Hyundai Sonata 2005 Service Manual

1FEATURES OF YOUR HYUNDAI28
!
WARNING:
o A child restraint system must be placed
in the rear seat. Never install a child or
infant seat on the front passenger's seat.
Should an accident occur and cause the
passenger side airbag to deploy, it could
severely injure or kill an infant or child
seated in an infant or child seat. Thus
only use a child restraint in the rear seat
of your vehicle.
o A safety belt or child restraint system
can become very hot if it is left in a closed
vehicle on a sunny day, even if the out-
side temperature does not feel hot. Be
sure to check the seat cover and buckles
before placing a child there.
o When the child restraint system is not in
use, store it in the trunk or fasten it with
a safety belt so that it will not be thrown
forward in the case of a sudden stop or
an accident.
o Children who are too large to be in a child
restraint should sit in the rear seat and be
restrained with the available lap/shoul-
der belts. Never allow children to ride in
the front passenger seat.
B220C02A-GATTo Release the Seat BeltWhen you want to release the seat belt, press
the button in the locking buckle.
!
WARNING:
When fastening the outboard seat belts or
the center seat belt, make sure they are
inserted into the correct buckles to obtain
maximum protection from the seat belt
system and assure proper operation.
CHILD RESTRAINT SYSTEMB230A03Y-AATChildren riding in the car should sit in the rear
seat and must always be properly restrained to
minimize the risk of injury in an accident, sudden
stop or sudden maneuver. According to acci-
dent statistics provided by the National High-
way Traffic Safety Administration (NHTSA),
children are safer when properly restrained in
the rear seats than in the front seat. Larger
children not in a child restraint should use one
of the seat belts provided.
All 50 states have child restraint laws. You
should be aware of the specific requirements in
your state. Child and/or infant safety seats must
be properly placed and installed in the rear seat.
You must use a commercially available child
restraint system that meets the requirements of
the Federal Motor Vehicle Safety Standards
(FMVSS).
Children could be injured or killed in a crash if
their restraints are not properly secured. For
small children and babies, a child seat or infant
seat must be used. Before buying a particular
child restraint system, make sure it fits your car
seat and seat belts, and fits your child. Follow
all the instructions provided by the manufac-
turer when installing the child restraint system.
B220C02NF-A

1
FEATURES OF YOUR HYUNDAI
29
!
WARNING:
o Always make sure that the shoulder belt
portion of the lap/shoulder belt is posi-
tioned midway over the shoulder and
never across the neck or behind the
back. Moving the child closer toward the
seat belt buckle may help provide a good
shoulder belt fit. The lap belt portion of
the lap/shoulder belt must always be
positioned as low as possible on the
child's hips, and as snug as possible.
o If the seat belt will not properly fit the
child, Hyundai recommends the use of
an approved booster seat in the rear seat
in order to raise the child's seating height
so that the seat belt will properly fit the
child.
Before purchasing a booster seat, make
sure that it meets applicable Federal
Motor Vehicle Safety Standards (FMVSS)
and that it is satisfactory for use with this
vehicle.
o Never allow a child to stand up or kneel
on the seat.
o Never use an infant carrier or a child
safety seat that "hooks" over a seatback;
it may not provide adequate security in
an accident.
WARNING:
o Never allow a child to be held in a person's
arms while they are in a moving vehicle,
as this could result in serious injury to
the child in the event of an accident or a
sudden stop. Holding a child in a moving
vehicle does not provide the child with
any means of protection during an acci-
dent, even if the person holding the child
is wearing a seat belt.
!
B230B01NF-AATUsing a Child Restraint SystemFor small children and babies, the use of a child
seat or infant seat is required. This child seat or
infant seat should be of appropriate size for the
child and should be installed in accordance with
the manufacturer's instructions. It is further
required that the seat be placed in the vehicle's
rear seat. Your vehicle is provided with three
child restraint hook holders for installing the
child seat or infant seat.

