2018 Hyundai Sonata heating

2-20
Safety system of your vehicle
While the engine is running, push
either of the switches to warm the
driver's seat or passenger's seat. During mild weather or under condi-
tions where the operation of the seat
warmer is not needed, keep the
switches in the OFF position.
Each time you push the switch, the
temperature setting of the seat
changes as follows :
The seat warmer defaults to the OFF position whenever the ignition
switch is in the ON position.
Information
With the seat warmer switch in the
ON position, the heating system turns
off or on automatically depending on
seat temperature.
Air ventilation seats (if equipped)
The air ventilation seats are provided
to cool the front seats by blowing air
through small vent holes on the sur-
face of the seat cushions and seat-
backs.
When the operation of the air ventila-
tion seats are not needed, keep the
switches in the OFF position.
i
OFF→ HIGH( )→ MIDDLE( )→ LOW( )
→
OFF → HIGH( ) → LOW( )
→
-Rear
-Front
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OLF037084
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■Front
■Rear

Warning and indicator lights ..............................3-90
Warning Lights .................................................................3-90
Indicator Lights ................................................................3-97
Light .....................................................................3-1\
02
Exterior Lights ...............................................................3-102
Smart High Beam ..........................................................3-104
Welcome System ...........................................................3-110
Interior Lights ................................................................3-111
Wipers and washers ..........................................3-115
Windshield Wipers ........................................................3-115
Windshield Washers .....................................................3-116
Driver assist system ..........................................3-117
Rear View Camera ........................................................3-117
Rear Parking Assist System .......................................3-118
Defroster .............................................................3-121
Rear Window Defroster ..............................................3-121
Manual climate control system........................3-122
Heating and Air Conditioning .....................................3-123
System Operation .........................................................3-128
System Maintenance....................................................3-130
Automatic climate control system ...................3-132
Automatic Heating and Air Conditioning.................3-133
Manual heating and Air Conditioning ......................3-134
System Operation .........................................................3-140
System Maintenance....................................................3-142
Windshield defrosting and defogging...............3-144
Manual Climate Control System ................................3-144
Automatic Climate Control System ...........................3-145
Defogging logic..............................................................3-146
Climate control additional features ...................3-147
Automatic Ventilation ...................................................3-147
Sunroof Inside Air Recirculation ...............................3-147
Storage compartment ........................................3-148
Center Console Storage ..............................................3-148
Glove Box ........................................................................\
3-148
Sunglass Holder.............................................................3-149
Multi box ........................................................................\
.3-149
3

3-67
Convenient features of your vehicle
3
Do not operate the engine within
the tachometer's RED ZONE. This
may cause severe engine damage.
Engine Coolant TemperatureGauge
This gauge indicates the tempera-
ture of the engine coolant when the
ignition switch or Engine Start/Stop
button is ON. If the gauge pointer moves
beyond the normal range area
toward the "H" position, it indi-
cates overheating that may dam-
age the engine.
Do not continue driving with an
overheated engine. If your vehicle
overheats, refer to "If the Engine
Overheats" in chapter 6.
NOTICENOTICE
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■
Type A, B
■ Type C, D
Never remove the radiator cap
when the engine is hot. The
engine coolant is under pres-
sure and could severely burn.
Wait until the engine is cool
before adding coolant to the
reservoir.
WARNING

3-82
Sunroof Open (if equipped)
This warning message illuminates if
you turn off the engine when the sun-
roof is open.
Turn on FUSE SWITCH
This warning message illuminatesif the fuse switch located on the
fuse box under the steering wheel
is OFF.
It means that you should turn the fuse switch on.
For more details, refer to "Fuses"
in chapter 7.
Low Tire Pressure
This warning message illuminates if
the tire pressure is low with the igni-
tion switch or the Engine/Start Button
in ON position.
For more information, refer to
"Tire Pressure Monitoring System
(TPMS)" in chapter 6.
Low Washer Fluid
This warning message illuminates if the washer fluid level in the reser-
voir is nearly empty.
It means that you should refill the washer fluid.
Low Fuel
This warning message illuminatesif the fuel tank is nearly empty.
- When the low fuel level warninglight is illuminates.
- When the trip computer displays "--- mile (or km)" as distance to
empty.
Add fuel as soon as possible.
Engine has overheated
This warning message illuminates when the engine coolant tempera-
ture is above 248°F (120°C). This
means that the engine is overheat-
ed and may be damaged.
If your vehicle is overheated, refer
to "Overheating" in chapter 6.
Convenient features of your vehicle
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3-123
Convenient features of your vehicle
3
Heating and Air Conditioning
1. Start the engine.
2. Set the mode to the desired posi-tion.
To improve the effectiveness of heating and cooling :
- Heating:
- Cooling:
3. Set the temperature control to the desired position.
4. Set the air intake control to the outside (fresh) air or recirculated
air position.
5. Set the fan speed control to the desired speed.
6. If air conditioning is desired, turn the air conditioning system on.
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*
*
* : if equipped

