sensor Hyundai Elantra 2008 User Guide

347
Safety features of your vehicle
Frontal air bags are not designed to
inflate in rear collisions, because occu-
pants are moved backward by the
force of the impact. In this case, inflat-
ed air bags would not be able to pro-
vide any additional benefit. Front air bags may not inflate in side
impact collisions, because occupants
move to the direction of the collision,
and thus in side impacts, frontal air bag
deployment would not provide addi-
tional occupant protection.
However, side or curtain air bags may
inflate depending on the intensity, vehi-
cle speed and angles of impact. In a slant or 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 bene-
fit, and thus the sensors may not
deploy any air bags.
1VQA2087
1JBA3521
1JBA3516

Safety features of your vehicle48 3 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 signifi-
cantly reduced by such “under-ride”
collisions. Air bags may not inflate in rollover acci-
dents because air bag deployment
would not provide protection to the
occupants.
However, side and/or curtain air bags
may inflate when the vehicle is rolled
over by a side impact collision, if the
vehicle is equipped with side air bags
and curtain air bags. Air bags may not inflate if the vehicle
collides with objects such as utility
poles or trees, where the point of
impact is concentrated to one area and
the full force of the impact is not deliv-
ered to the sensors.
1JBA3517
1JBA3522
1JBA3518

349
Safety features of your vehicle
How does the air bag system
operate Air bags are activated (able to inflate if
necessary) only when the ignition
switch is turned to ON or START posi-
tion.
Air bags inflate instantly in the event of
a serious frontal or side collision (if
equipped with side air bag or curtain
air bag) in order 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 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, and sometimes more
severe injuries 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 steer-
ing wheel air bag can cause fatal
injuries, especially if the occupant
is positioned excessively close to
the steering wheel.
WARNING
To avoid severe personal injury
or 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 passenger
should always move their seat as
far back as possible and sit back
in their seat.
Air bag inflates 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.

411
Features of your vehicle
Impact sensing door unlock sys-
tem (if equipped)All doors will be automatically unlocked
when the impact is delivered to impact
sensors while the ignition switch ON.
However, the doors may not be unlocked
when there are some problems of
mechanical door lock system or battery.Speed sensing door lock system
(if equipped)When the speed of the vehicle is above
approximately 12 MPH (20 km/h) for 1
second, it will automatically lock all
doors. For activation of this feature, con-
tact an authorized Hyundai dealer.
Child-protector rear door lockThe child safety lock is provided to help
prevent children from accidentally open-
ing the rear doors from inside the vehicle.
The rear door safety locks should be
used whenever children are in the vehi-
cle.
1. Open the rear door.
2. Push the child safety lock located on
the rear edge of the door to the “Lock”
position. When the child safety lock is
in the “Lock ( )” position, rear door
will not open even though the inner
door handle is pulled inside the vehi-
cle.3. Close the rear door.
To open the rear door, pull the outside
door handle (1).
Even though the doors may be unlocked,
the rear door will not open by pulling the
inner door handle (2) until rear door child
safety lock is unlocked ( ).
WARNING
- Rear door
locks
If children accidentally open the
rear doors while the vehicle is in
motion, they could fall out and be
severely injured or killed. To pre-
vent children from opening the rear
doors from the inside, the rear door
safety locks should be used when-
ever children are in the vehicle.
OHD046005

