heater HYUNDAI I20 2020 Owners Manual

6-60
Convenient features
Air conditioning system operation tips
• If the vehicle has been parked in direct
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
recirculation mode to fresh mode.
• 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 windows
and sunroof closed.
• During air conditioning system
operation, you may occasionally
notice a slight change in engine speed
as the air conditioning compressor
cycles. This is a normal system
operation characteristic.
• Use the air conditioning system
every month only for a few minutes
to ensure maximum system
performance.
• When using the air conditioning
system, you may notice clear water
dripping (or even puddling) on the
ground under the passenger side of
the vehicle. This is a normal system
operation characteristic.
• If you operate the 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 button to
the
position and set the fan speed
control knob to the lowest speed
setting.
System maintenance
Climate control air filter
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[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.

6-67
06
Air intake control
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The air intake control button is used to
select either Fresh mode (outside air) or
Recirculation mode (cabin air).
Recirculated air position
The indicator light on the
button illuminates when
the recirculated air
position is selected.
With the recirculated air
position selected, air from
the passenger
compartment will be
drawn through the climate
control system and heated
or cooled according to the
function selected.
Outside (fresh) air position
The indicator light on the
button will turn off when
the outside (fresh) air
position is selected.
With the outside (fresh) air
position selected, air
enters the vehicle from
outside and is heated or
cooled according to the
function selected.
i Information
Operating the system primarily in Fresh
mode is recommended. Use Recirculation
mode temporarily only when needed.
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 and may promote formation of
musty vent odor due to stagnant air.
WARNING
• 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 resulting in an
accident. Set the air intake control to
the outside (fresh) mode 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 air
conditioning or heating system on. It
may cause serious harm or death due
to a drop in the oxygen level and/or
body temperature.

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.

6-74
Convenient features
To defrost outside windshield
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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)
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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.

6-81
06
NOTICE
To prevent damage to the Power outlet:
• Use the power outlet only when the
engine is running and remove the
accessory plug after use. Using the
accessory plug for prolonged periods
of time with the engine off could
cause the battery to discharge.
• Only use 12V electric accessories
which are less than 180W (Watt) in
electric capacity.
• Adjust the air-conditioner or heater
to the lowest operating level when
using the power outlet.
• Close the cover when not in use.
• Some electronic devices can cause
electronic interference when plugged
into a vehicle’s power outlet. These
devices may cause excessive audio
static and malfunctions in other
electronic systems or devices used in
your vehicle.
• Push the plug in as far as it will go.
If good contact is not made, the
plug may overheat or the internal
temperature fuse may open.
• Plug in battery equipped electrical/
electronic devices with reverse
current protection. The current
from the battery may flow into the
vehicle’s electrical/electronic system
and cause system malfunction.
USB charger (if equipped)
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„„FrontFront
„„RearRear
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The USB charger is designed to recharge
batteries of small size electrical devices
using a USB cable.
The electrical devices can be recharged
when the Engine Start/ Stop button is in
the ACC, ON or START position.
The battery charging state may be
monitored on the electrical device.
Disconnect the USB cable from the USB
port after use.
• A smart phone or a tablet PC may
get warmer during the re-charging
process. It does not indicate any
malfunction with the charging system.
• A smart phone or a tablet PC, which
adopts a different re-charging
method, may not be properly
re-charged. In this case, use an
exclusive charger of your device.
• The charging terminal is only to
recharge a device. Do not use the
charging terminal either to turn ON
an audio or to play media on the
infotainment system.

10-9
10
While operating your vehicle:
• Note any changes in the sound of the
exhaust or any smell of exhaust fumes
in the vehicle.
• Check for vibrations in the steering
wheel. Notice any increased steering
effort or looseness in the steering
wheel, or change in its straight-ahead
position.
• Notice if your vehicle constantly turns
slightly or “pulls” to one side when
traveling on smooth, level road.
• When stopping, listen and check for
unusual sounds, pulling to one side,
increased brake pedal travel or “hard-
to-push” brake pedal.
• If any slipping or changes in the
operation of your transmission occurs,
check the transmission fluid level.
• Check the parking brake.
• Check for fluid leaks under your
vehicle (water dripping from the air
conditioning system during or after
use is normal).
At least monthly:
• Check the coolant level in the engine
coolant reservoir.
• Check the operation of all exterior
lights, including the stoplights, turn
signals and hazard warning flashers.
• Check the inflation pressures of all
tires including the spare for tires that
are worn, show uneven wear, or are
damaged.
• Check for loose wheel lug nuts.
At least twice a year
(i.e., every Spring and Fall):
• Check the radiator, heater and air
conditioning hoses for leaks or
damage.
• Check the windshield washer spray
and wiper operation. Clean wiper
blades with clean cloth dampened
with washer fluid.
• Check the headlight alignment.
• Check the muffler, exhaust pipes,
shields and clamps.
• Check the lap/shoulder belts for wear
and function.
At least once a year:
• Clean the body and door drain holes.
• Lubricate the door hinges and checks,
and hood hinges.
• Lubricate the door and hood locks and
latches.
• Lubricate the door rubber
weatherstrips.
• Check the air conditioning system.
• Inspect and lubricate Automated
manual transmission linkage and
controls.
• Clean the battery and terminals.
• Check the brake/clutch fluid level.

10-32
Maintenance
The high-pressure cooling system
has a reservoir filled with year-round
antifreeze coolant. The reservoir is filled
at the factory.
Check the antifreeze protection and
coolant level at least once a year, at the
beginning of the winter season, and
before traveling to a colder climate.
NOTICE
• Do not drive with no engine coolant.
It may cause water pump failure and
engine seizure, etc.
• When the engine overheats from
low engine coolant, suddenly adding
engine coolant may cause cracks
in the engine. To prevent damage,
add engine coolant slowly in small
quantities.
Checking the coolant level
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„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen or
deteriorated hoses.
The coolant level should be filled
between F (Full) and L (Low) marked on
the side of the coolant reservoir when
the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water.
Bring the level to F (Full), but do
not overfill. If frequent additions are
required, we recommend that the
system be inspected by an authorized
HYUNDAI dealer.
ENGINE COOLANT

10-75
10
Engine Compartment Fuse Panel (1.5 WGT)
Fuse Name SymbolFuse
RatingCircuit Protected
GLOW100A Glow Relay Unit
ALT
180A Alternator, Multi Fuse - F3, Fuse - F32/F33/F34/F35
MDPS
80A MDPS Unit
ECU1
30A E/R Junction Block (RLY.1)
IG1
30A[With Smart Key] PDM Relay Box (IG1, ACC Relay)
[W/O Smart Key] Ignition Switch
FUEL PUMP
20A E/R Junction Block (RLY.6)
ECU2
15A ECU
A/CON 1
10A E/R Junction Block (RLY.3)
FUEL HEATER
30A E/R Junction Block (RLY.14)
BATT4
40AICU Junction Block
(Power Window Relay, Fuse - F3/F10/F11)
BATT1
50A ICU Junction Block (IPS1, IPS3, IPS5, IPS7, IPS8, IPS11)
BATT3
40AICU Junction Block (Fuse - F8/F21/F25/F29,
Long Term Load Latch Relay)
HORN
15A E/R Junction Block (RLY.11, RLY.12)
AMS
10A Battery Sensor
BATT2
50A ICU Junction Block (IPS2, IPS4, IPS6, IPS9, IPS10)
IG2
40AE/R Junction Block (RLY.9).
[With Smart Key] PDM Relay Box (IG2 Relay)
[W/O Smart Key] Ignition Switch