ECU Hyundai Sonata 2018 Owner's Manual

F7
Introduction
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NOTICE indicates a situation
which, if not avoided, could result
in vehicle damage. Your new vehicle is designed to
obtain maximum performance with
UNLEADED FUEL, as well as mini-
mize exhaust emissions and spark
plug fouling.
Your new vehicle is designed to use
only unleaded fuel having an octane
number ((R+M)/2) of 87 (Research
Octane Number 91) or higher. (Do not
use methanol blended fuels)
To prevent damage to the engine
and engine components, never
add any fuel system cleaning
agents to the fuel tank other than
what has been specified.
Consult an authorized HYUNDAI
dealer for additional information.
Gasoline containing alcohol or
methanol
Gasohol, a mixture of gasoline and
ethanol (also known as grain alco-
hol) are being marketed along with or
instead of leaded or unleaded gaso-
line.
Do not use gasohol containing more
than 10% ethanol, and do not use
gasoline or gasohol containing any
methanol. Either of these fuels may
cause drivability problems and dam-
age to the fuel system, engine con-
trol system and emission control sys-
tem.
Discontinue using gasohol of any
kind if drivability problems occur.
NOTICE
NOTICE
CAUTION indicates a hazardous
situation which, if not avoided,
could result in minor or moder-
ate injury.
CAUTION
Do not "top off" after the noz-
zle automatically shuts off
when refueling.
Always check that the fuel cap
is installed securely to pre-
vent fuel spillage in the event
of an accident.
WARNING

2-14
Safety system of your vehicle
Armrest
The armrest is located in the center
of the rear seat. Pull the armrest
down by using the strap from the
seatback to use it.
You will find cup holders on the cen-
ter armrest.
Do not place objects in the rear
seats, since they cannot be
properly secured and may hit
vehicle occupants in a collision
causing serious injury or death.
WARNING
Make sure the engine is off, the
shift lever is in P (Park), and the
parking brake is securely applied
whenever loading or unloading
cargo. Failure to take these steps
may allow the vehicle to move if
the shift lever is inadvertently
moved to another position.
WARNING
When returning the rear seat-
back from a folded to an upright
position, hold the seatback and
return it slowly. Ensure that the
seatback is completely locked
into its upright position by
pushing on the top of the seat-
back. In an accident or sudden
stop, the unlocked seatback
could allow cargo to move for-
ward with great force and enter
the passenger compartment,
which could result in serious
injury or death.
WARNING
OLF034065

2-15
Safety system of your vehicle
2
Head Restraints
The vehicle’s front and rear seats
have adjustable head restraints. The
head restraints provide comfort for
passengers, but more importantly
they are designed to help protect
passengers from whiplash and other
neck and spinal injuries during an
accident, especially in a rear impact
collision.
Be careful when loading
cargo through the rear pas-
senger seats to prevent dam-
age to the vehicle interior.
When cargo is loaded through
the rear passenger seats,
ensure the cargo is properly
secured to prevent it from
moving while driving.
Unsecured cargo in the pas-
senger compartment can
cause damage to the vehicle
or injury to it’s occupants.
CAUTION
To reduce the risk of serious
injury or death in an accident,
take the following precautions
when adjusting your head
restraints:
Always properly adjust the
head restraints for all passen-
gers BEFORE starting the
vehicle.
NEVER let anyone ride in a
seat with the head restraints
removed.(Continued)
(Continued)

Adjust the head restraints so
the middle of the head
restraints is at the same height
as the height of the top of the
eyes.
NEVER adjust the head
restraint position of the dri-
ver’s seat when the vehicle is
in motion.
Adjust the head restraint as
close to the passenger's head
as possible. Do not use a seat
cushion that holds the body
away from the seatback.
Make sure the head restraint
locks into position after adjust-
ing it.
WARNING
OLF034072N

2-22
Safety system of your vehicle
This section describes how to use the
seat belts properly. It also describes
some of the things not to do when
using seat belts.
Seat Belt Safety Precautions
Always fasten your seat belt and
make sure all passengers have fas-
tened their seat belts before starting
any trip. Air bags are designed to
supplement the seat belt as an addi-
tional safety device, but they are not a
substitute. Most states require all
occupants of a vehicle to wear seat
belts.
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Seat belts must be used by ALL
passengers whenever the vehi-
cle is moving. Take the following
precautions when adjusting and
wearing seat belts:
ALWAYS properly restrain
children under age 13 in the
rear seats.
(Continued)
WARNING
(Continued)
NEVER allow children to ride
in the front passenger seat. If
a child age 13 or older must be
seated in the front seat, move
the seat as far back as possi-
ble and properly restrain them
in the seat.
NEVER allow an infant or child
to be carried on an occupant’s
lap.
NEVER ride with the seatback
reclined when the vehicle is
moving.
Do not allow children to share
a seat or seat belt.
Do not wear the shoulder belt
under your arm or behind your
back.
Always wear both the shoul-
der portion and lap portion of
the lap/shoulder belt.
Do not use the seat belt if it is
twisted. A twisted seat belt
will not protect you properly
in an accident.(Continued)
(Continued)
Do not use a seat belt if the
webbing or hardware is dam-
aged.
Do not latch the seat belt into
the buckles of other seats.
NEVER unfasten the seat belt
while driving. This may cause
loss of vehicle control result-
ing in an accident.
Make sure there is nothing in
the buckle interfering with the
seat belt latch mechanism.
This may prevent the seat belt
from fastening securely.
No modifications or additions
should be made by the user
which will either prevent the
seat belt adjusting devices
from operating to remove
slack, or prevent the seat belt
assembly from being adjusted
to remove slack.

