2018 Hyundai Elantra sensors

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Safety system of your vehicle
Where Are the Air Bags?
Driver's and passenger's frontair bags
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 steering
wheel, in the driver's side lower crash
pad below the steering wheel column
and the passenger's side front panel pad
above the glove box.
The air bags are labeled with the letters
"AIR BAG" embossed on the pad covers. The purpose of the SRS is to provide the
vehicle's driver and front passengers
with additional protection than that
offered by the seat belt system alone.
The SRS uses sensors to gather infor-
mation about the driver’s and front pas-
senger's seat belt usage and impact
severity.
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 SRS Control Module
(SRSCM) controls the air bag inflation.
Failure to properly wear seat belts can
increase the risk or severity of injury in
an accident.
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■Driver's knee air bag
■Driver's front air bag
■Passenger's front air bag

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Safety system of your vehicle
2
The curtain air bags are designed to
deploy only during certain side impact
collisions, depending on the crash sever-
ity, angle, speed and impact.
The side and curtain air bags on both
sides of the vehicle may deploy if a
rollover or possible rollover is detected.
The curtain air bags are not designed to
deploy in all side impact or rollover situa-
tions.How Does the Air Bag System
Operate?
The SRS consists of the following com-
ponents:
1. Driver's front air bag module
2. Passenger's front air bag module
3. Side air bag modules
4. Curtain air bag modules
5. Retractor pre-tensioner assemblies
6. Air bag warning light
7. SRS control module (SRSCM)/Rollover sensor
8. Front impact sensors
9. Side impact sensors
10. Side pressure sensors
11. Driver's knee air bag module
To reduce the risk of serious injury
or death from an inflating curtain
air bags, take the following precau-
tions:
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 pos-
sible.
Do not place any objects over the
air bag. Also, do not attach any
objects around the area the air
bag inflates such as the door,
side door glass, front and rear pil-
lar, roof side rail.
(Continued)
(Continued)
Do not hang other objects except
clothes, especially hard or break-
able objects. In an accident, it
may cause vehicle damage or
personal injury.
Do not allow passengers to lean
their heads or bodies onto doors,
put their arms on the doors,
stretch their arms out of the win-
dow, or place objects between
the doors and seats.
Do not open or repair the side
curtain air bags.
WARNING
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Safety system of your vehicle
12. Emergency Fastening DeviceSystem
13. Occupant classification system
The SRSCM (Supplemental Restraint
System Control Module) continually
monitors all SRS components while the
ignition switch is in the ON position to
determine if a crash impact is severe
enough to require air bag deployment or
pre-tensioner seat belt deployment.
SRS warning light
The SRS (Supplement Restraint System)
air bag warning light on the instrument
panel displays the air bag symbol depict-
ed in the illustration. The system checks
the air bag electrical system for malfunc-
tions. The light indicates that there is a
potential malfunction with your air bag
system, which could include your side
and curtain air bags used for rollover pro-
tection. During a frontal collision, sensors will
detect the vehicle's deceleration. If the
rate of deceleration is high enough, the
control 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. When
needed, the side air bags help provide
protection in the event of a side impact or
rollover.
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 certain frontal or side collisions to help protect
the occupants from serious physical
injury.
Generally, air bags are designed to inflate based upon the severity of a col-
lision, its direction, etc. These two fac-
tors determine whether the sensors
produce an electronic deployment/
inflation signal.
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 conditions
occur, your SRS is malfunctioning:
The light does not turn on for
approximately six seconds when
the ignition switch is in the ON
position.
The light stays on after illuminat-
ing for approximately six sec-
onds.
The light comes on while the
vehicle is in motion.
The light blinks when the engine
is running.
Have an authorized HYUNDAI deal-
er inspect the SRS as soon as pos-
sible if any of these conditions
occur.
WARNING

