climate control Hyundai Sonata 2020 User Guide

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Information
Using the system primarily in Fresh mode
and Recirculation mode only when needed
is recommended for best results.
Prolonged operation of the heater in
Recirculation mode and without the A/C
ON can cause fogging of the windshield.
In addition, prolonged use of the A/C
ON in Recirculation mode may result in
excessively dry, dehumidified air in the
cabin.
WARNING
• Continued use of the climate control
system operation in Recirculation
mode for a prolonged period of
time may cause drowsiness to the
occupants in the cabin. This may lead
to loss of vehicle control which may
lead to an accident.
• Continued use of the climate control
system operation in Recirculation
mode with the A/C OFF may allow
humidity to increase inside the
cabin. This may cause condensation
to accumulate on the windshield and
obscure visibility.
• Do not sleep in your vehicle or
remain parked in your vehicle with
the windows up and either the
heater or the air conditioning ON for
prolonged periods of time. Doing so
may increase the levels of carbon
dioxide in the cabin which may lead
to serious injury or death.
Fan speed control
ODN8A059113ODN8A059113
Turn the knob to the right to increase
the fan speed and airflow. Turn the knob
to the left to decrease fan speed and
airflow.
Setting the fan speed control knob to the
“0” position turns off the fan.
NOTICE
Operating the fan speed when the
ignition switch is in the ON position
could cause the battery to discharge.
Operate the fan speed when the engine
is running.
Air conditioning
ODN8059114ODN8059114
Push the A/C button to turn the system
on (indicator light will illuminate) and off.

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05
1. Driver’s temperature control knob
2. Passenger’s temperature control knob
3. AUTO (automatic control) button
4. SYNC button
5. OFF button
6. Front windshield defroster button7. Air conditioning button
8. Air intake control button
9. Rear window defroster button
10. Fan speed control toggle switch
11. Mode selection toggle switch
12. Climate control information screen
AUTOMATIC CLIMATE CONTROL SYSTEM (IF EQUIPPED)
ODN8059102LODN8059102L

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Temperature conversion
If the battery has been discharged or
disconnect
ed, the temperature mode
display will reset to Centigrade.
To change the temperature unit from °C
to °F or °F to °C :
- Automatic climate control system
Press the AUTO button for 3 seconds while pressing the OFF button.
- Instrument cluster
Go to User Settings → Other → Temperature Unit.
The temperature unit on both the cluster
LCD display and the climate control
screen will change.
Air intake control
This is used to select the outside (fresh)
air position or recirculated air position.
To change the air intake control position,
push the control button.
Recirculated air position
With the recirculated air
position selected, air from the
passenger compartment will
be drawn through the heating
system and heated or cooled
according to the function
selected.
Outside (fresh) air position
With the outside (fresh) air
position selected, air enters
the vehicle from outside and
is heated or cooled according
to the function selected.
Information
Using the system primarily in Fresh mode
and Recirculation mode only when needed
is recommended for best results.
Prolonged operation of the heater in
Recirculation mode and without the A/C
ON can cause fogging of the windshield.
In addition, prolonged use of the A/C
ON in Recirculation mode may result in
excessively dry, dehumidified air in the
cabin.
WARNING
• Continued use of the climate control
system operation in Recirculation
mode for a prolonged period of
time may cause drowsiness to the
occupants in the cabin. This may lead
to loss of vehicle control which may
lead to an accident.
• Continued use of the climate control
system operation in Recirculation
mode with the A/C OFF may allow
humidity to increase inside the
cabin. This may cause condensation
to accumulate on the windshield and
obscure visibility.
• Do not sleep in your vehicle or
remain parked in your vehicle with
the windows up and either the
heater or the air conditioning ON for
prolonged periods of time. Doing so
may increase the levels of carbon
dioxide in the cabin which may lead
to serious injury or death.