Features of your vehicle30 4Inside rearview mirrorDay/night rearview mirror Adjust the rearview mirror to center on
the view through the rear window. Make
this adjustment before you start driving.
Make this adjustment before you start
driving and while the day/night lever is in
the day position.
Pull the day/night lever toward you to
reduce glare from the headlights of vehi-
cles behind you during night driving.
Remember that you lose some rearview
clarity in the night position.Electric chromic mirror (ECM)
(if equipped)
The electric rearview mirror automatical-
ly controls the glare from the headlights
of the car behind you in nighttime or low
light driving conditions. The sensor
mounted in the mirror senses the light
level around the vehicle, and through a
chemical reaction, automatically controls
the headlight glare from vehicles behind
you.
When the engine is running, the glare is
automatically controlled by the sensor
mounted in the rearview mirror.
Whenever the shift lever is shifted into
reverse (R), the mirror will automatically
go to the brightest setting in order to
improve the drivers view behind the vehi-
cle.
MIRRORS
WARNING -
Rear visibility
Do not place objects in the rear
seat or cargo area which would
interfere with your vision out the
rear window.
OHD046023
CAUTION
When cleaning the mirror, use a
paper towel or similar material
dampened with glass cleaner. Do
not spray glass cleaner directly on
the mirror as that may cause the liq-
uid cleaner to enter the mirror hous-
ing.

431
Features of your vehicle
To operate the electric rearview mirror
Press the ON/OFF button (1) to turn
the automatic dimming function on.
The mirror indicator light will illuminate.
Press the ON/OFF button to turn the
automatic- dimming function off. The
mirror indicator light will turn off.
The mirror defaults to the ON position
whenever the ignition switch is turned
on.
Electric chromic mirror with homelink
system (if equipped)To operate the electric rearview mirror
Press the I button (1) to turn the auto-
matic- dimming function on. The mirror
indicator light will illuminate.
Press the O button (2) to turn the auto-
matic- dimming function off. The mirror
indicator light will turn off.HomeLink® Wireless Control System
Your new mirror comes with an integrat-
ed HomeLink Universal Transceiver,
which allows you to program the mirror to
activate your garage door(s), estate gate,
home lighting, etc. The mirror actually
learns the codes from your various exist-
ing transmitters.
OHD046024
OHD046025N
OHD046305N Glare detection sensor
Indicator light
Homelink buttons

What to do in an emergency8 6
Low tire pressure tell-
tale
When the tire pressure monitoring
system warning telltale is illuminat-
ed, one or more of your tires is sig-
nificantly under-inflated.
Immediately reduce your speed,
avoid hard cornering and anticipate
increased stopping distances. You
should stop and check your tires as
soon as possible. Inflate the tires to
the proper pressure as indicated on
the vehicle’s placard or tire inflation
pressure label located on the driver’s
side center pillar outer panel. If you
cannot reach a service station or if
the tire cannot hold the newly added
air, replace the low pressure tire with
the compact spare tire. Because the
compact spare tire is not equipped
with a tire pressure sensor, the
TPMS malfunction indicator may go
on and the Low Tire Pressure telltale
still turn on after restarting and about
20 minutes of continuous driving
before you have the low-pressure tire
repaired and replaced on the vehicle.
WARNING
- Low pressure
damage
Significantly low tire pressure
makes the vehicle unstable and
can contribute to loss of vehicle
control and increased braking
distances.
Continued driving on low pres-
sure tires will cause the tires to
overheat and fail.
CAUTION
In winter or cold weather, the
low tire pressure telltale may be
illuminated if the tire pressure
was adjusted to the recom-
mended tire inflation pressure
in warm weather. It does not
mean your TPMS is malfunction-
ing because the decreased tem-
perature leads to a proportional
lowering of tire pressure.
When you drive your vehicle
from a warm area to a cold area
or from a cold area to a warm
area, or the outside temperature
is greatly higher or lower, you
should check the tire inflation
pressure and adjust the tires to
the recommended tire inflation
pressure.

