ECU Hyundai Sonata

1FEATURES OF YOUR HYUNDAI2
!
B010A01NF-A
FUEL RECOMMENDATIONS
CAUTION:
Your Hyundai's New Vehicle Limited War-
ranty may not cover damage to the fuel
system and any performance problems
that are caused by the use of fuels con-
taining methanol or fuels containing
MTBE (Methyl Tertiary Butyl Ether) over
15.0% vol. (Oxygen Content 2.7% weight.)
B010B01A-AATWhat About Gasohol?Gasohol (a mixture of 90% unleaded
gasoline and 10% ethanol or grain alcohol)
may be used in your Hyundai. However, if
your engine develops driveability
problems, the use of 100% unleaded
gasoline is recommended. Fuels with
unspecified quantities of alcohol, or
alcohols other than ethanol, should not be
used.
B010A02NF-AATUse Unleaded GasolineUnleaded gasoline with a Pump Octane
Rating of 87 (Research Octane Number
91) or higher must be used in your
Hyundai.
B010C01A-AATUse of MTBEHyundai recommends that fuels
containing MTBE (Methyl Tertiary Butyl
Ether) over 15.0% vol. (Oxygen Content
2.7% weight) should not be used in your
Hyundai.
Fuel containing MTBE over 15.0% vol.
(Oxygen Content 2.7% weight) may reduce
vehicle performance and produce vapor
lock or hard starting.
B010D01A-AATDo Not Use MethanolFuels containing methanol (wood alcohol)
should not be used in your Hyundai. This
type of fuel can reduce vehicle
performance and damage components of
the fuel system.
!
UNLEADED
FUEL ONLY
WARNING:
o Do not "top off" after the nozzle auto-
matically shuts off when refueling.
o Tighten the cap until it clicks, otherwise
the "
" light will illuminate.
o Always check that the fuel cap is
installed securely to prevent fuel
spillage in the event of an accident.

1FEATURES OF YOUR HYUNDAI4
DOOR LOCKS!
B040A01A-AAT B030C01JM-AAT
ILLUMINATED IGNITION SWITCHWhenever either front door is opened, the
ignition switch will be illuminated for your
convenience, provided 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.
WARNING:
o Unlocked doors can be dangerous.
Before 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
ensure that the 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.
B030B01NF-GATRecord Your Key NumberA code number is attached on the number
tag that came with the keys to your Hyundai.
This key number tag should not be left with
the keys but kept in a safe place, not in the
vehicle. The key number should also be
recorded in a place where it can be found
in an emergency.
If you need additional keys, or if you should
lose your keys, your authorized Hyundai
dealer can make new keys if you can
supply the key number.
B030B01NF-A
B030C01E

1FEATURES OF YOUR HYUNDAI14
!
B080B03A-AATAdjusting Seat Forward and
RearwardTo move the seat toward the front or rear,
pull the lock release lever upward. This will
release the seat on its track so you can
move it forward or rearward to the desired
position. When you find the position you
want, release the lever and slide the seat
forward or rearward on its track until it locks
into the desired position and cannot be
moved further.
WARNING:
After adjusting the seat, always check
that it is securely locked into place by
attempting to move the seat forward or
rearward without using the lock release
lever. Sudden or unexpected movement
of the driver's seat could cause you to
lose control of the vehicle resulting in an
accident.
SEATSB080A02A-AATADJUSTABLE FRONT SEATS
!
WARNING:
o Never adjust the driver’s seat while
the vehicle is moving. Any sudden or
unexpected movement of the seat
could cause you to lose control of the
vehicle resulting in an accident. Only
adjust the driver’s seat when the
vehicle is stationary.
o Do not sit or lean unnecessarily close
to the airbag. Position the seat so that
you can sit as far back as possible
from the airbag and still comfortably
reach all controls.
ONF038002