Convenient Features5-134
Fan speed control
ODN8H059319ODN8H059319
The fan speed can be set to the desired
speed by using the fan speed control
toggle switch.
More air is delivered with higher fan
speeds.
Pressing the OFF button turns off the fan.
Information
For better sound quality, fan speed may
automatically slow down for a couple
of minutes when you activate voice
recognition or hands free.
NOTICE
Operating the fan when the ignition
switch is in the ON position could cause
the battery to discharge. Operate the
fan when the engine is running.
Air conditioning
ODN8059121ODN8059121
Push the A/C button to manually turn
the air conditioning system on (indicator
light will illuminate).
Push the button again to turn the air
conditioning system off.
OFF mode
ODN8059123ODN8059123
Push the OFF button of the front to
turn off the air climate control system.
However, you can still operate the mode
and air intake buttons as long as the
ignition switch is in the ON position.

Convenient Features5-138
WINDSHIELD DEFROSTING AND DEFOGGING
WARNING
Windshield heating
Do not use the
or position
during cooling operation in extremely
humid weather. The difference between
the temperature of the outside air and
that of the windshield could cause the
outer surface of the windshield to fog
up, causing loss of visibility could cause
an accident resulting in serious injury
or death. In this case, set the mode
selection knob or button to the

position and fan speed control knob or
button to a lower speed.
• For maximum defrost performance, set the temperature control knob
to the highest temperature setting
(rotated all the way to the right) and
the fan speed control to the highest
setting.
• If warm air to the floor is desired while defrosting or defogging, set the mode
to the floor-defrost position.
• Before driving, clear all snow and ice from the windshield, rear window,
side view mirrors, and all side
windows.
• Clear all snow and ice from the hood and air inlet in the cowl grill
to improve heater and defroster
efficiency and to reduce the
probability of fogging up the inside of
the windshield.
NOTICE
If you start the vehicle when the
weather is cold, more adequate way to
heat the cabin is described below.
1. Turn off or lower the blower, right after engine starting, because
engine temperature is still low and
the air flow is cold.
2. After few minutes of engine warm up, turn the blower to low to medium
speed and set the temperature
control to Hot.
Manual Climate Control System
To defog inside windshield
ODN8A059125ODN8A059125
[A] : Type A, [B] : Type B
1. Select any fan speed except “0” position.
2. Select desired temperature.
3. Select the
or position.
4. Fresh mode air will be selected automatically. Additionally, the
air conditioning (if equipped) will
automatically operate if the mode is
selected to the
position.
If the air conditioning and fresh mode
are not selected automatically, press the
corresponding button manually.

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To defrost outside windshield
ODN8A059126ODN8A059126
[A] : Type A, [B] : Type B
1. Set the fan speed to the highest setting (knob rotated all the way to
the right).
2. Set the temperature control to the highest temperature setting.
3. Select the
position.
4. Fresh mode air and air conditioning (if equipped) will be selected
automatically.
Automatic Climate Control
System
To defog inside windshield
ODN8059124ODN8059124
1. Select desired fan speed.
2. Select desired temperature.
3. Press the defroster button (
).
4. The air-conditioning will turn on according to the detected ambient
temperature, fresh mode and
higher fan speed will be selected
automatically.
If the air-conditioning, fresh mode
and higher fan speed are not selected
automatically, adjust the corresponding
button or knob manually.
If the
position is selected, lower fan
speed is controlled to higher fan speed.

Convenient Features5-140
To defrost outside windshield
ODN8059127ODN8059127
1. Set fan speed to the highest position.
2. Set temperature to the extreme hot (HI) position.
3. Press the defroster button (
).
4. The air-conditioning will turn on according to the detected ambient
temperature and fresh mode will be
selected automatically.
If the
position is selected, lower fan
speed is controlled to higher fan speed.
Defogging Logic
To reduce the probability of fogging
up the inside of the windshield, the air
intake or air conditioning are controlled
automatically according to certain
conditions such as
or position.
To cancel or return the defogging logic,
do the following.
Manual climate control system
1. Turn the ignition switch to the ON position.
2. Select defroster mode (
).
3. Press the air intake control button at least 5 times within 3 seconds. The
process should be completed within
10 seconds after the defroster mode
(
) is selected.
The LED indicator on the air intake
button will blink 3 times to indicate that
the defogging logic has been disabled.
Repeat the steps again to re-enable the
defogging logic.
If the battery has been discharged or
disconnected, it resets to the defog logic
status.
Automatic climate control system
1. Turn the ignition switch to the ON position.
2. Press the defroster button (
).
3. While pressing the air conditioning button (A/C), press the air intake
control button at least 5 times within 3
seconds.
The automatic climate control
information screen will blink 3 times to
indicate that the defogging logic has
been disabled.
Repeat the steps again to re-enable the
defogging logic.
If the battery has been discharged or
disconnected, it resets to the defog logic
status.

