2018 Hyundai Sonata engine

2-8
Seat belts must be snug against your
hips and chest to work properly.
When the seatback is reclined, the
shoulder belt cannot do its job
because it will not be snug against
your chest. Instead, it will be in front
of you. During an accident, you could
be thrown into the seat belt, causing
neck or other injuries.
The more the seatback is reclined,
the greater chance the passenger’s
hips will slide under the lap belt or
the passenger's neck will strike the
shoulder belt.
Seat cushion height
To change the height of the seat
cushion:
Push down on the lever severaltimes, to lower the seat cushion.
Pull up on the lever several times, to raise the seat cushion.
Power adjustment
The front seat can be adjusted by
using the control switches located on
the outside of the seat cushion. Before
driving, adjust the seat to the proper
position so that you can easily control
the steering wheel, foot pedals and
controls on the instrument panel.
Safety system of your vehicle
OLF034004NNEVER allow children in the
vehicle unattended. The power
seats are operable when the
engine is turned off.
WARNING

2-9
Safety system of your vehicle
2
To prevent damage to the seats:
Always stop adjusting the seatswhen the seat has been adjust-
ed as far forward or rearward as
possible.
Do not adjust the seats longer than necessary when the engine
is turned off. This may result in
unnecessary battery drain.
Do not operate two or more seats at the same time. This may
result in an electrical malfunc-
tion.
Forward and rearward adjustment
To move the seat forward or rearward:
1. Push the control switch forward or rearward.
2. Release the switch once the seat reaches the desired position.
Seatback angle
To recline the seatback:
1. Push the control switch forward orrearward.
2. Release the switch once the seat- back reaches the desired position.
NOTICE
OLF034005NOLF034006N

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

2-20
Safety system of your vehicle
While the engine is running, push
either of the switches to warm the
driver's seat or passenger's seat. During mild weather or under condi-
tions where the operation of the seat
warmer is not needed, keep the
switches in the OFF position.
Each time you push the switch, the
temperature setting of the seat
changes as follows :
The seat warmer defaults to the OFF position whenever the ignition
switch is in the ON position.
Information
With the seat warmer switch in the
ON position, the heating system turns
off or on automatically depending on
seat temperature.
Air ventilation seats (if equipped)
The air ventilation seats are provided
to cool the front seats by blowing air
through small vent holes on the sur-
face of the seat cushions and seat-
backs.
When the operation of the air ventila-
tion seats are not needed, keep the
switches in the OFF position.
i
OFF→ HIGH( )→ MIDDLE( )→ LOW( )
→
OFF → HIGH( ) → LOW( )
→
-Rear
-Front
OLF037020
OLF037084
OLF034028
■Front
■Rear

2-21
Safety system of your vehicle
2
While the engine is running, push the
switch to cool the driver's seat or the
front passenger's seat.
Each time you push the switch, theairflow changes as follows:
The air v entilation seats default to
the OFF position whenever the
ignition switch is turned to the ON
position. To prevent damage to the air ven-
tilation seat system and seats:
Use the air ventilation seats
ONLY when the air conditioning
is on. Using the air ventilation
seats for prolonged periods of
time with the air conditioning off
could cause the air ventilation
seats to malfunction.
Never use a solvent such as paint thinner, benzene, alcohol
or gasoline to clean the seats.
Avoid spilling liquids on the sur- face of the front seats and seat-
backs; this may cause the air
vent holes to become blocked
and not work properly.
Do not place materials such as plastic bags or newspapers
under the seats. They may block
the air intake causing the air
vents to not work properly.
Do not change the seat covers. It may damage the air ventilation
seats.
(Continued)(Continued)
If the air vents do not operate,
restart the vehicle. If there is no
change, have your vehicle
inspected by an authorized
HYUNDAI dealer.NOTICE
OFF→ HIGH( )→ MIDDLE( )→ LOW( )
→

