2020 Hyundai Sonata climate control

08
8-37
Tire Replacement
Tread wear indicatorTread wear indicator
OLMB073027OLMB073027
If the tire is worn evenly, a tread wear
indicator will appear as a solid band
across the tread. This shows there is
less than 2/32 inch (1.6 mm) of tread left
on the tire. Replace the tire when this
happens.
Do not wait for the tread surface to
become level with the tread wear
indicators before replacing the tire.
WARNING
To reduce the risk of DEATH or SERIOUS
INJURY:
• Replace tires that are worn, show
uneven wear, or are damaged.
Worn tires can cause loss of braking
effectiveness, steering control, and
traction.
• Always replace tires with the same
size as each tire that was originally
supplied with this vehicle. Using
tires and wheels other than the
recommended sizes could cause
unusual handling characteristics,
poor vehicle control, or negatively
affect your vehicle’s Anti-Lock Brake
System (ABS) resulting in a serious
accident.
• Tires degrade over time, even when
they are not being used. Regardless
of the remaining tread, HYUNDAI
recommends that tires be replaced
after six (6) years of normal service.
• When replacing tires, it is
recommended to replace the two
front or two rear tires as a pair.
Replacing just one tire can seriously
affect your vehicle’s handling. If
only replacing one pair of tires, it is
recommended to install the pair of
new tires on the rear axle.
• Heat caused by hot climates or
frequent high loading conditions can
accelerate the aging process. Failure
to follow this warning may cause
sudden tire failure, which could lead
to a loss of vehicle control resulting
in an accident.

08
8-41
Tread wear
The tread wear grade is a comparative
r
ating based on the wear rate of the tire
when tested under controlled conditions
on a specified government test course.
For example, a tire graded 150 would
wear one-and-a-half times (1½) as well
on the government course as a tire
graded 100.
The relative performance of tires
depends upon the actual conditions
of their use, however, and may depart
significantly from the norm due to
variations in driving habits, service
practices and differences in road
characteristics and climate.
These grades are molded on the
sidewalls of passenger vehicle tires. The
tires available as standard or optional
equipment on your vehicle may vary with
respect to grade.
Traction AA, A, B & C
The traction grades, from highest to
lo
west, are AA, A, B and C. Those grades
represent the tire’s ability to stop on wet
pavement as measured under controlled
conditions on specified government
test surfaces of asphalt and concrete.
A tire marked C may have poor traction
performance.
WARNING
The traction grade assigned to this tire
is based on straight-ahead braking
traction tests, and does not include
acceleration, cornering, hydroplaning,
or peak traction characteristics.
Temperature A, B & C
The temperature grades are A (the
highes
t), B and C representing the tire’s
resistance to the generation of heat
and its ability to dissipate heat when
tested under controlled conditions on a
specified indoor laboratory test wheel.
Sustained high temperature can cause
the material of the tire to degenerate
and reduce tire life, and excessive
temperature can lead to sudden tire
failure. Grade C responds to a level
of performance which all passenger
car tires must meet under the Federal
Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels
of performance on the laboratory test
wheel than the minimum required by
law.
WARNING
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, under-inflation, over-inflation,
or excessive loading, either separately
or in combination, can cause heat build-
up and possible sudden tire failure.
This may cause loss of vehicle control
resulting in an accident.

IndexI-2
A
Air bag warning labels ........................................................................\
................. 3-57
Air bags ........................................................................\
........................................ 3-37 Driver’s air bag ........................................................................\
....................... 3-39
Passenger’s front air bag ........................................................................\
......... 3-39
Side air bags ........................................................................\
............................ 3-40
Curtain air bags ........................................................................\
....................... 3-41
How does the air bags system operate?...................................\
........................ 3-42
SRS components and functions ....................................................................... 3-42
SRS warning light ........................................................................\
................... 3-43
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
Air bag collision sensors ........................................................................\
......... 3-53
Air bag inflation conditions ........................................................................\
.... 3-54
Air bag non-inflation conditions ..................................................................... 3-54
SRS Care ........................................................................\
................................. 3-56
Additional safety precautions ........................................................................\
.. 3-57
Air bag warning labels ........................................................................\
............ 3-57
Air cleaner ........................................................................\
................................... 8-26
Air cleaner filter replacement ........................................................................\
...... 8-26
Air conditioning system specification ................................................................. 2-10
Antenna ................................................................\
.............................................. 5-152
Anti-lock Brake System (ABS) ........................................................................\
... 6-27
Appearance care........................................................................\
........................... 8-61 Exterior care ........................................................................\
............................ 8-61
Interior care ........................................................................\
............................. 8-65
Armrest ................................................................\
................................................ 3-11
Audio / Video / Navigation system .................................................................... 5-154
Auto defogging system ........................................................................\
.............. 5-141
AUTO headlamp position ........................................................................\
............ 5-74
Auto LOCK - Enable on shift ........................................................................\
...... 5-34
Auto LOCK - Enable on speed ........................................................................\
.... 5-34
Auto UNLOCK - Enable on shift ........................................................................\
5-34
Auto UNLOCK -Air bag deployment ................................................................. 5-34
Automatic climate control system ..................................................................... 5-127
Automatic heating and air conditioning ........................................................ 5-128
Manual temperature control mode ................................................................ 5-129

