2021 HYUNDAI I20 air conditioning

6-71
06
System maintenance
Climate control air filter
OIK047401LOIK047401L
[A] : Outside air, [B] : Recirculated air
[C] : Climate control air filter, [D] : Blower
[E] : Evaporator core, [F] : Heater core
This filter is installed behind the glove
box. It filters the dust or other pollutants
that enter the vehicle through the
heating and air conditioning system.
We recommend that the climate control
air filter be replaced by an authorized
HYUNDAI dealer according to the
maintenance schedule. If the vehicle is
being driven in severe conditions such
as dusty or rough roads, more frequent
climate control filter inspections and
changes are required.
If the air flow rate suddenly decreases,
we recommend the system be checked
at an authorized HYUNDAI dealer.
i Information
• Replace the filter according to the
Maintenance Schedule.
• If the car is being driven in severe
conditions such as dusty, rough roads,
more frequent climate control air filter
inspections and changes are required.
• When the air flow rate suddenly
decreases, we recommend that the
system be checked by an authorized
HYUNDAI dealer.
Checking the amount of air
conditioner refrigerant and
compressor lubricant
When the amount of refrigerant is low,
the performance of the air conditioning
is reduced. Overfilling also has a bad
influence on the air conditioning system.
Therefore, if abnormal operation is
found, we recommend that the system
be inspected by an authorized HYUNDAI
dealer.
NOTICE
It is important that the correct type and
amount of oil and refrigerant is used.
Otherwise, damage to the compressor
and abnormal system operation may
occur. To prevent damage, the air
conditioning system in your vehicle
should only be serviced by trained and
certified technicians.
WARNING
Vehicles equipped with R-134a
Since the refrigerant is
operated at very high
pressure, the air
conditioning system should
only be serviced by trained
and certified technicians.
All refrigerants should be reclaimed
with proper equipment.
Venting refrigerants directly to the
atmosphere is harmful to individuals
and environment. Failure to heed these
warnings can lead to serious injuries.

6-72
Convenient features
WARNING
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. Set the mode selection to the
position and fan speed control to a
lower speed.
• For maximum defrosting, set the
temperature control to the extreme
right/hot position and the fan speed
control to the highest speed.
• 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,
outside rear view mirrors, and all side
windows.
• Clear all snow and ice from the hood
and air inlet at the buttom of the
windshield.
i Information
If the engine temperature is still cold after
starting, then a brief engine warm up
period may be required for the vented air
flow to become warm or hot.
Manual climate control system
To defog inside windshield
OBI3050111OBI3050111
1. Select desired fan speed.
2. Select desired temperature.
3. Select the
or position.
4. The outside (fresh) air will be selected
automatically. Additionally, the
air conditioning will automatically
operate if the mode is selected to the
or position.
If the air conditioning and outside (fresh)
mode are not selected automatically,
press the corresponding button
manually.
WINDSHIELD DEFROSTING AND DEFOGGING

6-73
06
To defrost outside windshield
OBI3050112OBI3050112
1. Set the fan speed to the highest
(extreme right) position.
2. Set the temperature to the extreme
hot position.
3. Select the
position.
4. The outside (fresh) mode and
air conditioning will be selected
automatically.
Automatic climate control
system
To defog inside windshield
OBI3050105OBI3050105
1. Select desired blower 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
blower speed will be selected
automatically.
If the air-conditioning, fresh mode and
higher blower speed are not selected
automatically, adjust the corresponding
button or knob manually.
If the
position is selected, lower
blower speed is controlled to higher
blower speed.

6-74
Convenient features
To defrost outside windshield
OBI3050118OBI3050118
1. Set blower 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
blower speed is controlled to higher
blower speed.
Auto defogging system (only
for automatic climate control
system, if equipped)
OBC3050124OBC3050124
Auto defogging helps reduce the
possibility of fogging up the inside of the
windscreen by automatically sensing the
moisture on inside the windscreen.
The auto defogging system operates
when the heater or air conditioning is on.
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
windscreen.
Step 4) The blower speed will be
increased.

6-75
06
To cancel or reset the Auto Defogging
System
Press the front windscreen defroster
button for 3 seconds when the ignition
switch is in the ON position.
When the Auto Defogging System is
cancelled, defrost button indicator will
blink 3 times.
When the Auto Defogging System is
reset, defrost button indicator will blink
6 times without a signal.
i 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 whilst
the system is operating.
When the Auto Defogging System is
operating, the blower speed adjustment
knob, the temperature adjustment knob,
and the air intake control button are all
disabled.
NOTICE
Do not remove the sensor cover
located at the top of the driver side
windscreen glass.
Damage to system parts could occur
and may not be covered by your vehicle
warranty.
Defroster
NOTICE
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.
i Information
If you want to defrost and defog the
front windshield, refer to “Windshield
Defrosting and Defogging” in this chapter.