2-46
Safety system of your vehicle
This vehicle is equipped with an
Advanced Supplemental Air Bag
System for the driver's seat and front
passenger's seats.
The front air bags are designed to
supplement the three-point seat
belts. For these air bags to provide
protection, the seat belts must be
worn at all times when driving.
You can be severely injured or killed
in an accident if you are not wearing
a seat belt. Air bags are designed to
supplement seat belts, but do not
replace them. Also, air bags are not
designed to deploy in every collision.
In some accidents, the seat belts are
the only restraint protecting you. AIR BAG SAFETY PRECAUTIONS
ALWAYS use seat belts and child restraints - every trip, every time,
everyone! Even with air bags, you can be seriously injured or killed in
a collision if you are improperly belted or not wearing your seat belt
when the air bag inflates.
NEVER place a child in any child restraint or booster seat in the front
passenger seat. An inflating air bag could forcefully strike the infant
or child causing serious or fatal injuries.
ABC - Always Buckle Children under age 13 in the back seat. It is the
safest place for children of any age to ride. If a child age 13 or older
must be seated in the front seat, he or she must be properly belted
and the seat should be moved as far back as possible.
All occupants should sit upright with the seatback in an upright posi-
tion, centered on the seat cushion with their seat belt on, legs com-
fortably extended and their feet on the floor until the vehicle is parked
and the engine is turned off. If an occupant is out of position during
an accident, the rapidly deploying air bag may forcefully contact the
occupant causing serious or fatal injuries.
You and your passengers should never sit or lean unnecessarily
close to the air bags or lean against the door or center console.
Move your seat as far back as possible from front air bags, while still
maintaining control of the vehicle. The U.S. National Highway Traffic
Safety Administration (NHTSA) recommends that drivers allow at
least 10 inches (25 cm) between the center of the steering wheel and
the chest.
WARNING

2-51
Safety system of your vehicle
2
How Does the Air Bag System
Operate?
The SRS consists of the following
components:
1. Driver's front air bag module
2. Passenger's front air bag module
3. Side air bag modules
4. Curtain air bag modules
5. Retractor pre-tensioner assem-blies
6. Air bag warning light
7. SRS control module (SRSCM)/ Rollover sensor
8. Front impact sensors 9. Side impact sensors
10. Side pressure sensors
11. Driver's knee air bag module
12. Front passenger's seat belt
buckle sensors
13. Anchor pre-tensioner
14. Occupant classification system
The SRSCM continually monitors all
SRS components while the Engine
Start/Stop button is in the ON posi-
tion to determine if a crash impact is
severe enough to require air bag
deployment or pre-tensioner seat
belt deployment.
SRS warning light
The SRS (Supplement Restraint
System) air bag warning light on the
instrument panel displays the air bag
symbol depicted in the illustration.
The system checks the air bag elec-
trical system for malfunctions. The
light indicates that there is a potential
malfunction with your air bag system,
which could include your side and
curtain air bags used for rollover pro-
tection.
ODH033104L/Q

2-52
Safety system of your vehicleDuring a frontal collision, sensors will
detect the vehicle's deceleration. If
the rate of deceleration is high
enough, the control unit will inflate
the front air bags.
The front air bags help protect the
driver and front passenger by
responding to frontal impacts in
which seat belts alone cannot pro-
vide adequate restraint. When need-
ed, the side air bags help provide
protection in the event of a side
impact or rollover.
Air bags are activated (able toinflate if necessary) only when the
ignition switch is in the ON position.
Air bags inflate in the event of cer- tain frontal or side collisions 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
based upon the severity of a colli-
sion and its direction. These two
factors determine whether the sen-
sors produce an electronic deploy-
ment/inflation signal. Air bag deployment depends on a
number of factors including vehicle
speed, angles of impact and the
density and stiffness of the vehicles
or objects which your vehicle
impacts during a collision. The
determining factors are not limited
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 acci-
dent. It is much more likely that you
will simply see the deflated air bags
hanging out of their storage com-
partments after the collision.
In addition to inflating in certain side collisions, vehicles equipped
with a rollover sensor, side and
curtain air bags will inflate if the
sensing system detects a rollover.
When a rollover is detected, side
and curtain air bags will remain
inflated longer to help provide pro-
tection from ejection, especially
when used in conjunction with the
seat belts.
If your SRS malfunctions, the air
bag may not inflate properly dur-
ing an accident increasing the
risk of serious injury or death.
If any of the following condi-
tions occur, your SRS is mal-
functioning:
The light does not turn on for
approximately six seconds
when the ignition switch is in
the ON position.
The light stays on after illumi-
nating for approximately six
seconds.
The light comes on while the
vehicle is in motion.
The light blinks when the
engine is running.
Have an authorized HYUNDAI
dealer inspect the SRS as soon
as possible if any of these con-
ditions occur.
WARNING