1FEATURES OF YOUR HYUNDAI30
!For vehicles with adjustable headrests, route
the tether strap under the headrest and
between the headrest posts, otherwise route
the tether strap over the top of the seatback.
3. Connect the tether strap hook to the child
restraint hook holder and tighten to secure
the seat.
WARNING:
Do not mount more than one child restraint
to a single tether or to a child restraint lower
anchorage point. The improper increased
load may cause the anchorage points or
tether anchor to break, causing serious
injury or death.
2. Route the child restraint seat tether strap
over the seatback.
B230C02NF
Rear seat package trayTether Strap Hook
Child Restraint Hook Holders
B230C04A-AATInstalling a Child Restraint Seat with the
"Tether Anchorage" SystemThree child restraint hook holders are located
on the rear seat package tray.To install the child restraint seat1. Open the tether anchor cover on the rear
seat package tray.
B230C01NF
Tether Anchor Cover
Child Restraint
Hook Holder
Front of Vehicle

1
FEATURES OF YOUR HYUNDAI
31
B230D03E-AATSecuring the Child Restraint Seat with
the "ISOFIX" systemSome child seat manufacturers make safety
seats that are labeled as ISOFIX or ISOFIX-
compatible child seats. These seats include two
rigid or webbing mounted attachments that
connect to two ISOFIX anchors at specific
seating positions in your vehicle. This type of
child seat eliminates the need to use seat belts
to attach the child seat for forward-facing child
seats.
ISOFIX anchors have been provided in your
vehicle. The ISOFIX anchors are located in the
left and right outboard rear seating positions.
Their locations are shown in the illustration.
There is no ISOFIX anchor provided for the
center rear seating position.
B230D01NF
The ISOFIX anchors are located between the
seatback and the seat cushion of the rear seat
left and right outboard seating positions.
!
WARNING:
o Do not install a child restraint seat at the
center of the rear seat using the vehicle's
ISOFIX anchors. The ISOFIX anchors are
only provided for the left and right out-
board rear seating positions. Do not
misuse the ISOFIX anchors by attempt-
ing to attach a child safety seat in the
middle of the rear seat position to the
ISOFIX anchors. In a crash, the child seat
ISOFIX attachments may not be strong
enough to secure the child restraint seat
properly in the center of the rear seat and
may break, causing serious injury or
death.
o Do not mount more than one child re-
straint to a single tether or to a child
restraint lower anchorage point. The
improper increased load may cause the
anchorage points or tether anchor to
break, causing serious injury or death.
o Attach the ISOFIX or ISOFIX-compatible
child seat only to the appropriate loca-
tions shown.
o Always follow the installation and use
instructions provided by the manufac-
turer of the child restraint.
B230D02NF-A
ISOFIX AnchorISOFIX Anchor
Position Indicator
B230D03NF-A

1FEATURES OF YOUR HYUNDAI32
B230G03Y-AATInstallation on Rear Seats
To install a child restraint system in the rear
seats, extend the shoulder/lap belt entirely from
its retractor until a "click" is felt. This will engage
the seat belt retractor automatic locking feature,
which allows the seat belt to retract but not
extend. Install the child restraint system, buckle
the seat belt and allow the seat belt to take up
any slack. Make sure that the lap portion of the
belt is tight around the child restraint system and
the shoulder portion of the belt is positioned so
that it cannot interfere with the child's head or
neck. Also, double check to be sure that the
retractor has engaged the Automatic Locking
feature by trying to extend webbing out of the
retractor. If the retractor is in the Automatic
Locking mode, the belt will be locked. After
installation of the child restraint system, try to
move it in all directions to be sure the child
restraint system is securely installed. If you need
to tighten the belt, pull more webbing toward the
retractor. When you unbuckle the seat belt and
allow it to retract, the retractor will automatically
revert back to its normal seated passenger
Emergency Locking usage condition.
B230G01NF-A
On outboard rear seats
!
WARNING:
If the child restraint seat is not anchored
properly, the risk of a child being seriously
injured or killed in a collision greatly in-
creases. Follow the child seat manufacturer's instruc-
tions to properly install safety seats with ISOFIX
or ISOFIX-compatible attachments.
Once you have installed the ISOFIX child re-
straint seat, assure that the seat is properly
attached to the ISOFIX and tether anchors.
Also, test the safety seat before you place the
child in it. Tilt the seat from side to side. Also try
to tug the seat forward. Check to see if the
anchors hold the seat in place.
B235G02NF-A
On rear seat center position