6-78
Convenient features
Glove box
OBI3050061OBI3050061
To open the glove box, pull the lever and
the glove box will automatically open.
Close the glove box after use.
WARNING
ALWAYS close the glove box door after
use.
An open glove box door can cause
serious injury to the passenger in an
accident, even if the passenger is
wearing a seat belt.
Cool box (if equipped)
OBI3050060OBI3050060
You can keep beverage cans or other
items cool in the glove box.
1. Turn on the air conditioning.
2. Turn the open/close switch of the vent
installed in the glove box to the open
position.
3. When the cool box is not used, turn
the switch to the closed position.
WARNING
Do not put perishable food in the cool
box because it may not maintain the
necessary consistent temperature to
keep the food fresh.
i Information
• If the vent is blocked by items in the
coolbox, cooling will be reduced.
• If the climate control system
temperature control is in the warm
or hot position, Cold air only will flow
into the glove box.

9-5
09
CAUTION
• Improper jump starting procedure
can result in battery explosion and
acid burn hazard.
• Loosely connected battery cables
could damage the electronic control
units.
• To disconnect battery terminals
wait for at least 2 minutes to allow
discharge of high voltage or it could
lead to personal injury.
• While disconnecting, always
disconnect the -VE terminal first and
while connecting, always connect the
-VE terminal last.
NOTICE
To prevent damage to your vehicle:
• Only use a 12-volt power supply
(battery or jumper system) to jump
start your vehicle.
• Do not attempt to jump start your
vehicle by push-starting.
i Information
Pb
An inappropriately disposed
battery can be harmful to the
environment and human health.
Dispose the battery according to
your local law(s) or regulation.
Jump starting procedure
1. Position the vehicles close enough
that the jumper cables will reach, but
do not allow the vehicles to touch.
2. Avoid fans or any moving parts in the
engine compartment at all times, even
when the vehicles are turned off.
3. Turn off all electrical devices such
as radios, lights, air conditioning,
etc. Put the vehicles in N (Neutral,
for Automated manual transmission
vehicle) or neutral (for manual
transmission vehicle), and set the
parking brakes. Turn both vehicles
OFF.
OBI3090046LOBI3090046L
(-)
(+)
Booster BatteryBooster Battery
(-)
(+)
Jumper TerminalJumper Terminal
Jumper CablesJumper Cables
4. Connect the jumper cables in
the exact sequence shown in the
illustration. First connect one jumper
cable to the red, positive (+) jumper
terminal of your vehicle (1).
5. Connect the other end of the jumper
cable to the red, positive (+) battery/
jumper terminal of the assisting
vehicle (2).
6. Connect the second jumper cable to
the black, negative (-) battery/chassis
ground of the assisting vehicle (3).

9-7
09
If your temperature gauge indicates
overheating, you experience a loss of
power, or hear loud pinging or knocking,
the engine may be overheating. If this
happens, you should:
1. Pull off the road and stop as soon as it
is safe to do so.
2. Place the shift lever in N (Neutral,
for Automated manual transmission
vehicle) or neutral (for manual
transmission vehicle) and set the
parking brake. If the air conditioning is
ON, turn it OFF.
3. If engine coolant is running out under
the vehicle or steam is coming out
from the hood, stop the engine. Do
not open the hood until the coolant
has stopped running or the steaming
has stopped. If there is no visible
loss of engine coolant and no steam,
leave the engine running and check
to be sure the engine cooling fan is
operating. If the fan is not running,
turn the engine off.
WARNING
While the engine is running,
keep hands, clothing and
tools away from the moving
parts such as the cooling
fan and drive belt to
prevent serious injury.4. Check for coolant leaking from the
radiator, hoses or under the vehicle. (If
the air conditioning had been in use, it
is normal for cold water to be draining
from it when you stop.)
5. If engine coolant is leaking out,
stop the engine immediately and
we recommend that you call an
authorized HYUNDAI dealer for
assistance.
WARNING
NEVER remove the radiator
cap or the drain plug while
the engine and radiator are
hot. Hot coolant and steam
may blow out under
pressure, causing serious injury.
Turn the engine off and wait until the
engine cools down. Use extreme care
when removing the radiator cap. Wrap
a thick towel around it, and turn it
counterclockwise slowly to the first
stop. Step back while the pressure
is released from the cooling system.
When you are sure all the pressure
has been released, press down on the
cap, using a thick towel, and continue
turning counterclockwise to remove it.
IF THE ENGINE OVERHEATS