2-26
Safety system of your vehicle
Rear Seat Belt – Passenger’s 3-point system with convertiblelocking retractor
This type of seat belt combines the
features of both an emergency locking
retractor seat belt and an automatic
locking retractor seat belt. Convertible
retractor type seat belts are installed in
the rear seat positions to help accom-
modate the installation of child
restraint systems. Although a convert-
ible retractor is also installed in the
front passenger seat position, NEVER
place any infant/child restraint system
in the front seat of the vehicle.
To fasten your seat belt:
Pull the seat belt out of the retractor
and insert the metal tab into the buck-
le. 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 automati-
cally adjusts to the proper length only
after the lap belt portion of the seat
belt is adjusted manually so that it fits
snugly across your hips.
(Continued)
Position one arm under the
shoulder belt and the other over
the belt, as shown in the illus-
tration.
Always position the shoulder
belt anchor into the locked
position at the appropriate
height.
Never position the shoulder
belt across your neck or face.
OLMB033025
Improperly positioned seat belts
may increase the risk of serious
injury in an accident. Take the fol-
lowing precautions when adjust-
ing the seat belt:
Position the lap portion of the
seat belt as low as possible
across your hips, not on your
waist, so that it fits snugly.
(Continued)
WARNING

2-31
Safety system of your vehicle
2
Small children are best protected
from injury in an accident when prop-
erly 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 certify-
ing 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. Refer to the "Child
Restraint Systems" section in this
chapter.Larger children
Children under age 13 and who are
too large for a booster seat must
always occupy the rear seat and use
the available lap/shoulder belts. A
seat belt should lie across the upper
thighs and be snug across the shoul-
der and chest to restrain the child
safely. Check belt fit periodically.
Children are afforded the most safe-
ty in the event of an accident when
they are restrained by a proper
restraint system and/or seat belts in
the rear seat. Always have the
LATCH system inspected by your
authorized HYUNDAI dealer after an
accident. An accident can damage
the LATCH system and may not
properly secure the child restraint.
If a larger child over age 13 must be
seated in the front seat, the child
must be securely restrained by the
available lap/shoulder belt and the
seat should be placed in the rear-
most position.
ALWAYS properly restrain
infants and small children in a
child restraint appropriate for
the child's height and weight.
To reduce the risk of serious
injury or death to a child and
other passengers, NEVER hold
a child in your lap or arms when
the vehicle is moving. The vio-
lent forces created during an
accident will tear the child from
your arms and throw the child
against the interior of the vehi-
cle.WARNING

2-34
Safety system of your vehicle
Children Always in the RearChildren under age 13 must always
ride in the rear seats and must
always be properly restrained to min-
imize the risk of injury in an accident,
sudden stop or sudden maneuver.
According to accident statistics, chil-
dren are safer when properly
restrained in the rear seats than in
the front seat.Even with air bags,
children can be seriously injured
or killed. Children too large for a
child restraint must use the seat belts
provided.
All 50 states have child restraint laws
which require children to travel in
approved child restraint devices. The
laws governing the age or height/
weight restrictions at which seat
belts can be used instead of child
restraints differs among states, so
you should be aware of the specific
requirements in your state, and
where you are travelling. Child restraint systems must be
properly placed and installed in the
rear seat. You must use a commer-
cially available child restraint system
that meets the requirements of the
Federal Motor Vehicle Safety
Standards (FMVSS).
Child restraint systems are generally
designed to be secured in a vehicle
seat by lap belt portion of a
lap/shoulder belt, or by a LATCH sys-
tem in the rear seats of the vehicle.
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Always properly restrain chil-
dren in the rear seats of the
vehicle.
Children of all ages are safer
when restrained in the rear seat.
A child riding in the front pas-
senger seat can be forcefully
struck by an inflating air bag
resulting in SERIOUS INJURY
or DEATH.
WARNING

