2015 Hyundai Elantra sensor

Safety features of your vehicle
28
3 The Pre-Tensioner Seat Belt System
consists mainly of the following com-
ponents. Their locations are shown in
the illustration above:
1. SRS air bag warning light
2. Retractor pre-tensioner assembly
3. SRS control module
4. Anchor pre-tensioner assembly
✽ ✽
NOTICE
The sensor that activates the SRS air
bag is connected with the pre–ten-
sioner seat belts. The SRS air bag
warning light on the instrument panel
will illuminate for approximately 6
seconds after the ignition switch is
placed in the ON position, and then it
should turn off.
If the pre-tensioner is not working
properly, the warning light will illu-
minate even if the SRS air bag is not
malfunctioning. If the warning light
does not illuminate, stays illuminated
or illuminates when the vehicle is
being driven, have an authorized
HYUNDAI dealer inspect the pre-
tensioner seat belts and SRS air bags
as soon as possible.WARNING
Do not touch the pre-tensioner
seat belt assemblies for several
minutes after they have been
activated. When the pre-ten-
sioner seat belt mechanism
fires during a collision the pre-
tensioner becomes hot and can
burn you.
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Safety features of your vehicle
347
Where are the air bags?
Driver’s and passenger’s front airbags
Your vehicle is equipped with a
Advanced Supplemental Restraint
System (SRS) and lap/shoulder belts
at both the driver and passenger
seating positions.
The SRS consists of air bags which
are located in the center of the steer-
ing wheel and the passenger's side
front panel pad above the glove box.
The air bags are labeled with the let-
ters “AIR BAG” embossed on the pad
covers.
The purpose of the SRS is to provide
the vehicle's driver and front passen-
gers with additional protection than
that offered by the seat belt system
alone. The SRS uses sensors to
gather information about the driver's
seat position, the driver's and front
passenger's seat belt usage and
impact severity.
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■Driver’s front air bag
■Passenger’s front air bag
WARNING
To reduce the risk of serious
injury or death from an inflating
front air bags, take the following
precautions:
Seat belts must be worn at all
times to help keep occupants
positioned properly.
Move your seat as far back as possible from front air bags,
while still maintaining control
of the vehicle.
Never lean against the door or center console.
Do not allow the front passen-ger to place their feet or legs on
the dashboard.
No objects should be placed
over or near the air bag mod-
ules on the steering wheel,
instrument panel, and the front
passenger's panel above the
glove box. Such objects could
cause harm if the vehicle is in a
crash severe enough to cause
the air bags to deploy.

Safety features of your vehicle
50
3
SRS components and functions
The SRS consists of the following
components:
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 assem-
blies
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)
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.
WARNING
To reduce the risk of serious
injury or death from an inflating
curtain air bags, take the follow-
ing precautions:
All seat occupants must wear
seat belts at all times to help
keep occupants positioned
properly.
Properly secure child restraints
as far away from the door as
possible.
Do not allow passengers to
lean their heads or bodies
onto doors, put their arms on
the doors, stretch their arms
out of the window, or place
objects between the doors
and seats.
Do not open or repair the side
curtain air bags.
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Safety features of your vehicle
351
SRS warning light
The SRS (Supplement Restraint
System) air bag warning light on the
instrument panel displays the air bag
symbol depicted in the illustration. The
system checks the air bag electrical
system for malfunctions. The light indi-
cates that there is a potential problem
with your air bag system. During a moderate to severe frontal
collision, sensors will detect the vehi-
cle’s rapid deceleration. If the rate of
deceleration is high enough, the con-
trol unit will inflate the front air bags.
The front air bags help protect the
driver and front passenger by
responding to frontal impacts in
which seat belts alone cannot provide
adequate restraint.
Air bags are activated (able to
inflate if necessary) only when the
ignition switch is in the ON position.
Air bags inflate in the event of a severe frontal or side collision to
help protect the occupants from
serious physical injury.
There is no single speed at which the air bags will inflate. Generally,
air bags are designed to inflate
based upon the severity of a colli-
sion and its direction. These two
factors determine whether the sen-
sors produce an electronic deploy-
ment/inflation signal.
WARNING
If your SRS malfunctions, the
air bag may not inflate properly
during an accident increasing
the risk of serious injury or
death.
If any of the following condi-
tions occur, your SRS is mal-
functioning:
The light does not turn on for
approximately six seconds
when the ignition switch is
placed in the ON position.
The light stays on after illumi-
nating for approximately six
seconds.
The light comes on while the
vehicle is in motion.
The light blinks when the
engine is running.
Have an authorized HYUNDAI
dealer inspect the SRS as soon
as possible if any of these con-
ditions occur.

