2021 HYUNDAI SONATA Owners Manual

Vehicle Information
2-12
Recommended SAE Viscosity
Number
CAUTION
Always be sure to clean the area around
any filler plug, drain plug, or dipstick
before checking or draining any
lubricant. This is especially important
in dusty or sandy areas and when the
vehicle is used on unpaved roads.
Cleaning the plug and dipstick areas
will prevent dirt and grit from entering
the engine and other mechanisms that
could be damaged.Engine oil viscosity (thickness) has an
effect on fuel economy and cold weather
operating (engine start and engine oil
flowability). Lower viscosity engine oils
can provide better fuel economy and
cold weather performance, however,
higher viscosity engine oils are required
for satisfactory lubrication in hot
weather.
Using oils of any viscosity other than
those recommended could result in
engine damage.
When choosing an oil, consider the
range of temperature your vehicle will be
operated in before the next oil change.
Proceed to select the recommended oil
viscosity from the chart.
Temperature Range for SAE Viscosity Numbers
Temperature °C
-30 -20 -10 0 10 20 30 40 50
(°F) -100 20 40 60 80 100 120
Engine Oil *
10W-20
*1 : Requires grade engine oil. If a lower grade
engine oil (mineral oil including Semi-synthetic) is used, then the engine oil and engine
oil filter must be replaced as indicated for severe maintenance condition.
An engine oil displaying this American Petroleum Institute(API)
Certification Mark conforms to the International Lubricant Specification
Advisory Committee (ILSAC). It is recommended to only use engine oils
that uphold this API Certification Mark.

02
2-13
vEhiClE iDEntifiCation
Number (vi N )
„„Frame number
ODN8019020
The vehicle identification number (VIN) is
the number used in registering your car
and in all legal matters pertaining to its
ownership, etc.
The number is punched on the floor
under the passenger seat.
„„VIN label
ODN8019026L
The VIN is also on a plate attached to the
top of the dashboard. The number on
the plate can easily be seen through the
windshield from outside.
vEhiClE CErtifiCa tion
l

a BE l
ODN8019021
The vehicle certification label attached
on the driver’s side center pillar gives the
Vehicle Identification Number (VIN).

Vehicle Information2-14
tirE sPECifiCa tion an D
Pr E ssur E l a BE l
ODN8H019025L
The tires supplied on your new
vehicle are chosen to provide the best
performance for normal driving.
The tire label located on the driver’s
side center pillar gives the tire pressures
recommended for your car.
EnginE numBEr
ODN8019022
The engine number is stamped on the
engine block as shown in the drawing.

02
2-15
(iF eQui PP e D)
ODN8A079026
The refrigerant label provides
information such as refrigerant type and
amount. (R-1234yf)
rEfrigErant laBEl

Safety System
3. Seats & Safety System
3
Important Safety Precautions ....................................................................... 3 -2Always Wear Your Seat Belt ........................................................................\
.............3 -2
Restrain All Children ........................................................................\
......................... 3-2
Air Bag Hazards
........................................................................\
................................ 3-2
Driver Distraction
........................................................................\
............................. 3-2
Control Your Speed
........................................................................\
.......................... 3-2
Keep Your Vehicle in Safe Condition

....................................................................... 3

-2
Seats ........................................................................\
.......................................3 -3Safety Precautions ........................................................................\
...........................3-4
F ront Seats ........................................................................\
........................................ 3-5
Rear Seats
........................................................................\
........................................ 3-10
Head Restraints
........................................................................\
................................ 3-11
Seat Warmers and Air Ventilation Seats
................................................................3-15
Seat Belts ........................................................................\
............................... 3- 19Seat Belt Safety Precautions ........................................................................\
..........3- 19
Seat Belt Warning Light ........................................................................\
................. 3-20
Seat Belt Restraint System
........................................................................\
............. 3-21
Additional Seat Belt Safety Precautions
...............................................................3-26
Care of Seat Belts
........................................................................\
........................... 3-28
Child Restraint System (CRS) ......................................................................3- 29Children Always in the Rear ........................................................................\
...........3- 29
Selecting a Child Restraint System (CRS) .............................................................3-30
Installing a Child Restraint System (CRS)
..............................................................3-31
Air Bag - Advanced Supplemental Restraint System ................................3- 37Where Are the Air Bags? ........................................................................\
................3- 39
How Does the Air Bag System Operate? ...............................................................3-42
What to Expect After an Air Bag Inflates
..............................................................3-46
Occupant Classification System (OCS)
................................................................. 3-47
Why Didn’t My Air Bag Go Off in a Collision?
.......................................................3-52
SRS Care
........................................................................\
......................................... 3-56
Additional Safety Precautions
........................................................................\
....... 3-57
Air Bag Warning Labels
........................................................................\
.................. 3-57
This chapter provides you with important information about how to protect yourself and your
passengers. It explains how to properly use your seats and seat belts, and how your air bags work.
Additionally, this chapter explains how to properly restrain infants and children in your vehicle.

