2004 Hyundai Sonata ECU

1- 4 FEATURES OF YOUR HYUNDAI
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B030C01Y-AATILLUMINATED IGNITION SWITCH
(If installed)B040A01A-AATDOOR LOCKSB040B01A-AATLocking and unlocking front doors with a
key
Whenever a door is opened, the ignition switch
will be illuminated for your convenience, pro-
vided the ignition switch is not in the "ON"
position.
The light will go off approximately 10 seconds
after closing the door or when the ignition switch
is turned on.
B030C01L
o The door can be locked or unlocked with a
key.
o Lock the door by turning the key toward the
front of the vehicle and unlock it by turning the
key toward the rear.
NOTE:The driver's door can be unlocked by turn-
ing the key once toward the rear. If you wish
to unlock all doors, turn the key again
toward the rear within 4 seconds.
B040B01Y
LOCKUNLOCK
WARNING:o Unlocked doors can be dangerous. Be-
fore you drive away (especially if there
are children in the car), be sure that all the
doors are securely closed and locked so
that the doors cannot be opened from
the inside. This helps assure that doors
will not be opened accidentally. Also,
when combined with the proper use of
seat belts, locking the doors helps keep
occupants from being ejected from the
car in case of an accident.
o Before opening the door, always look for
and avoid oncoming traffic.

FEATURES OF YOUR HYUNDAI 1- 13
WARNING:o Never attempt to adjust the seat while
the vehicle is moving. This could result
in loss of control, and an accident caus-
ing death, serious injury, or property
damage.
o Do not sit or lean unnecessarily close to
the airbag to get better protection dur-
ing its deployment in case of an acci-
dent.
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B090A01Y-AATPOWER DRIVER'S SEAT (If installed)The driver's seat can be adjusted appropriately
by using the control knob on the left side of the
seat. Before driving, adjust the seat to the
proper position so as to easily control the
steering wheel, pedals and switches on the
instrument panel.
CAUTION:Do not operate two knobs at the same time.
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B090B01Y-AATAdjusting Seat Forward and Rearward
Pull the control knob forward or backward to
move the seat forward or backward to the
desired position. Release the knob and then the
seat will remain at that position.
1. Seat Back Reclining Control Knob
2. Seat Cushion Forward, Rearward and Height
Adjusting Control Knob
WARNING:To ensure the seat is locked securely, at-
tempt to move the seat forward or rearward
without using the control knob.
B090C01Y-AATSeat Cushion Height Adjustment
Move the front portion of the control knob up or
down to raise or lower the front part of the seat
cushion. Move the rear portion of the control
knob up or down to raise or lower the rear part
of the seat cushion.
HEF-180
HEF-182
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2

1- 16 FEATURES OF YOUR HYUNDAI
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B150C02A-AATLarger Children
Children who are too large for child restraint
systems should occupy the rear seat and use
the available lap/shoulder belts. The lap portion
should be fastened snug on the hips and as low
as possible. Check belt fit periodically. A child's
squirming could put the belt out of position.
Children are afforded the most safety in the
event of an accident when they are restrained
by a proper restraint system in the rear seat. If
a larger child (over age 13) must be seated in
the front seat, the child should be securely
restrained by the available lap/shoulder belt and
the seat should be placed in the rearmost
position. Children under the age of 13 should be
restrained securely in the rear seat. NEVER
place a rear facing child seat in the front seat of
a vehicle.
B150D01A-AATPregnant Women
The use of a seat belt is recommended for
pregnant women to lessen the chance of injury
in an accident. When a seat belt is used, the lap
belt portion should be placed as low and snugly
as possible on the hips, not across the abdo-
men. For specific recommendations, consult a
physician.
B150A02A-AATSEAT BELT PRECAUTIONSB150B03Y-AATInfant or Small ChildAll 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.
Information about the use of these restraints
begins on page 1-22.
WARNING:Every person in your vehicle needs to be
properly restrained at all times, including
infants and children. In a collision, an unre-
strained child can become a "missile" in-
side the car. The force required to hold a
child on your lap could be so great that you
could not hold the child. Any child riding in
the vehicle should always be in a proper
restraint in the rear seat of the vehicle.
NOTE:Small children are best protected from in-
jury in an accident when properly restrained
in the rear seat by a child restraint system
that meets the requirements of the Federal
Motor Vehicle Safety Standards. Before
buying any child restraint system, make
sure that it has a label certifying that it
meets Motor Vehicle Safety Standard 213.
The restraint must be appropriate for your
child's height and weight. Check the label
on the child restraint for this information.
See page 1-22.
WARNING:All occupants of the vehicle must wear their
seat belts at all times. Note that this vehicle
is equipped with a Supplemental Restraint
(Airbag) System as discussed beginning
on page 1-28. The seat belts must be used
in conjunction with the supplemental
airbag system. State laws require that some
or all occupants of the vehicle use seat
belts. The possibility of increased injury or
severity of injury in an accident will be
increased if this elementary safety precau-
tion is not observed.
In addition, follow the other instructions
provided in this section.