1
FEATURES OF YOUR HYUNDAI
21
SEAT BELTSB150B04Y-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 1-26.
!
B150A02S-AATSEAT BELT PRECAUTIONS
WARNING:All occupants of the vehicle must wear
their seat belts at all times. Seat belts
and child restraints reduce the risk of
serious or fatal injuries for all occupants
in the event of a collision or sudden stop.
Without a seat belt, occupants could be
shifted too close to a deploying airbag,
strike the interior structure or be thrown
from the vehicle. Properly worn seat
belts greatly reduce these hazards. Even
with advanced airbags, unbelted
occupants can be severely injured by a
deploying airbag. Always follow the
precautions about seat belts, airbags
and occupant safety contained in this
manual.
!
WARNING:
Every person in your vehicle needs to be
properly restrained at all times, including
infants and children. Never hold a child
in your arms or lap when riding in a
vehicle. The violent forces created
during a crash will tear the child from
your arms and throw the child against
the interior. Always use a child restraint
appropriate for your child's height and
weight, see page 1-26.NOTE:Small children are best protected from
injury in an accident when properly re-
strained 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
Federal 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 information beginning
on page 1-28.
B150C02A-AATLarger ChildrenChildren who are too large for child restraint
systems should always 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 child under the age of 13 in the front
seat. NEVER place a rear facing child seat
in the front seat of a vehicle.

1FEATURES OF YOUR HYUNDAI24
B180A02NF-AATSEAT BELT-Driver's 3-Point System
with Emergency Locking Retractor
To Fasten Your BeltTo 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.
The seat belt automatically adjusts to the
proper length only after the lap belt portion
is adjusted manually so that it fits snugly
around your hips. If you lean forward in a
slow, easy motion, the belt will extend and
let you move around. If there is a sudden
stop or impact, however, the belt will lock
into position. It will also lock if you try to lean
forward too quickly.
B180A01NF
NOTE:o If you are not able to pull out the seat
belt from the retractor, firmly pull the
belt out and release it. Then you will be
able to pull the belt out smoothly.
o If the driver's seat belt is not fastened
when the ignition key is turned from
the "OFF" position to the "ON" or
"START" position, the seat belt warn-
ing light will blink and the warning
chime will sound for approximately
six seconds to remind the driver to
fasten the driver's seat belt.
!
Release the button to lock the anchor into
position. Try sliding the height adjuster to
make sure that it has locked into position.
WARNING:
o Verify the shoulder belt anchor is
locked into position at the appropriate
height. Never position the shoulder
belt across your neck or face.
Improperly positioned seat belts can
cause serious injuries in an accident.
o Failure to replace seat belts after an
accident could leave you with
damaged seat belts that will not
provide protection in the event of
another collision leading to personal
injury or death. Replace your seat
belts after being in an accident as
soon as possible.
!
WARNING:
o Adjust the shoulder belt height when
you sit well back in the seat.
o When adjusting the shoulder belt
height, grip the height adjuster button
securely and slide the height adjuster
up or down.

1
FEATURES OF YOUR HYUNDAI
25
B190A02NF-AATSEAT BELTS-Front Passenger and
Rear Seat 3-Point System with
Combination Locking Retractor
To Fasten Your BeltCombination retractor type seat belts are
installed in the rear seat positions to help
accommodate the installation of child
restraint systems. 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 Retractor
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 installation 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 1-33.
NOTE:o Although the combination retractor
provides the same level of protection
for seated passengers in either
emergency or automatic 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
retract.
o The front passenger's seat belt
warning light on the center fascia
panel blinks until the front passenger's
seat belt is fastened to remind the
front passenger to fasten the front
passenger's seat belt, when the
ignition key is turned from the "OFF"
position to "the "ON" or "START"
position.
WARNING:
o For maximum restraint system pro-
tection, 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 age 12 and younger must
always be properly restrained in the
rear seat. Never allow children to ride
in the front passenger seat. If a child
over 13 must be seated in the front
seat, he/she must be properly belted
and the seat should be moved as far
back as possible.
o Never wear the shoulder belt under
your arm or behind your back. An
improperly positioned shoulder belt
can cause serious injuries in a crash.
The shoulder belt should be positioned
midway over your shoulder across
your collarbone.
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 webbing 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.
!