3-2
You will find many safety precautions
and recommendations throughout this
section, and throughout this manual.
The safety precautions in this section are
among the most important.
Always Wear Your Seat Belt
A seat belt is your best protection in all
types of accidents. Air bags are designed
to supplement seat belts, not replace
them. So even though your vehicle is
equipped with air bags, ALWAYS make
sure you and your passengers wear your
seat belts, and wear them properly.
Restrain All Children
All children under age 13 should ride
in your vehicle properly restrained in a
rear seat, not the front seat. Infants and
small children should be restrained in
an appropriate child restraint. Larger
children should use a booster seat with
the lap/shoulder belt until they can use
the seat belt properly without a booster
seat.
Air Bag Hazards
While air bags can save lives, they can
also cause serious or fatal injuries to
occupants who sit too close to them, or
who are not properly restrained. Infants,
young children, and shorter adults are at
the greatest risk of being injured by an
inflating air bag. Follow all instructions
and warnings in this manual.
Driver Distraction
Driver distraction presents a serious and
potentially deadly danger, especially for
inexperienced drivers. Safety should be
the first concern when behind the wheel,
and drivers need to be aware of the wide
array of potential distractions, such as
drowsiness, reaching for objects, eating,
personal grooming, other passengers,
and using cellular phones.Drivers can become distracted when
they take their eyes and attention off
the road or their hands off the wheel to
focus on activities other than driving. To
reduce your risk of distraction or getting
into an accident:
•
ALWAYS set up your mobile devices
(i.e., MP3 players, phones, navigation
units, etc.) when your vehicle is
parked or safely stopped.
• ONLY use your mobile device when
allowed by laws and when conditions
permit safe use. NEVER text or email
while driving. Most states have laws
prohibiting drivers from texting. Some
states and cities also prohibit drivers
from using handheld phones.
• NEVER let the use of a mobile device
distract you from driving. You have a
responsibility to your passengers and
others on the road to always drive
safely, with your hands on the wheel
as well as your eyes and attention on
the road.
Control Your Speed
Excessive speed is a major factor in crash
injuries and deaths. Generally, the higher
the speed, the greater the risk, but
serious injuries can also occur at lower
speeds. Never drive faster than is safe
for current conditions, regardless of the
maximum speed posted.
Keep Your Vehicle in Safe
Condition
Having a tire blowout or a mechanical
failure can be extremely hazardous. To
reduce the possibility of such problems,
check your tire pressures and condition
frequently, and perform all regularly
scheduled maintenance.
Important Safety precautIonS
Seats & Safety System

3-3
03
Front seats
(1)
F
orward and rearward
(2)

Sea
tback angle
(3)

Sea
t cushion height
(4)
Sea

t cushion angle
(5)

L
umbar support Rear seats
(6)

Armr
est
(7)

Sea
tback folding
SeatS
ODN8A030001
The actual layout of the vehicle may differ from the illustration.
„„Driver’s Side • Manual „„Passenger’s Side • Manual
• Power• Power

3-4
Safety Precautions
Adjusting the seats so that you are sitting
in a safe, comfortable position plays an
important role in driver and passenger
safety together with the seat belts and
air bags in an accident.
WARNING
Do not use a cushion that reduces
friction between the seat and the
passenger. The passenger’s hips may
slide under the lap portion of the seat
belt during an accident or a sudden
stop. Serious or fatal internal injuries
could result because the seat belt
cannot operate properly.
Air bags
You can take steps to reduce the risk
of being injured by an inflating air bag.
Sitting too close to an air bag greatly
increases the risk of injury in the event
the air bag inflates.
The National Highway Traffic Safety
Administration (NHTSA) recommends
that drivers allow at least 10 inches (25
cm) between the center of the steering
wheel and their chest.
WARNING
To reduce the risk of serious injury or
death from an inflating air bag, take the
following precautions:
• Adjust the driver’s seat as far to the
rear as possible while maintaining
the ability to maintain full control of
the vehicle.
• Adjust the front passenger seat as far
to the rear as possible.
• Hold the steering wheel by the rim
with hands at the 9 o’clock and 3
o’clock positions to minimize the risk
of injuries to your hands and arms. •
NEVER place anything or anyone
between the steering wheel and the
air bag.
• Do not allow the front passenger to
place feet or legs on the dashboard
to minimize the risk of leg injuries.
Seat belts
Always fasten your seat belt before
starting any trip.
At all times, passengers should sit
upright and be properly restrained.
Infants and small children must be
restrained in appropriate child restraint
systems. Adults and children who
have outgrown a booster seat must be
restrained using the seat belts.
WARNING
Take the following precautions when
adjusting your seat belt:
• NEVER use one seat belt for more
than one occupant.
• Always position the seatback upright
with the lap portion of the seat belt
snug and low across the hips.
• NEVER allow children or small infants
to ride on a passenger’s lap.
• Do not route the seat belt across your
neck, across sharp edges, or reroute
the shoulder strap away from your
body.
• Do not allow the seat belt to become
caught or jammed.
Seats & Safety System