Safety features of your vehicle
56
3
Main components of the
Occupant Classification System
A detection device located within the front passenger seat.
Electronic system to determine whether the passenger air bag
should be activated or deactivated.
An indicator light located on the instrument panel which illuminates
the words "PASSENGER AIR BAG
OFF" indicating the front passen-
ger air bag system is deactivated.
The instrument panel air bag indi- cator light is interconnected with
the OCS. Front passenger seat adult occu-
pants who are properly seated and
wearing the seat belt properly,
should not cause the passenger air
bag to be automatically turned OFF.
However, if the occupant does not sit
in the seat properly (for example, by
not sitting upright, by sitting on the
edge of the seat, or by otherwise
being out of position), this could
cause the sensor to turn the air bag
OFF.
You will find the "PASSENGER AIR
BAG OFF" indicator on the center
facia panel. This system detects the
conditions 1-4 in the following table
and activates or deactivates the front
passenger air bag based on these
conditions.
Always be sure that you and all vehi-
cle occupants are seated properly
and wearing the seat belt properly for
the most effective protection by the
air bag and the seat belt. The OCS may not function properly if
the passenger takes actions which
can affect the classification system.
These include:
Failing to sit in an upright position.
Leaning against the door or center
console.
Sitting towards the sides of the front of the seat.
Putting their legs on the dashboard or resting them on other locations
which reduce the passenger
weight on the front seat.
Wearing the seat belt improperly.
Reclining the seatback.

Safety features of your vehicle
361
Air bag collision sensors
(1) SRS control module/Rollover sensor
(2) Front impact sensor
(3) Side impact sensor
WARNING
To reduce the risk of an air bag
deploying unexpectedly and
causing serious injury or death:
Do not hit or allow any objects
to impact the locations where air
bags or sensors are installed.
Do not perform maintenance
on or around the air bag sen-
sors. If the location or angle of
the sensors is altered, the air
bags may deploy when they
should not or may not deploy
when they should.
Do not install bumper guards
or replace the bumper with a
non-genuine HYUNDAI parts.
This may adversely affect the
collision and air bag deploy-
ment performance.
Have all repairs conducted by
an authorized HYUNDAI dealer.
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Safety features of your vehicle
62
3
Air bag deployment conditions
Front air bag
Front air bags are designed to inflate
in a frontal collision depending on
the intensity, speed, or angles of
impact of the front collision.
Side impact and curtain air bags
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 driver’s and front pas-
senger’s air bags are designed to
inflate only in frontal collisions, they
also may inflate in other types of col-
lisions 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 unimproved
roads, the air bags may deploy. Drive
carefully on unimproved roads or on
surfaces not designed for vehicle
traffic to prevent unintended air bag
deployment.
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Safety features of your vehicle
64
3 In an angled collision, the force of
impact may direct the occupants in a
direction where the air bags would
not be able to provide any additional
benefit, and thus the sensors may
not deploy any air bags.
Just before impact, drivers often
brake heavily. Such heavy braking
lowers the front portion of the vehicle
causing it to “ride” under a vehicle
with a higher ground clearance. Air
bags may not inflate in this "under-
ride" situation because deceleration
forces that are detected by sensors
may be significantly reduced by such
“underride” collisions.Air bags do not inflate in rollover
accidents because vehicle can not
detect rollover accident.
However, side and curtain air bags
may inflate when the vehicle is rolled
over after a side impact collision.
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