Hyundai Sonata 2020 Service Manual

03
3-13
OLF034015OLF034015
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 AType A
ODN8039012ODN8039012
Type BType B
ODN8039013ODN8039013
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 System3-14
Type AType A
ODN8039014ODN8039014
Type BType B
ODN8039015ODN8039015
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
ODN8039069LODN8039069L
The rear seats are equipped with head
restraints in all the seating positions for
the passenger’s safety and comfort.
ODN8H039017ODN8H039017
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.

Seats & Safety System3-16
FrontFront
ODN8039019ODN8039019
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 controlEach time you push the switch, the
temperature setting of the seat is
changed as follows:
- Front seat
UP UP
OFF  HIGH ()  HIGH ()
DOWN DOWN
LOW () MIDDLE ()  HIGH ()

DOWN UP
• Automatic temperature controlThe seat warmer starts to automatically
control the seat temperature in order
to prevent low-temperature burns after
being manually turned ON.
- Front seat
OFF  HIGH ()
30 MIN
LOW () MIDDLE ()
60 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)
ODN8039023ODN8039023
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  HIGH ()  HIGH ()
UP UP
LOW () MIDDLE ()  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 System3-18
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 states
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

Seats & Safety System3-20
Seat Belt Warning Light
Seat belt warning light
(for driver’s seat)
ODN8039070LODN8039070L
As a reminder to the driver, the seat
belt warning light will illuminate for
approximately 6 seconds each time
you place the ignition switch to the ON
position regardless of belt fastening.
However, if the seat belt is Unfastened,
a warning chime will sound for
approximately 6 seconds.
If you continue not to fasten the seat belt
and you drive under 12 mph (20 km/h),
the warning light will stay illuminated.
If you continue not to fasten the seat
belt and you drive over 12 mph (20 km/h)
the seat belt warning chime will sound
for approximately 100 seconds and the
corresponding warning light will blink.
If you unfasten the seat belt while driving
under 12 mph (20 km/h), the seat belt
warning light will illuminate until the seat
belt is fastened.
If you unfasten the seat belt while
driving over 12 mph (20 km/h), the
seat belt warning chime will sound for
approximately 100 seconds and the
corresponding warning light will blink.
Seat belt warning light
(for front passenger’s seat)
As a reminder to the front passenger,
the front passenger’s seat belt warning
lights will illuminate for approximately 6
seconds each time you place the ignition
switch to the ON position regardless of
belt fastening.
If you continue not to fasten the seat belt
and you drive under 12 mph (20 km/h),
the warning light will stay illuminated.
If you continue not to fasten the seat
belt and you drive over 12 mph (20 km/h)
the seat belt warning chime will sound
for approximately 100 seconds and the
corresponding warning light will blink.
If you unfasten the seat belt while driving
under 12 mph (20 km/h) the seat belt
warning light will illuminate until the seat
belt is fastened.
If you unfasten the seat belt while
driving over 12 mph (20 km/h), the
seat belt warning chime will sound for
approximately 100 seconds and the
corresponding warning light will blink.
WARNING
The front passenger’s seat belt warning
light may not properly operate if the
front passenger does not sit properly in
the seat.
If you place an object on the passenger
seat or back seat or under the seats,
the warning chime may sound. Please
remove the object if the chime sounds.

03
3-21
Seat Belt Restraint System
WARNING
Improperly positioned seat belts may
increase the risk of serious injury
in an accident. Take the following
precautions when adjusting 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.
• Position one arm under the shoulder
belt and the other over the belt, as
shown in the illustration.
• Always position the shoulder belt
anchor into the locked position at the
appropriate height.
• NEVER position the shoulder belt
across your neck or face.
Seat Belt-Driver’s 3-point system
with emergency locking retractor
OHI038140OHI038140
To fasten your seat belt:
Pull the seat belt out of the retractor and
insert the me

tal tab (1) into the buckle
(2). There will be an audible “click” when
the tab locks into the buckle.
OHI038137OHI038137
You should place the lap belt (1) portion
across your hips and the shoulder belt (2)
portion across your chest.
The seat belt automatically adjusts to the
proper length 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 move with you.
If there is a sudden stop or impact, the
belt will lock into position. It will also lock
if you try to lean forward too quickly.

Seats & Safety System3-22
NOTICE
If you are not able to smoothly pull
enough of the seat belt out from the
retractor, firmly pull the seat belt out
and release it. After release, you will be
able to pull the belt out smoothly.
Height adjustment
You can adjust the height of the shoulder
belt anchor t
o one of the three different
positions for maximum comfort and
safety. The shoulder portion should be
adjusted so it lies across your chest and
midway over your shoulder nearest the
door, not over your neck. To adjust the
height of the seat belt anchor, lower
or raise the height adjuster into an
appropriate position.
Front seatFront seat
ODN8039072LODN8039072L
To raise the height adjuster, pull it up
(1). To lower it, push it down (3) while
pressing the height adjuster button (2).
Release the button to lock the anchor
into position. Try sliding the height
adjuster to make sure that it has locked
into position.
OHI038142OHI038142
To release your seat belt:
Press the release button (1) in the locking
buckle.
When it is r

eleased, 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.
Rear Seat Belt – Passenger’s 3-point
system with convertible locking
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
accommodate the installation of child
restraint systems. Although a convertible
retractor is also installed in the front
passenger seat position, NEVER place
any infant/child restraint system in the
front seat of the vehicle.