2021 HYUNDAI SONATA HYBRID seats

03
3 -7
Power adjustment (if equipped)
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.
WARNING
NEVER allow children in the vehicle
unattended. The power seats are
operable when the vehicle is turned off.
NOTICE
To prevent damage to the seats:
• Always stop adjusting the seats when
the seat has moved as far forward or
rearward as possible.
• Do not adjust the seats for longer
than necessary when the vehicle
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 malfunction.
ODN8039005
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.
ODN8039006
Seatback angle
To adjust the seatback:
1. Rotate the top of control switch
forward or rearward.
2. Release the switch once the seatback
reaches the desired position.

Safety System
3-8
Reclining seatback
Sitting in a reclined position when the
vehicle is in motion can be dangerous.
Even when buckled up, the protection of
your restraint system (seat belts and air
bags) is greatly reduced by reclining your
seatback.
WARNING
NEVER ride with a reclined seatback
when the vehicle is moving. Riding
with a reclined seatback increases your
chance of serious or fatal injuries in
the event of a collision or sudden stop.
Driver and passengers should ALWAYS
sit well back in their seats, properly
belted, and with the seatbacks upright.
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.ODN8039007
Seat cushion tilt (1) (for driver’s seat)
To change the angle of the front part of
the seat cushion: Push the front portion
of the control switch up to raise or
down to lower the front part of the seat
cushion. Release the switch once the
seat reaches the desired position.
Seat cushion height (2) (for driver’s seat)
To change the height of the seat cushion:
Push the rear portion of the control
switch up to raise or down to lower the
height of the seat cushion. Release the
switch once the seat reaches the desired
position.

Safety System
3-10
Rear Seats
Folding the rear seat
The rear seatbacks can be folded to
facilitate carrying long items or to
increase the luggage capacity of the
vehicle.
WARNING
• Never allow passengers to sit on top
of the folded down seatback while
the vehicle is moving. This is not a
proper seating position and no seat
belts are available for use. This could
result in serious injury or death in
case of an accident or sudden stop.
• Objects carried on the folded down
seatback should not extend higher
than the top of the front seatbacks.
This could allow cargo to slide
forward and cause injury or damage
during sudden stops.
To fold down the rear seatback:
1. Set the front seatback to the upright
position and if necessary, slide the
front seat forward.
ODN8039062L
2. Lower the rear head restraints to
the lowest position by pushing and
holding the release button and
pushing down on the head restraint.
ODN8039063L
3. Pull on the seatback folding lever
located in the trunk.
ODN8039064L
4. Fold the seatback toward the front of
the vehicle.
5. To use the rear seat, lift and pull the
seatback rearward. Pull the seatback
firmly until it clicks into place. Make
sure the seatback is locked in place.

03
3-11
WARNING
When returning the rear seatback 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 seatback. In an accident
or sudden stop, an unlocked seatback
could allow cargo to move forward with
great force and enter the passenger
compartment, which could result in
serious injury or death.
WARNING
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 vehicle is off, the shift
button 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 button
is inadvertently moved to another
position.
Armrest
ODN8039018
The armrest is located in the center of
the rear seat. Pull the armrest down from
the seatback to use it.
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.
WARNING
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 passengers BEFORE
starting the vehicle.
• NEVER let anyone ride in a seat
with the head restraints removed or
reversed.

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).

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
Front 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.

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:
LOW ( ) ← MIDDLE (





) → HIGH (













)
OFF → HIGH (








) → HIGH (













)
DOWN
DOWN
UP
UP ↑
↓ 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.