2023 HYUNDAI SONATA Owners Manual

Seats & Safety System
3-12
OLF034072N
• Adjust the head restraints so the
middle of the head restraint is at the
same height as the height of the top
of the eyes.
• NEVER adjust the head restraint
position of the driver’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 adjusting it.
NOTICE
To prevent damage, NEVER hit or pull
on the head restraints.
CAUTION
When there are no occupants in the
rear seats, adjust the height of the head
restraint to the lowest position. The
rear seat head restraint can reduce the
visibility of the rear area. Front seat head restraints
ODN8039068L
Both the driver’s and passenger’s front
seat are equipped with adjustable head
restraints for the safety and comfort.
ODN8H039011
Adjusting the height up and down
To raise the head restraint:
1. Pull it up to the desired position (1).
To lower the head restraint:
1. Push and hold the release button (2) on the head restraint support.
2. Lower the head restraint to the desired position (3).

03
3-13
OLF034015
NOTICE
If you recline the seatback towards the
front with the head restraint and seat
cushion raised, the head restraint may
come in contact with the sunvisor or
other parts of the vehicle.
„„Type A
ODN8039012
„„Type B
ODN8039013
Removal/Reinstallation
To remove the head restraint:
1. Recline the seatback (2) rearward using the seatback angle lever (1).
2. Raise the head restraint as far as it can go.
3. Press the head restraint release button (3) while pulling the head restraint up
(4).

Seats & Safety System
3-14
„„Type A
ODN8039014
„„Type B
ODN8039015
To reinstall the head restraint:
1. Put the head restraint poles (2) into the holes while pressing the release
button (1).
2. Adjust the head restraint to the appropriate height.
3. Adjust the seatback (4) forward using the seatback angle lever (3). Rear seat head restraints
ODN8039069L
The rear seats are equipped with head
restraints in all the seating positions for
the passenger’s safety and comfort.
ODN8H039017
Adjusting the height up and down
To raise the head restraint:
1. Pull it up to the desired position (1).
To lower the head restraint:
1. Push and hold the release button (2) on the head restraint support.
2. Lower the head restraint to the desired position (3).

03
3-15
Seat Warmers and Air Ventilation
Seats
Seat warmers (if equipped)
Seat warmers are provided to warm the
seats during cold weather.
WARNING
The seat warmers can cause a SERIOUS
BURN, even at low temperatures and
especially if used for long periods of time.
Passengers must be able to feel if the
seat is becoming too warm so they can
turn it off, if needed.
People who cannot detect temperature
change or pain to the skin should
use extreme caution, especially the
following types of passengers: • Infants, children, elderly or disabled
persons, or hospital outpatients.
• People with sensitive skin or who
burn easily.
• Fatigued individuals.
• Intoxicated individuals.
• People taking medication that can
cause drowsiness or sleepiness.
WARNING
NEVER place anything on the seat
that insulates against heat when the
seat warmer is in operation, such as a
blanket or seat cushion. This may cause
the seat warmer to overheat, causing a
burn or damage to the seat.
NOTICE
To prevent damage to the seat warmers
and seats:
Never use a solvent such as paint
thinner, benzene, alcohol or gasoline to
clean the seats.
Do not place heavy or sharp objects on
seats equipped with seat warmers.
Do not change the seat cover. It
may damage the seat warmer or air
ventilation system.

