2023 HYUNDAI I20 Owners Manual

9-18
Maintenance
WARNING
OBC3090015
1. Check if the radiator cap label is
straight In front.
2. Make sure that the tiny protrusions
inside the radiator cap should be
securely interlocked.
Recommended engine coolant

[When adding coolant, use only
distilled (deionized) water for your
vehicle and never mix hard water in
the coolant filled at the factory. An
incorrect coolant mixture can result
in serious malfunction or engine
damage.

[The engine in your vehicle has
aluminium engine parts and must be
protected by an phosphate based
ethylene-glycol coolant to prevent
corrosion and freezing.

[DO NOT USE alcohol or methanol
coolant or mix them with the specified
coolant.

[Do not use a solution that contains
more than 60% antifreeze or less than
35% antifreeze, which would reduce
the effectiveness of the solution.
For mixture percentage, refer to the
following table.
Ambient
TemperatureMixture Percentage
(volume)
Antifreeze Water
-15°C (5°F)35 65
-25°C (-13°F)40 60
-35°C (-31°F) 50 50
-45°C (-49°F) 60 40
i Information
,ILQGRXEWDERXWWKHPL[UDWLRD
ZDWHUDQGDQWLIUHH]HPL[LVWKH
HDVLHVWWRPL[WRJHWKHUDVLWZLOOEHWKH
VDPHTXDQWLW\RIHDFK,WLVVXLWDEOHWR
XVHIRUPRVWWHPSHUDWXUHUDQJHVRI

9-19
09
Changing the engine coolant
We recommend that coolant be changed
by an authorised HYUNDAI according to
the Maintenance Schedule.
NOTICE
Put a thick cloth or fabric around the
radiator cap before refilling the coolant
in order to prevent the coolant from
overflowing into engine parts such as
alternator.
WARNING
Do not use engine coolant or antifreeze
in the washer fluid reservoir.
Engine coolant can severely obscure
visibility when sprayed on the
windscreen and may cause loss of
vehicle control resulting in an accident.
Engine coolant may also cause damage
to paint and body trim.

9-20
Maintenance
Checking the brake/clutch fluid
level
OBC3090016R
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the left
or right side of the reservoir.
Before removing the reservoir cap
and adding brake/clutch fluid, clean
the area around the reservoir cap
thoroughly to prevent brake/clutch fluid
contamination.
If the level is low, add fluid to the MAX
level. The level will fall with accumulated
mileage. This is a normal condition
associated with the wear of the brake
linings.
If the fluid level is excessively low,
we recommend that the system be
checked by a HYUNDAI authorised
repairer.
i Information
8VHRQO\WKHVSHFLILHGEUDNHFOXWFKIOXLG
5HIHUWR

9-21
09
WARNING
Do not allow brake/clutch fluid to come
in contact with your eyes. If brake/
clutch fluid comes in contact with
your eyes, flush your eyes with clean
water for at least 15 minutes and get
immediate medical attention.
NOTICE

[ 'RQRWDOORZEUDNHFOXWFKIOXLGWR
contact the vehicle’s body paint, as
paint damage will result.

[ %UDNHFOXWFKIOXLGZKLFKKDVEHHQ
exposed to open air for an extended
time should never be used as its
quality cannot be guaranteed. It
should be disposed of properly.

[ 'RQ
TWSXWLQWKHZURQJNLQGRIIOXLG$
few drops of mineral-based oil, such
as engine oil, in your brake/clutch
system can damage system parts.

9-22
Maintenance
,17(//,*(170$18$/75$160,66,21

9-23
09
Checking the washer fluid level
OBC3090017
Check the fluid level in the washer fluid
reservoir and add fluid if necessary.
Plain water may be used if washer fluid
is not available.
However, use washer solvent with
antifreeze characteristics in cold
climates to prevent freezing.
WARNING
To prevent serious injury or death, take
the following safety precautions when
using washer fluid:

[ 'RQRWXVHHQJLQHFRRODQWRU
antifreeze in the washer fluid
reservoir. Engine coolant can
severely obscure visibility when
sprayed on the windscreen and may
cause loss of vehicle control resulting
in an accident or damage to paint
and body trim.

[ 'RQRWDOORZVSDUNVRUIODPHVWR
contact the washer fluid or the
washer fluid reservoir. Washer fluid
may contain alcohol and can be
flammable.

[ 'RQRWGULQNZDVKHUIOXLGDQGDYRLG
contact with skin. Washer fluid is
poisonous to humans and animals.

[ .HHSZDVKHUIOXLGDZD\IURPFKLOGUHQ
and animals.
Checking the parking brake
OBC3060005
Check the stroke of the parking brake by
counting the number of “clicks’’ heard
whilst fully applying it from the released
position.
Also, the parking brake alone should
securely hold the vehicle on a fairly
steep grade. If the stroke is more or
less than specified, we recommend that
the system be inspected by a HYUNDAI
authorised repairer.
Stroke : 5~7 “clicks’’ at a force of 20 kg
(44 lbs, 196 N).
WASHER FLUID PARKING BRAKE

9-24
Maintenance
Filter replacement
OBC3N090008
The air cleaner filter can be cleaned for
inspection using compressed air.
Do not attempt to wash or to rinse it, as
water will damage the filter.
If soiled, the air cleaner filter must be
replaced.
OBC3N090009
OBC3N090010
1. Loosen the air cleaner cover attaching
clips and open the cover.
2. Wipe the inside of the air cleaner.
3. Replace the air cleaner filter.
4. Lock the cover with the cover
attaching clips.
5. Check that the cover is firmly
installed.
AIR CLEANER

9-25
09
i Information
,IWKHYHKLFOHLVRSHUDWHGLQH[WUHPHO\
GXVW\RUVDQG\DUHDVUHSODFHWKHSDUWV
PRUHRIWHQWKDQWKHXVXDOUHFRPPHQGHG
LQWHUYDOV
NOTICE

[ 'RQRWGULYHZLWKWKHDLUFOHDQHUILOWHU
removed. This will result in excessive
engine wear.

[ :KHQUHPRYLQJWKHDLUFOHDQHUILOWHU
be careful that dust or dirt does not
enter the air intake, or damage may
result.

[ 8VH+<81'$,JHQXLQHSDUWVRUWKH
equivalent specified one for your
vehicle. Use of non-genuine parts
could damage the air flow sensor.