors

335
Safety features of your vehicle
How does the air bag system
operate
Air bags are activated (able to inflate ifnecessary) 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 send out 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.

337
Safety features of your vehicle
C041000AUN
Air bag warning light
The 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 functions
The 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 detection system (Front passenger’s seat only)
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Safety features of your vehicle
38
3
12. Driver’s and front passenger’s seat
belt buckle sensors
13. Anchor pre-tensioner
14. 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.
W7-147
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.

Safety features of your vehicle
46
3
Driver's and passenger's front air
bag
Your vehicle is equipped with an
Advanced 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 gather
information about the driver's seat posi-
tion, the driver's and front passenger's
seat belt usage and impact severity.
WARNING
If the occupant detection system is
not working properly, the SRS air
bag warning light on the instru-
ment panel will illuminate because
the passenger's front air bag is
connected with the occupant
detection system. If there is a mal-
function of the occupant detection
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 illuminate
when the ignition switch is turned
to the ON position, remains illumi-
nated after approximately 6 sec-
onds 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 detection system and the SRS
air bag system as soon as possible.
ORB030010
Driver’s front air bag
ORB030011
Passenger’s front air bag

347
Safety features of your vehicle
The seat belt buckle sensors determine if
the driver and front passenger's seat
belts are fastened. These sensors pro-
vide the ability to control the SRS deploy-
ment based on whether or not the seat
belts are fastened, 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 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 severity of injury in
an accident.Additionally, your vehicle is equipped
with an occupant detection system in the
front passenger's seat. The occupant
detection system detects the presence of
a passenger in the front passenger's seat
and will turn off the front passenger's air
bag under certain conditions. For more
detail, see "Occupant detection system"
in this section.
WARNING
If the occupant detection system is
not working properly, the SRS air
bag warning light on the instru-
ment panel will illuminate because
the SRS air bag warning light is
connected with the occupant
detection system. If the SRS air bag
warning light does not illuminate
when the ignition switch is turned
to the ON position, remains illumi-
nated after approximately 6 sec-
onds 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
Do not place any objects under-
neath the front seats as they could
interfere with the occupant detec-
tion system.

353
Safety features of your vehicle
Why 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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Safety features of your vehicle
54
3
Air bag inflation conditions
Front 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 to
impact 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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355
Safety features of your vehicle
Side impact and curtain air bags
(if equipped)
Side impact and curtain air bags are
designed to inflate when an impact is
detected by side collision sensors
depending on the strength, speed or
angles of impact resulting from a side
impact collision.Although the front air bags (driver’s and
front passenger’s air bags) are designed
to inflate only in frontal collisions, they
also may inflate in other types of colli-
sions if the front impact sensors detect a
sufficient impact. Side impact and curtain
air bags are designed to inflate only in
side impact collisions, but they may
inflate in other collisions if the side
impact sensors detect a sufficient
impact.
If the vehicle chassis is impacted by
bumps or objects on unpaved roads, the
air bags may deploy. Drive carefully on
unpaved roads or on surfaces not
designed for vehicle traffic to prevent
unintended air bag deployment.
Air bag non-inflation conditions
In certain low-speed collisions the air
bags may not deploy. The air bags are
designed not to deploy in such cases
because they may not provide benefits
beyond the protection of the seat belts
in such collisions.
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OMD030044
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