1FEATURES OF YOUR HYUNDAI26
CHILD RESTRAINT SYSTEMB230A01NF-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 accident statistics
provided by the National Highway 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). Child restraint systems are
designed to be secured in vehicle seats by
lap belts or the lap belt portion of a lap/
shoulder belt, or by a tether anchor and/or
ISOFIX anchors (if installed).
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 manufacturer
when installing the child restraint system. The seat belt is released by pressing the
release button in the locking buckle. When
it is released, the belt should automatically
draw back into the retractor.
If this does not happen, check the belt to be
sure it is not twisted, then try again.
B210A01A-AATTo Release the Seat Belt
B210A01NF
WARNING:
You should place the lap belt portion as
low as possible and snugly across your
hips, not on your waist. If the lap belt is
located too high on your waist, it may
increase the chance of injury in the event
of a collision. Both arms should not be
under or over the belt. Rather, one should
be over and the other under, as shown in
the illustration.
Never wear the seat belt under the arm
nearest the door.
!
B200A01A-AATAdjusting Your Seat Belt
B200A01NF

1
FEATURES OF YOUR HYUNDAI
27
!
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 outside 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 may be seriously injured or
killed by an inflating airbag. All
children, even those too large for child
restraints, must ride in the rear seat.
!
WARNING:
To reduce the chance or serious or fatal
injuries:
o Children of all ages are safer when re-
strained in the rear seat. A child riding in
the front passenger seat can be force-
fully struck by an inflating airbag result-
ing in serious or fatal injuries.
o Always follow the instructions for instal-
lation and use of the child restraint maker.
o Always make sure the child seat is se-
cured properly in the car and your child
is securely restrained in the child seat.
o Never hold a child in your arms or lap
when riding in a vehicle. The violent
forces created during a crash will tear
the child from your arms and throw the
child against the car’s interior.
o Never put a seat belt over yourself and
a child. During a crash, the belt could
press deep into the child causing seri-
ous internal injuries.
o Never leave children unattended in a
vehicle – not even for a short time. The
car can heat up very quickly, resulting in
serious injuries to children inside. Even
very young children may inadvertently
cause the vehicle to move, entangle
themselves in the windows, or lock them-
selves or others inside the vehicle.o Never allow two children, or any two
persons, to use the same seat belt.
o Children often squirm and reposition
themselves improperly. Never let a
child ride with the shoulder belt under
their arm or behind their back. Always
properly position and secure children
in rear seat.
o Never allow a child to stand-up or
kneel on the seat or floor of a moving
vehicle. During a collision or sudden
stop, the child can be violently thrown
against the vehicle's interior, resulting
in serious injury.
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 Seat belts can become very hot, es-
pecially when the car is parked in
direct sunlight. Always check seat
belt buckles before fastening them
over a child.
o Always store or secure a child seat,
even when it is not in use. During a
collision or sudden stop, the child seat
could be thrown inside the vehicle.
!
WARNING:

1
FEATURES OF YOUR HYUNDAI
29
!For vehicles with adjustable headrests,
route the tether strap under the head-
rest 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:
o A child can be seriously injured or
killed in a collision if the child restraint
is not properly anchored. Always
follow the child seat manufacturer’s
instructions for installation and use.
o Never mount more than one child re-
straint to a single tether or to a single
lower anchorage point. The increased
load caused by multiple seats may
cause the tethers or anchorage points
to break, causing serious injury or
death.
B230D06E-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.
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
!
WARNING:
o A child can be seriously injured or
killed in a collision if the child restraint
is not properly anchored. Always
follow the child seat manufacturer’s
instructions for installation and use.
o Never install a child restraint using
the ISOFIX anchors at the center
position of the rear seat. In a crash,
the ISOFIX anchors may break if a car
seat is improperly placed in the center
position resulting in serious or fatal
injuries. Only place a ISOFIX or ISOFIX-
compatible child seat in the left or
right out-board rear seating positions
(as shown) to the appropriate ISOFIX
anchors provided.
o Never mount more than one child
restraint to a single tether or to a
single lower anchorage point. The
increased load caused by multiple
seats may cause the tethers or
anchorage points to break, causing
serious injury or death.

1
FEATURES OF YOUR HYUNDAI
31
B230G04Y-AATChild Restraint System Installation
on Rear Seats
B230G01NF-B
On outboard rear seats
B235G02NF
On rear seat center positionTo 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.
!
WARNING:
o If the retractor is not in the Automatic
Locking mode, the child restraint can
move when your vehicle turns or stops
suddenly. A child can be seriously
injured or killed if the child restraint is
not properly anchored to the car,
including setting the retractor to the
Automatic Locking mode.
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
system in any seating position, read
the instructions supplied by the child
restraint system manufacturer.
o If the seat belt does not operate as
described, have the system checked
immediately by your authorized
Hyundai dealer.