Seats & Safety System
3-16
„„Front
ODN8039019
„„Rear
ODN8039022
While the engine is running, push either
of the switches to warm the driver’s seat
or front passenger’s seat.
During mild weather or under conditions
where the operation of the seat warmer
is not needed, keep the switches in the OFF position. • Manual temperature control
Each time you push the switch, the
temperature setting of the seat is
changed as follows:
- Front seat

UP UP
OFF
g HIGH () g HIGH ()
DOWN
h i DOWN
LOW () f MIDDLE () g HIGH ()
DOWN U
P
•
Automatic temperature control
The seat warmer starts to automatically
control the seat temperature in order
to prevent low-temperature burns after being manually turned ON.
- Front seat
OFF g HIGH ()
h i 30 MIN
LOW () f MIDDLE ()
60 MIN
- Rear seat (if equipped)
OFF g HIGH () g LOW ()
h
30 MIN
You may manually press the switch to
increase seat temperature. However, it
soon returns the automatic mode again. • When pressing the switch for more
than 1.5 seconds with the seat warmer
operating, the seat warmer will turn OFF.
• The seat warmer defaults to the OFF
position whenever the ignition switch is
in the ON position. However, if the Auto
Comfort Control function is ON, the
driver’s seat warmer will turn on and off
depending on the ambient temperature.
• Auto Comfort Control (for driver’s seat, if equipped)
The seat warmer automatically controls
the seat temperature depending on the
ambient temperature when the engine
is running. If the seat warmer switch is
pushed, the seat warmer will have to be
controlled manually. To use this function,
it must be activated from the Settings
menu in the AVN system screen. For
more information, refer to the separately
supplied Car Infotainment System manual.

03
3-17
Front air ventilation seat (if equipped)
ODN8039023
The air ventilation seats are provided
to cool the front seats by blowing air
through small vent holes on the surface
of the seat cushions and seatbacks.
When the operation of the air ventilation
seat is not needed, keep the switches in the OFF position. 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, the airflow
changes as follows:
DOWN DOWN
OFF g HIGH () g HIGH ()
UP
h i UP
LOW () f MIDDLE () g HIGH ()
UP DOWN
• When pressing the switch for more than
1.5 seconds with the air ventilation seat
operating, the operation will turn OFF.
• The air ventilation seat defaults to the
OFF position whenever the ignition switch
is in the ON position. However, if the
Auto Comfort Control function is ON,
the driver’s air ventilation seat will turn
on and off depending on the ambient
temperature.
• Auto Comfort Control (for driver’s seat, if equipped)
The air ventilation seat automatically
controls the seat temperature depending
on the ambient temperature when the
engine is running. If the air ventilation
seat switch is pushed, the seat warmer
will have to be controlled manually.To use
this function, it must be activated from
the Settings menu in the AVN system
screen. For more information, refer to
the separately supplied Car Infotainment
System manual.

Seats & Safety System
3-18
NOTICE
To prevent damage to the air ventilation
seat: • Use the air ventilation seat ONLY
when the climate control system
is on. Using the air ventilation seat
for prolonged periods of time with
the climate control system off could
cause the air ventilation seat to malfunction.
• NEVER use a solvent such as paint
thinner, benzene, alcohol or gasoline
to clean the seats.
• Avoid spilling liquids on the surface
of the front seats and seatbacks;
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 seat.
• If the air vents do not operate, restart
the vehicle. If there is no change,
have the vehicle inspected by an
authorized HYUNDAI dealer.

03
3-19
Seat BeltS
This section describes how to use the
seat belts properly. It also describes
some of the things to avoid when using
seat belts.
Seat Belt Safety Precautions
Always fasten your seat belt and make
sure all passengers have fastened their
seat belts before starting any trip. Air
bags are designed to supplement the
seat belt as an additional safety device,
but they are not a substitute. Most
countries require all occupants of a
vehicle to wear seat belts.
WARNING
Seat belts must be used by ALL
passengers whenever the vehicle is
moving. Take the following precautions
when adjusting and wearing seat belts: • ALWAYS properly restrain children
under age 13 in the rear seats.
• 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
possible 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 shoulder
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.
• Do not use a seat belt if the webbing
or hardware is damaged. •
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 resulting 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.
WARNING
Damaged seat belts and seat belt
assemblies will not operate properly.
Always replace: • Frayed, contaminated, or damaged
webbing
• Damaged hardware
• The entire seat belt assembly after it
has been worn in an accident, even
if damage to webbing or assembly is
not apparent