1
FEATURES OF YOUR HYUNDAI
33
!
WARNING:
o If the retractor is not in the Automatic
Locking mode, the child restraint sys-
tem can move when your vehicle turns or
stops abruptly.
o Do not install any child restraint system
in the front passenger seat. Should an
accident occur and cause the passenger
side airbag to deploy, it could severely
injure or kill an infant or child seated in
an infant or child seat. Therefore, only
use a child restraint system in the rear
seat of your vehicle.NOTE:o Before installing the child restraint sys-
tem in any seating position, read the
instructions supplied by the child re-
straint system manufacturer.
o If the seat belt does not operate as de-
scribed, have the system checked imme-
diately by your authorized Hyundai dealer.
!
B180B01NF-AATPre-tensioner Seat BeltYour Hyundai vehicle is equipped with driver's
and front passenger's pre-tensioner seat belts.
The purpose of the pre-tensioner is to make
sure that the seat belts fit tightly against the
occupant's body in certain frontal collisions.
The pre-tensioner seat belts can be activated
alone or, where the frontal collision is severe
enough, together with the airbags.
When the vehicle stops suddenly, or if the
occupant tries to lean forward too quickly, the
seat belt retractor will lock into position. In
certain frontal collisions, the pre-tensioner will
activate and pull the seat belt into tighter contact
against the occupant's body. The buckle pre-
HXG229
CAUTION:
Do not put anything near the buckle. Plac-
ing objects near the buckle can adversely
affect the buckle pre-tensioner and may
increase the risk of personal injury in the
event of a collision.
If the system senses excessive seat belt ten-
sion on the driver or passenger's seat belt when
the pre-tensioner activates, the load limiter
inside the pre-tensioner will release some of the
pressure on the affected seat belt.
The seat belt pre-tensioner system consists
mainly of the following components. Their loca-
tions are shown in the illustration: tensioner (which is installed in the buckle) will
also pull the seat belt into the buckle.

1FEATURES OF YOUR HYUNDAI34
!
!
AIR
BAG
1. SRS airbag warning light
2. Retractor pre-tensioner assembly
3. SRS control module
4. Buckle pre-tensioner assembly
B180B01NF
1
23 Driver's airbag
Passenger's
airbag
WARNING:
To obtain maximum benefit from a pre-
tensioner seat belt:
1. The seat belt must be worn correctly.
2. The seat belt must be adjusted to the
correct position.
3. Be sure you and your passengers always
wear seat belts and wear them properly.
NOTE:o Both the driver's and front passenger's
pre-tensioner seat belts will be activated
in certain frontal collisions. The pre-
tensioner seat belts can be activated
alone or, where the frontal collision is
severe enough, together with the
airbags.
The pre-tensioners will not be activated
if the seat belts are not being worn at the
time of the collision.
o 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 com-
partment. These are normal operating
conditions and are not hazardous.
o Although it is harmless, the fine dust
may cause skin irritation and should not
be breathed for prolonged periods. Wash
all exposed skin areas thoroughly after
an accident in which the pre-tensioner
seat belts were activated.
CAUTION:
o Because the sensor that activates the
SRS airbag is connected with the pre-
tensioner seat belt, the SRS airbag warn-
ing light on the instrument panel will
illuminate for approximately 6 seconds
after the ignition key has been turned to
the "ON" position, and then it should
turn off.
o If the pre-tensioner seat belt is not work-
ing properly, this warning light will illu-
minate even if there is no malfunction of
the SRS airbag. If the SRS airbag warning
light does not illuminate when the igni-
tion key is turned to "ON", or if it blinks
for a second and remains illuminated
after illuminating for approximately 6
seconds, or if it illuminates while the
vehicle is being driven, please have an
authorized Hyundai dealer inspect the
pre-tensioner seat belt or SRS airbag
system as soon as possible. 4