69
What to do in an emergency
TPMS (Tire Pressure
Monitoring System)
malfunction indicator
The TPMS malfunction indicator
comes on and stays on when there is
a problem with the Tire Pressure
Monitoring System. If the system is
able to correctly detect an under-
inflation warning at the same time as
system failure then it will illuminate
both the TPMS malfunction and the
low tire pressure telltale e.g. If Front
Left sensor fails, the TPMS malfunc-
tion indicator comes on, but if Front
Right, Rear Left, or Rear Right tire is
under-inflated, the low tire pressure
telltale may come on with the TPMS
malfunction indicator.
Have the system checked by an
authorized HYUNDAI dealer as soon
as possible to determine the cause
of the problem.Changing a tire with TPMS
If you have a flat tire, the Low Tire
Pressure Telltale will turn on. Have
the flat tire repaired by an authorized
HYUNDAI dealer as soon as possi-
ble or replace the flat tire with the
compact spare tire.
Each wheel is equipped with a tire
pressure sensor mounted inside the
tire behind the valve stem. You must
use TPMS specific wheels. It is rec-
ommended that you always have
your tires serviced by an authorized
HYUNDAI dealer as soon as possi-
ble.
TPMS
CAUTION
NEVER use a puncture-repair-
ing agent to repair and/or inflate
a low pressure tire. If used, you
will have to replace the tire pres-
sure sensor.
CAUTION
The TPMS malfunction indica-
tor may be illuminated if the
vehicle is moving around elec-
tric power supply cable or
radio transmitter such as
police stations, government
and public offices, broadcast-
ing stations, military installa-
tions, airports, or transmitting
tower, etc. which can interfere
with normal operation of the
Tire Pressure Monitoring
System (TPMS).
The TPMS malfunction indica-
tor may be illuminated if snow
chains or some electronic
devices, such as notebook
computers, are used in the
vehicle. This can interfere with
normal operation of the Tire
Pressure Monitoring System
(TPMS).

What to do in an emergency10 6After you replace the low pressure
tire with the compact spare tire, the
TPMS malfunction indicator may illu-
minate and the low tire pressure tell-
tale still illuminate after restarting
and about 20 minutes of continuous
driving.
Once the low pressure tire is re-inflat-
ed to the recommended pressure
and installed on the vehicle, the
TPMS malfunction indicator and the
low tire pressure telltale will be extin-
guished. If the low pressure and
TPMS malfunction indicators are not
extinguished after about 20 minutes
of continuous driving, please visit an
authorized HYUNDAI dealer.
You may not be able to identify a low
tire by simply looking at it. Always use
a good quality tire pressure gauge to
measure the tire's inflation pressure.
Please note that a tire that is hot
(from being driven) will have a higher
pressure measurement than a tire
that is cold (from sitting stationary for
at least 3 hours and driven less than
1 mile (1,6 km) during that 3 hour
period). Allow the tire to cool before
measuring the inflation pressure.Always be sure the tire is cold before
inflating to the recommended pres-
sure.
A cold tire means the vehicle has
been sitting for 3 hours and driven for
less than 1 mile (1.6 km) in that 3
hour period.
WARNING
- TPMS
The TPMS cannot alert you to
severe and sudden tire dam-
age caused by external fac-
tors such as nails or road
debris.
If you feel any vehicle instabil-
ity, immediately take your foot
off the accelerator, apply the
brakes gradually and with
light force, and slowly move to
a safe position off the road.
CAUTION
Do not use any tire sealant if
your vehicle is equipped with
a Tire Pressure Monitoring
System. The liquid sealant can
damage the tire pressure sen-
sors.
In order for the system to cor-
rectlymonitor tires for under-
inflation, there should be a
total of exactly 4 sensors fit-
ted to each of the four driven
wheel positions. There should
be no other sensors in the
vehicle including spare tire
since this could cause the
system to monitor the wrong
sensors.

Maintenance24 7Replace the filter according to the
Scheduled Maintenance Section.If the vehicle is operated in extremely
dusty or sandy areas, replace the ele-
ment more often than the usual recom-
mended intervals. (Refer to
“Maintenance under severe usage condi-
tions” in this section.)
CAUTION
Do not drive with the air cleaner
removed; this will result in exces-
sive engine wear.
When removing the air cleaner fil-
ter, be careful that dust or dirt
does not enter the air intake, or
damage may result.
Use a Hyundai genuine part. Use
of nongenuine parts could dam-
age the air flow sensor.