3-127
Convenient features of your vehicle
3
Fan speed control
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.
Air conditioning
Press the A/C button to turn the sys-
tem on (indicator light will illuminate)
and off.
OLF047212OLF047213
Continued use of the climate
control system operation in
the recirculated air position
can cause drowsiness or
sleepiness, that may cause
loss of vehicle control result-
ing in an accident. Set the air
intake control to the outside
(fresh) air position as much as
possible while driving.
Continued use of the climate
control system operation in
the recirculated air position
(without the air conditioning
selected) may allow humidity
to increase inside the vehicle
which may fog the glass and
obscure visibility.
Do not sleep in a vehicle with
the air conditioning or heating
system on. It may cause seri-
ous injury or death due to a
drop in the oxygen level
and/or body temperature.
WARNING

3-128
Convenient features of your vehicle
System Operation
Ventilation
1. Select the Face Level mode.
2. Set the air intake control to theoutside (fresh) air position.
3. Set the temperature control to the desired position.
4. Set the fan speed control to the desired speed.
Heating
1. Select the Floor Level mode.
2. Set the air intake control to theoutside (fresh) air position.
3. Set the temperature control to the desired position.
4. Set the fan speed control to the desired speed.
5. If dehumidified heating is desired, turn the air conditioning system on.
If the windshield fogs up, select the
Floor & Defrost mode or press
the Front Defrost mode.
Operation Tips
To keep dust or unpleasant fumes from entering the car through the
ventilation system, temporarily set
the air intake control to the recircu-
lated air position. Return the con-
trol to the fresh air position when
the irritation has passed. This will
help keep the driver alert and com-
fortable.
To prevent the inside of the wind- shield from fogging, set the air
intake control to the fresh air posi-
tion and fan speed to the desired
position, turn on the air conditioning
system, and adjust the temperature
control to desired temperature.
Air conditioning
All HYUNDAI Air Conditioning
Systems are filled with environmen-
tally friendly R-1234yf refrigerant.
1. Start the engine.
2. Push the air conditioning button.
3. Set the mode to the Face Level mode.
4. Set the air intake control to the recirculated air position. However,
prolonged operation of the recircu-
lated air position will excessively
dry the air. In this case, change the
air position.
5. Adjust the fan speed control and temperature control to maintain
maximum comfort.
When maximum cooling is desired,
set the temperature control to the
extreme left position then set the fan
speed control to the highest speed.

3-129
Convenient features of your vehicle
3
When using the air conditioning
system, monitor the engine tem-
perature gauge closely while driv-
ing up hills or in heavy traffic
when outside temperatures are
high. Air conditioning system
operation can cause engine over-
heating. Continue to use the blow-
er fan, but turn the air condition-
ing system off if the engine tem-
perature gauge indicates engine
overheating.
Air conditioning system operation
tips
If the vehicle has been parked indirect sunlight during hot weather,
open the windows for a short time
to let the hot air inside the vehicle
escape.
After sufficient cooling has been achieved, switch back from the
recirculated air to the fresh outside
air position.
To help reduce moisture inside of the windows on rainy or humid
days, decrease the humidity inside
the vehicle by operating the air
conditioning system with the win-
dows and sunroof closed.
Use the air conditioning system every month only for a few minutes
to ensure maximum system per-
formance. If you operate air conditioner
excessively, 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. In this case, set the
mode selection knob or button to
the position and fan speed
control to the lower speed.
NOTICE