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Safety system of your vehicle
2
Why Didn't My Air Bag Go Off
in a Collision?
Air bags are not designed to inflate in
every collision. There are certain types of
accidents in which the air bag would not
be expected to provide additional protec-
tion. These include rear impacts, second
or third collisions in multiple impact acci-
dents, as well as low speed impacts.
Damage to the vehicle indicates a colli-
sion energy absorption, and is not an
indicator of whether or not an air bag
should have inflated.
Air bag collision sensors
NEVER place a rear-facing or
front-facing child restraint in the
front passenger’s seat of the
vehicle.
An inflating frontal air bag could
forcefully strike a child resulting
in serious injury or death.
Always properly restrain children
in an appropriate child restraint
in the rear seat of the vehicle.
WARNING
To reduce the risk of an air bag
deploying unexpectedly and caus-
ing 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 sensors. If
the location or angle of the sen-
sors 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 deployment perform-
ance.
Place the ignition switch in the
LOCK/OFF or ACC position when
the vehicle is being towed to pre-
vent inadvertent air bag deploy-
ment.
Have all air bag repairs conduct-
ed by an authorized HYUNDAI
dealer.
WARNING

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Safety system of your vehicle
2
Air bag inflation conditions
Front air bags
Front air bags and the driver’s knee air
bag are designed to inflate in a frontal
collision depending on the the severity of
impact of the front collision.
Side and curtain air bags
Side and curtain air bags are designed to
inflate when an impact is detected by
side collision sensors depending on the
severity of impact resulting from a side
impact collision.Although the driver’s and front passen-
ger’s air bags are designed to inflate only
in frontal collisions, they also may inflate
in other types of collisions if the front
impact sensors detect a sufficient
impact. Side and curtain air bags are
designed to inflate only in side impact
collisions or rollover situations, 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 system of your vehicle
2
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.Front air bags may not inflate in rollover
accidents because air bag deployment
could not provide protection to the occu-
pants.
However, side and curtain air bags may
inflate when the vehicle is rolled over by
a side impact collision.
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Driving your vehicle
5
The Blind Spot Detection System (BSD)
uses radar sensors in the rear bumper to
monitor and warn the driver of an
approaching vehicle in the driver's blind
spot area.
The system monitors the rear area of the
vehicle and provides information to the
driver with an audible alert and an indi-
cator on the outer side view mirrors.(1) BSD (Blind Spot Detection)
The blind spot detection range varies
relative to vehicle speed. Note that if
your vehicle is traveling much faster
than the vehicles around you, the
warning will not occur.
(2) LCA (Lane Change Assist) The Lane Change Assist feature will
alert you when a vehicle is approach-
ing in an adjacent lane at a high rate
of speed. If the driver activates the
turn signal when the system detects
an oncoming vehicle, the system
sounds an audible alert.
(3) RCTA (Rear Cross Traffic Alert) The Rear Cross Traffic Alert feature
monitors approaching cross traffic
from the left and right side of the vehi-
cle when your vehicle is in reverse.
The feature will operate when the
vehicle is moving in reverse below
about 6 mph (10 km/h). If oncoming
cross traffic is detected a warning
chime will sound.
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Blind spot area
Closing at high speed
Always be aware of road condi-
tions while driving and be alert for
unexpected situations even
though the Blind Spot Detection
System is operating.
The Blind Spot Detection System
(BSD) is not a substitute for prop-
er and safe driving. Always drive
safely and use caution when
changing lanes or backing up the
vehicle. The Blind Spot Detection
System (BSD) may not detect
every object alongside the vehi-
cle.
WARNING

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Driving your vehicle
5
Detecting sensor
The sensors are located inside the rear
bumper.
Always keep the rear bumper clean for
the proper operation of the system.
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■ Left side
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■ Right side
Second stage alert
A warning chime to alert the driver will activate when:
1. A vehicle has been detected in the blind spot area by the radar system (the
warning light will illuminate on the outer side view mirror) AND
2. The turn signal is applied (same side as where the vehicle is being detected).
When this alert is activated, the warning light on the side view mirror will also blink.
If you turn off the turn signal indicator, the warning chime will be deactivated.OAD055031