1
FEATURES OF YOUR HYUNDAI
35
!
WARNING:
o Pre-tensioners are designed to operate
only one time. After activation, pre-
tensioner seat belts must be replaced.
All seat belts, of any type, should always
be replaced after they have been worn
during a collision.
o The pre-tensioner seat belt assembly
mechanisms become hot during activa-
tion. Do not touch the pre-tensioner seat
belt assemblies for several minutes after
they have been activated.
o Do not attempt to inspect or replace the
pre-tensioner seat belts yourself. This
must be done by an authorized Hyundai
dealer.
o Do not strike the pre-tensioner seat belt
assemblies.
o Do not attempt to service or repair the
pre-tensioner seat belt system in any
manner.
o Improper handling of the pre-tensioner
seat belt assemblies, and failure to heed
the warnings not to strike, modify, in-
spect, replace, service or repair the pre-
tensioner seat belt assemblies may lead
to improper operation or inadvertent
activation and serious injury.
o Always wear the seat belts when driving
or riding in a motor vehicle.

1FEATURES OF YOUR HYUNDAI36
B240D01NF-AATADVANCED SUPPLEMENTAL RESTRAINT (AIRBAG) SYSTEM (SRS)
1. Driver's front airbag
2. Passenger's front airbag
3. Side impact airbag
4. Curtain airbag
HNF2052

1
FEATURES OF YOUR HYUNDAI
37
B240A01NF
The SRS uses sensors to gather information
about the driver's and front passenger's seat
position, the driver's and front passenger's seat
belt usage and impact severity.
The driver's and front passenger's seat track
position sensors, which are installed on the seat
track, determine if the seats are fore or aft of a
reference position. The seat belt buckle sen-
sors determine if the driver and front passenger'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, how close the passenger's seat is to the
instrument panel, whether or not the seat belts
are fastened, and how severe the impact is.
The advanced SRS offers the ability to control
the airbag inflation with two levels. A first stage
level is provided for moderate-severity impacts.
A second stage level is provided for more
severe impacts.
According to the impact severity, seating posi-
tion and seat belt usage, the SRSCM(SRS
Control Module) controls the airbag inflation.
Failure to properly wear seat belts can increase
the risk or severity of injury in an accident.
CAUTION:
If a seat track position sensor or an occu-
pant classification system is not working
properly, the SRS airbag warning light on
the instrument panel will illuminate be-
cause the SRS airbag warning light is con-
nected with the seat track position sensor
and the occupant classification system. If
the SRS airbag warning light does not illu-
minate when the ignition key is turned to
the "ON" position, remains illuminated af-
ter approximately 6 seconds when the igni-
tion key 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 airbag system as
soon as possible.
!
AIR
BAG
Additionally, your Hyundai is equipped with an
occupant classification system in the front
passenger's seat. The occupant classification
system detects the presence of a passenger in
the front passenger's seat and will turn off the
front passenger's airbag under certain condi-
tions. For more detail, see "Occupant Classifi-
cation System" later in this section.
B240A01NF-AATDriver's and Passenger's Front AirbagYour Hyundai is equipped with an advanced
Supplemental Restraint (Airbag) System. The
indications of the system's presence are the
letters "SRS AIRBAG" embossed on the airbag
pad cover in the steering wheel and the
passenger's side front panel pad above the
glove box.
The Hyundai SRS consists of airbags 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 passenger with additional protection than
that offered by the seat belt system alone in
case of a frontal impact of sufficient severity.Driver's Front Airbag