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Auto Defogging System (Only
for Automatic Climate Control
System, if equipped)
ODN8059215ODN8059215
Auto defogging helps reduce the
possibility of fogging up the inside of the
windshield by automatically sensing the
moisture on inside the windshield.
The auto defogging system operates
when the heater or air conditioning is on.
$872
When the Auto Defogging
System operates, the
indicator will illuminate.
If a high amount of humidity is detected
in the vehicle, the Auto Defogging
System will be enabled.
The following steps will be performed
automatically:
Step 1) The A/C button will turn ON.
Step 2) The air intake control will change to Fresh mode under low outside
temperature.
Step 3) The mode will be changed to defrost to direct airflow to the
windshield.
Step 4) The fan speed will be increased.
To cancel or reset the Auto Defogging
System
Press the front windshield defroster
butt
on for 3 seconds when the ignition
switch is in the ON position.
When the Auto Defogging System is
canceled, defrost button indicator will
blink 3 times.
When the Auto Defogging System is
reset, defrost button indicator will blink 6
times without a signal.
Information
• When the air conditioning is turned on by Auto defogging system, if you
try to turn off the air conditioning,
the indicator will blink 3 times and
the air conditioning will not be
turned off.
• To maintain the effectiveness and efficiency of the Auto Defogging
System, do not select Recirculation
mode while the system is operating.
• When the Auto Defogging System is operating, the fan speed adjustment
knob, the temperature adjustment
knob, and the air intake control
button are all disabled.
NOTICE
Do not remove the sensor cover located
on the upper end of the driver side
windshield glass.
Damage to system parts could occur
and may not be covered by your vehicle
warranty.

Convenient Features5-142
DefrosterNOTICE
To prevent damage to the conductors
bonded to the inside surface of the rear
window, never use sharp instruments or
window cleaners containing abrasives
to clean the window.
Information
If you want to defrost and defog the
front windshield, refer to “Windshield
Defrosting and Defogging” in this chapter.
Rear window defroster
ODN8059284LODN8059284L
Manual climate control systemManual climate control system
Automatic climate control systemAutomatic climate control system
ODN8059283LODN8059283L
The defroster heats the window to
remove frost, fog and thin ice from the
interior and exterior of the rear window,
while engine is running. • To activate the rear window defroster,
press the rear window defroster
button located in the center facia
switch panel. The indicator on the rear
window defroster button illuminates
when the defroster is ON.
• To turn off the defroster, press the rear window defroster button again.
Information
• If there is heavy accumulation of snow on the rear window, brush it off before
operating the rear defroster.
• The rear window defroster automatically turns off after
approximately 20 minutes or when the
ignition switch is in the LOCK/OFF
position.
Outside mirror defroster
(if equipped)
If your vehicle is equipped with the
outside mirror defrosters, they will
operate at the same time you turn on the
rear window defroster.

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CLIMATE CONTROL ADDITIONAL FEATURES
Sunroof Inside Air Recirculation
(if equipped)
When the sunroof is opened, outside
(fresh) air will be automatically selected.
At this time, if you press the air intake
control button, recirculated air position
will be selected but will change back
to outside (fresh) air after 3 minutes.
When the sunroof is closed, the air
intake position will return to the original
position that was selected.
Automatic Ventilation
The system automatically selects the
fresh mode when the climate control
system operates Floor-Level or Bi-Level
for more than 5 minutes and the outdoor
temperature is under 59°F (15°C).