2-35
Safety system of your vehicle
2
Child restraint system (CRS)
Infants and younger children must be
restrained in an appropriate rear-fac-
ing or forward-facing CRS that has
first been properly secured to the
rear seat of the vehicle. Read and
comply with the instructions for
installation and use provided by the
manufacturer of the child restraint.
Selecting a Child Restraint
System (CRS)
When selecting a CRS for your child,
always:
Make sure the CRS has a labelcertifying that it meets applicable
Federal Motor Vehicle Safety
Standards (FMVSS 213).
Select a child restraint based on your child's height and weight. The
required label or the instructions
for use typically provide this infor-
mation.
Select a child restraint that fits the vehicle seating position where it
will be used.
Read and comply with the warn- ings and instructions for installation
and use provided with the child
restraint system.
(Continued)Always follow the child
restraint system manufactur-
er's instructions for installa-
tion and use.
Always properly restrain your
child in the child restraint.
If the vehicle head restraint
prevents proper installation of
a child seat (as described in
the child restraint system
manual), the head restraint of
the respective seating posi-
tion shall be readjusted or
entirely removed.
Do not use an infant carrier or
a child safety seat that
"hooks" over a seatback, it
may not provide adequate
protection in an accident.
After an accident, have a
HYUNDAI dealer check the
child restraint system, seat
belts, tether anchors and
lower anchors.
An improperly secured child
restraint can increase the risk
of SERIOUS INJURY or DEATH
in an accident. Always take the
following precautions when
using a child restraint system:
NEVER install a child or infant
restraint in the front passen-
ger's seat.
Always properly secure the
child restraint to a rear seat of
the vehicle.
(Continued)
WARNING

2-38
Safety system of your vehicle
After selecting a proper child seat for
your child, check to make sure it fits
properly in your vehicle. Follow the
instructions provided by the manu-
facturer when installing the child
seat. Note these general steps when
installing the seat to your vehicle:

Properly secure the child restraint
to the vehicle.
All child restraints
must be secured to the vehicle with
the lap part of a lap/shoulder belt or
with the LATCH system.
Make sure the child restraint is
firmly secured. After installing a
child restraint to the vehicle, push
and pull the seat forward and from
side-to-side to verify that it is
securely attached to the seat. A
child restraint secured with a seat
belt should be installed as firmly as
possible. However, some side-to-
side movement can be expected.
Secure the child in the child
restraint. Make sure the child is
properly strapped in the child
restraint according to the manufac-
turer instructions.
Lower Anchors and Tether for Children (LATCH) System
The LATCH system holds a child
restraint during driving and in an
accident. This system is designed to
make installation of the child restraint
easier and reduce the possibility of
improperly installing your child
restraint. The LATCH system uses
anchors in the vehicle and attach-
ments on the child restraint. The
LATCH system eliminates the need
to use seat belts to secure the child
restraint to the rear seats.
Lower anchors are metal bars built
into the vehicle. There are two lower
anchors for each LATCH seating
position that will accommodate a
child restraint with lower attach-
ments.
To use the LATCH system in your
vehicle, you must have a child
restraint with LATCH attachments.
The child seat manufacturer will pro-
vide you with instructions on how to
use the child seat with its attach-
ments for the LATCH lower anchors.
A child restraint in a closed
vehicle can become very hot. To
prevent burns, check the seat-
ing surface and buckles before
placing your child in the child
restraint.
CAUTION

2-40
Safety system of your vehicle
Securing a child restraint withthe LATCH anchors system
To install a LATCH-compatible child
restraint in either of the rear outboard
seating positions:
1. Move the seat belt buckle away
from the lower anchors.
2. Move any other objects away from the anchors that could prevent a
secure connection between the
child restraint and the lower
anchors.
3. Place the child restraint on the vehicle seat, then attach the seat
to the lower anchors according to
the instructions provided by the
child restraint manufacturer.
4. Follow the child restraint instruc- tions for properly adjusting and
tightening the lower attachments
on the child restraint to the lower
anchors. The recommended weight for the
LATCH system is under 65 lb (30
kg).
How to calculate the child
restraint weight :
Child restraint weight =
65 lb (30 kg) - Child weight
NOTICE
Take the following precautions
when using the LATCH system:
Read and follow all installation
instructions provided with
your child restraint system.
To prevent the child from
reaching and taking hold of
unretracted seat belts, buckle
all unused rear seat belts and
retract the seat belt webbing
behind the child. Children can
be strangled if a shoulder belt
becomes wrapped around
their neck and the seat belt
tightens.
NEVER attach more than one
child restraint to a single
anchor. This could cause the
anchor or attachment to come
loose or break.
Always have the LATCH sys-
tem inspected by your author-
ized HYUNDAI dealer after an
accident. An accident can
damage the LATCH system
and may not properly secure
the child restraint.
WARNING