IndexI-4
Bulb replacement ........................................................................\
......................... 8-55 Headlamp ...............................................................\
......................................... 8-55
Parking lamp ........................................................................\
........................... 8-55
Daytime running light ........................................................................\
............. 8-55
Turn signal lamp ........................................................................\
...................... 8-55
Cornering lamp .........................................................\
...................................... 8-55
Side marker ........................................................................\
............................. 8-55
Auxiliary lamp ........................................................................\
........................ 8-55
Side repeater lamp ........................................................................\
................... 8-56
Rear combination light bulb ........................................................................\
.... 8-56
High mounted stop lamp ........................................................................\
......... 8-58
License plate light ........................................................................\
.................. 8-58
Interior light ........................................................................\
........................... 8-59
Bulb wattage ........................................................................\
.................................. 2-8
C
California perchlorate notice ........................................................................\
....... 8-70
Capacities (Lubricants) ........................................................................\
................ 2-11
Care Tire care ........................................................................\
................................... 8-34
Exterior care ........................................................................\
............................ 8-61
Interior care ........................................................................\
............................. 8-65
Center console storage ........................................................................\
............... 5-144
Central door lock/unlock switch ........................................................................\
.. 5-33
Certification label ........................................................................\
........................ 2-13
Check tire inflation pressure ........................................................................\
........ 8-35
Child restraint system (CRS) ........................................................................\
....... 3-29 Selecting a child restraint system (CRS) ......................................................... 3-30
Rearward-facing child restraint system ........................................................... 3-30
Forward-facing child restraint system ............................................................. 3-31
Booster seats........................................................................\
............................ 3-31
Installing a child restraint system (CRS) ........................................................ 3-31
Lower anchors and tether for Children (LATCH System) .............................. 3-32
Lower anchors ........................................................................\
........................ 3-33
Tether anchors ........................................................................\
......................... 3-34
Lap/shoulder belt ........................................................................\
..................... 3-35
Child-protector rear door lock ........................................................................\
..... 5-35
Climate control air filter ........................................................................\
.............. 8-28

IndexI-12
Manual climate control system ........................................................................\
.. 5-118 Heating and air conditioning ........................................................................\
. 5-119
Mode selection ........................................................................\
...................... 5-120
Instrument panel vents ........................................................................\
.......... 5-122
Temperature control ........................................................................\
.............. 5-122
Air intake control ........................................................................\
.................. 5-122
Fan speed control ........................................................................\
.................. 5-123
Air conditioning ........................................................................\
.................... 5-123
System operation ........................................................................\
................... 5-124
System maintenance ........................................................................\
.............. 5-125
Air conditioning refrigerant label......................................\
............................ 5-126
Mirrors ................................................................\
................................................. 5-46
Inside rearview mirror ........................................................................\
............. 5-46
HomeLink
® system.................................................................\
......................... 5-47
Side view mirrors ........................................................................\
.................... 5-53
Adjusting the side view mirrors ...................................................................... 5-54
Folding the side view mirrors ........................................................................\
. 5-54
Reverse parking aid function ........................................................................\
.. 5-55
N
Navigation-based Smart Cruise Control (NSCC) .............................................. 6-105
O
Occupant Classification System (OCS) ............................................................... 3-47
Odometer ...............................................................\
................................................ 4-5
Oil (Engine) ........................................................................\
................................. 8-19
Outside temperature gauge ........................................................................\
............ 4-5
Owner maintenance ........................................................................\
....................... 8-5
P
Panoramic sunroof ........................................................................\
....................... 5-60
Parking lamp position ........................................................................\
.................. 5-75
Passenger’s front air bag ........................................................................\
.............. 3-39
Power brakes ........................................................................\
................................ 6-20
Power outlet ........................................................................\
............................... 5-146
Power window lock switch ........................................................................\
.......... 5-59
Pre-tensioner seat belt ........................................................................\
.................. 3-24 Retractor pretensioner ........................................................................\
............. 3-24