HYUNDAI SONATA 2021 Owner's Manual

Vehicle Information
2-8
BulB wattagE
Light bulb Bulb type
Wattage
Front Headlamp (High/Low)
LEDLED
Daytime running lamp (DRL)/ Position lamp LED
LED
Turn signal lamp LEDLED
Side repeater lamp (Outside mirror) LED
LED
Rear Stop lamp
Bulb type PY21W
21
LED type LED LED
Tail lamp LEDLED
Turn signal lamp LEDLED
Reverse lamp W16W16
High mounted stop lamp LEDLED
License plate lamp W5W5
Interior Map lamp
Type A
WEDGE 10
Type B LED LED
Personal lamp (if equipped) LEDLED
Room lamp (if equipped) FESTOON 10
Vanity mirror lamp FESTOON5
Luggage compartment lamp FESTOON 5

02
2-9
tirEs anD whEEls
Item Tire SizeWheel
Size Inflation pressure kPa (psi)
Wheel
lug nut torque kgf·m
(lbf·ft, N·m)
Normal load
*1Maximum load
Front RearFront Rear
Full size tire 205/65 R16 6.5Jx16 240 (35) 240 (35) 240 (35) 240 (35)
11~13
(79~94,
107~127)
215/55 R17 7.0Jx17 240 (35) 240 (35) 240 (35) 240 (35)
235/45 R18 7.5Jx18 240 (35) 240 (35) 240 (35) 240 (35)
245/40 R19 8.0JX19 240 (35) 240 (35) 240 (35) 240 (35)
Compact
spare tire
(if equipped) T125/80 D16 4Tx16 420 (60) 420 (60) 420 (60) 420 (60)
T135/80 D17 4Tx17 420 (60) 420 (60) 420 (60) 420 (60)
T135/80 D18 4Tx18 420 (60) 420 (60) 420 (60) 420 (60)
*1 : Normal load: Up to 3 persons
NOTICE
• It is permissible to add 3 psi to the standard tire pressure specification if colder
temperatures are expected soon.
Tires typically lose 1psi (7kPa) for every 12°F temperature drop. If extreme
temperature variations are expected, recheck your tire pressure as necessary to
keep them properly inflated.
• Tire inflation pressures will vary with changes in elevation. If driving in areas of
higher or lower elevation, be sure to check and adjust for proper tire inflation.
CAUTION
• When replacing tires, use the same size originally supplied with the vehicle.
Using tires of a different size can damage the related parts or not work properly.
• When replacing tires, ALWAYS use the same size, type, construction and tread
pattern supplied with the vehicle for all tires.

Vehicle Information
2-10
volumE an D wE ight
Items Smartstream G1.6 T-GDi Smartstream G2.5 GDi
A/T A/T
Gross vehicle weight lbs. (kg)4354 (1975)
Luggage volume (SAE) cu ft (ℓ) 16 (453)
A/T : Automatic Transmission
air ConDitioning sy st E m
ItemWeight of Volume Classification
Refrigerant oz. (g)Smartstream G1.6 T-GDi 17.6±0.88 (500±25) R-1234yf
Smartstream G2.5 GDi 18.3±0.88 (520±25) R-1234yf
Compressor lubricant oz. (g)32.8±0.35 (80±10) PAG (FD46XG)
Contact an authorized HYUNDAI dealer for more details.

02
2-11
rECommE n DED lu B ri Cant s an D Ca PaC iti E s
To help achieve proper engine and powertrain performance and durability, use only
lubricants of the proper quality. The correct lubricants also help promote engine
efficiency that results in improved fuel economy.
These lubricants and fluids are recommended for use in your vehicle.
LubricantVolumeClassification
Engine oil
*1
(drain and refill) Smartstream
G1.6 T-GDi 5.07
US qt. (4.8 ℓ)
S

AE 0W-20, API SN PLUS/SP or
ILSAC GF-6
Smartstream G2.5 GDi 5.49 US qt. (5.2 ℓ)
Automatic transmission fluid 6.89 US qt. (6.5ℓ) MICHANG ATF SP-IV, SK ATF SP IV,
NOCA ATF SP-IV, S-oil ATF SP-IV
HYUNDAI genuine ATF SP-IV
or other brands meeting the
above specification approved by
HYUNDAI Motor Co.
Coolant Smartstream
G1.6 T-GDi 4.76 US qt. (4.5 ℓ)
Mixture of antifreeze and distilled
water (Ethylene glycol base
coolant for aluminum radiator)
Smartstream
G2.5 GDi 5.49 US qt. (5.2 ℓ)
Brake fluid
*20.74 ~ 0.85 US qt. (0.7 ~ 0.8 ℓ) DOT-4
Fuel 15.85 US gal. (60 ℓ)
14.79 US gal. (56 ℓ) (for ECO package model) Refer to “Fuel requirements” in
chapter 1.
*1 : Refer to the recommended SAE viscosity numbers on page 12.
*2 : To maintain the best braking performance and ABS/ESC performance, we recommend
that you use genuine brake fluid that conform to specifications. (Standard : SAE J1704
DOT-4 LV, ISO4925 CLASS-6 and FMVSS 116 DOT-4)

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 <API SN PLUS (or above) Full synthetic> 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 )
&#132;&#132;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.
&#132;&#132;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