FEATURES OF YOUR HYUNDAI 1- 19
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B190A01Y-AAT
SEAT BELTS-Front Passenger and Rear
Seat 3-Point System with Combination
Locking Retractor
To Fasten Your Belt
Combination retractor type seat belts are in-
stalled in the rear seat positions to help accom-
modate the installation of child restraint sys-
tems. Although a combination retractor is also
installed in the front passenger seat position,
Hyundai strongly recommends that children
always be seated in the rear seat. NEVER place
any infant restraint system in the front seat of the
vehicle.
This type of seat belt combines the features of
both an emergency locking retractor seat belt
and an automatic locking retractor seat belt. To
fasten your seat belt, pull it out of the retractor
and insert the metal tab into the buckle. There
will be an audible "click" when the tab locks into
the buckle. When not securing a child restraint,
the seat belt operates in the same way as the
driver's seat belt (Emergency Locking Retrac-tor Type). It automatically adjusts to the proper
length only after the lap belt portion of the seat
belt is adjusted manually so that it fits snugly
around your hips. When the seat belt is fully
extended from the retractor to allow the instal-
lation of a child restraint system, the seat belt
operation changes to allow the belt to retract, but
not to extend. (Automatic Locking Retractor
Type). See page 1-24.
NOTE:Although the combination retractor pro-
vides the same level of protection for seated
passengers in either emergency or auto-
matic locking modes, it is recommended
that seated passengers use the emergency
locking feature for improved convenience.
The automatic locking function is intended
to facilitate child restraint installation. To
convert from the automatic locking feature
to the emergency locking operation mode,
allow the unbuckled seat belt to fully re-
tract.
WARNING:o For maximum restraint system protec-
tion, the seat belts must always be used
whenever the car is moving.
o Seat belts are most effective when
seatbacks are in the upright position.
o Children must always be seatbelted in
the rear seats. Never allow children to
ride in the front passanger seat.
o The shoulder belt should be positioned
midway over the shoulder nearest the
door for the most effective protection.
Never wear the seat belt under the arm
nearest the door. Wearing the belt under
the arm nearest the door could cause
serious or fatal injuries in an accident.
o Avoid wearing twisted seat belts. A
twisted belt can't do its job as well. In a
collision, it could even cut into you. Be
sure the belt is straight and not twisted.
o Be careful not to damage the belt web-
bing or hardware. If the belt webbing or
hardware is damaged, replace it.
NOTE:Seat belt reminder light comes and stays on
until the seat belt is fastened when the
ignition key is turned "ON" or "START".
And, the warning chime will also sound for
about 6 seconds.

1- 22 FEATURES OF YOUR HYUNDAI
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B230A02Y-AATCHILD RESTRAINT SYSTEM
Children 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 should use one of the seat belts pro-
vided.
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
and seat belts, and fits your child. Follow all the
instructions provided by the manufacturer when
installing the child restraint system.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 Since a safety belt or child restraint sys-
tem can become very hot if it is left in a
closed vehicle, be sure and 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 still sit in the rear seat
and be restrained with the available lap/
shoulder belts. Never allow children to
ride in the front passenger seat.
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 to the
center of the vehicle may help provide a
good shoulder belt fit. The lap belt por-tion 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, we recommend the use of an ap-
proved 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 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.
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.

1- 24 FEATURES OF YOUR HYUNDAI
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B230G03Y-AATInstallation on Rear Seats
WARNING:
If the tether strap is clipped incorrectly, the
child restraint seat may not be restrained
properly in the event of a collision.
6. Tighten the tether strap to secure the seat.
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 can not 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 childrestraint 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 condi-
tion.
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.
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.
B235G01Y

FEATURES OF YOUR HYUNDAI 1- 25
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B230D03E-AATSecuring the child Restraint seat with
the "ISOFIX" system
WARNING:
o Do not install a child safety 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 sefety 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. Some 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.The ISOFIX anchors are located between the
seatback and the seat cushion of the rear seat
left and right outboard seating positions.
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.
B230F01EB230D03Y
ISOFIX AnchorISOFIX Anchor
lndicator Button

FEATURES OF YOUR HYUNDAI 1- 55
Operating HomeLink
Simply press the appropriate HomeLink button
to activate the trained product (garage door,
security system, entry door lock, estate gate,
lighting, etc.). The original handheld transmit-
ters may also be used at any time.
Erasing Programmed Buttons
To erase the three HomeLink buttons, press
and hold the two outside buttons until the indica-
tor light begins to flash (after 20 seconds).
Release both buttons.
Individual buttons cannot be erased, but can be
reprogrammed.
Reprogramming a Single HomeLink
Button
To program a device to HomeLink using a
HomeLink button previously trained, follow these
steps:
1. Press and hold the desired HomeLink but-
ton. Do not release until step 4 has been
completed.
2. When the indicator light begins to flash slowly
(after 20 seconds), hold the handheld trans-
mitter 1 to 3 inches away from the bottom of
the mirror.
3. Press and hold the transmitter button (or, if
necessary, press and "cycle," as described
in the '"Gate Operator & Canadian Program-
ming" portion of this text).
4. The HomeLink indicator light will flash slowly
at first, then rapidly, indicating successful
programming. Release both buttons.
B520C02L
Flashing
Gate Operator Programming & Cana-
dian Programming
During programming, your handheld transmit-
ter may automatically stop transmitting.
Continue to press and hold the HomeLink button
while you press and repress ("cycle") your
handheld transmitter every two seconds until
the frequency signal has been learned. The
indicator light will flash slowly at first and then
rapidly upon successful programming.
Accessories
For more information on HomeLink and
HomeLink-compatible products, or to purchase
HomeLink accessories, call 1-800-355-3515
or visit www.homeink.com.