maintenance schedule HYUNDAI I20 2023 User Guide

9-10
Maintenance
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in the
maintenance schedule. If the vehicle
is being driven in severe conditions,
more frequent oil and filter changes are
required.
Drive belts
Inspect all drive belts for evidence
of cuts, cracks, excessive wear or oil
saturation and replace if necessary.
Drive belts should be checked
periodically for proper tension and
adjusted as necessary.
CAUTION
When you are inspecting the belt, place
the ignition switch to the lock/off or
ACC position.
Fuel filter (Except Europe)
A clogged filter can limit the speed
at which the vehicle may be driven,
damage the emission system and cause
multiple issues such as hard starting.
If an excessive amount of foreign
matter accumulates in the fuel tank, the
filter may require replacement more
frequently.
After installing a new filter, run the
engine for several minutes, and
check for leaks at the connections.
We recommend that the fuel filter be
replaced by a HYUNDAI authorised
repairer.
Fuel filter (For Europe)
This petrol powered vehicle is equipped
with a lifetime fuel filter that is
integrated with the fuel tank. Regular
maintenance or replacement is not
needed; however, the quality of fuel
used may impact the frequency of
maintenance needed. If there are any
fuel related problems like fuel flow
restriction, surging, loss of power,
hard starting problem etc, fuel filter
inspection or replacement may be
needed. We recommend the fuel filter
be inspected or replaced by a HYUNDAI
authorised repairer.
Fuel lines, fuel hoses and
connections
Check the fuel lines, fuel hoses and
connections for leakage and damage.
We recommend that the fuel lines, fuel
hoses and connections be replaced by a
HYUNDAI authorised repairer.
Vapour hose and fuel filler cap
The vapour hose and fuel filler cap
should be inspected at those intervals
specified in the maintenance schedule.
Make sure that a new vapour hose or
fuel filler cap is correctly replaced.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS

9-11
09
Vacuum crankcase ventilation
hoses (if equipped)
Inspect the surface of hoses for
evidence of heat and/or mechanical
damage. Hard and brittle rubber,
cracking, tears, cuts, abrasions, and
excessive swelling indicate deterioration.
Particular attention should be paid to
examine those hose surfaces nearest to
high heat sources, such as the exhaust
manifold.
Inspect the hose routing to assure that
the hoses do not come in contact with
any heat source, sharp edges or moving
component which might cause heat
damage or mechanical wear. Inspect
all hose connections, such as clamps
and couplings, to make sure they are
secure, and that no leaks are present.
Hoses should be replaced immediately if
there is any evidence of deterioration or
damage.
Air cleaner filter
We recommend that the air cleaner filter
be replaced by a HYUNDAI authorised
repairer.
Spark plugs
(for petrol engine)
Make sure to install new spark plugs of
the correct heat range.
When assembling parts, be sure to
wipe out foreign substances inside
and outside of the boot bottom of the
ignition coil and the insulator of the
spark plug with a soft cloth to prevent
contamination of the spark plug
insulator.
WARNING
Do not disconnect and inspect spark
plugs when the engine is hot. You may
burn yourself.
Cooling system
Check the cooling system parts, such
as radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
Engine coolant
The coolant should be changed at the
intervals specified in the maintenance
schedule.
Manual transmission fluid/iMT
system actuator fluid
(if equipped)
Inspect the Manual transmission fluid/
iMT system actuator fluid according to
the maintenance schedule.
Automatic transmission fluid
(if equipped)
Automatic transmission fluid should
not be checked under normal usage
conditions.
We recommend that the automatic
transmission fluid is changed by a
HYUNDAI authorised repairer according
to the maintenance schedule.
i Information
$XWRPDWLFWUDQVPLVVLRQIOXLGFRORXULVUHG
ZKHQQHZ
$VWKHYHKLFOHLVGULYHQWKHDXWRPDWLF
WUDQVPLVVLRQIOXLGZLOOEHJLQWRORRN
GDUNHU
7KLVLVDQRUPDOFRQGLWLRQ,WGRHVQRW
QHHGWREHUHSODFHGEDVHGRQWKHFRORXU
FKDQJH

9-12
Maintenance
Dual clutch transmission fluid
(if equipped)
Inspect the dual clutch transmission
fluid according to the maintenance
schedule.
%UDNHKRVHVDQGOLQHV
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.
%UDNHFOXWFKIOXLGLIHTXLSSHG
Check brake/clutch fluid level in the
brake fluid reservoir. The level should
be between “MIN” (Minimum) and
“MAX” (Maximum) marks on the side
of the reservoir. Use only hydraulic
brake/clutch fluid conforming to DOT 4
specification.
Parking brake
Inspect the parking brake system
including the parking brake lever and
cables.
Rear brake drums and linings
(if equipped)
Check the rear brake drums and linings
for scoring, burning, leaking fluid,
broken parts, and excessive wear.
%UDNHSDGVFDOLSHUVDQGURWRUV
Check the pads for excessive wear, discs
for run out and wear, and calipers for
fluid leakage.
For more information on checking the
pads or lining wear limit, refer to the
HYUNDAI web site.
(http://service.hyundai-motor.com)
Suspension mounting bolts
Check the suspension connections for
looseness or damage. Retighten to the
specified torque.
Steering gear box, linkage &
boots/lower arm ball joint
With the vehicle stopped and engine
off, check for excessive free-play in the
steering wheel.
Check the linkage for bends or damage.
Check the dust boots and ball joints
for deterioration, cracks, or damage.
Replace any damaged parts.
Drive shafts and boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged parts
and, if necessary, repack the grease.
Air conditioning refrigerant/
compressor
Check the air conditioning lines and
connections for leakage and damage.

9-13
09
ENGINE OIL
Engine oil is used for lubricating,
cooling, and operating various hydraulic
components in the engine. Engine oil
consumption whilst driving is normal,
and it is necessary to check and refill the
engine oil regularly. Also, check and refill
the oil level within the recommended
maintenance schedule to prevent
deterioration of oil performance.
Check the engine oil following the below
procedure.
Checking the engine oil level
„Smartstream G 1.0 T-GDi/ Smartstream G1.0 T-GDi (48V) MHEV
OBC3090008
„Smartstream G1.2
OBC3090009
„Petrol 1.4
OBC3090010
1. Follow all of the oil manufacturer’s
precautions.
2. Be sure the vehicle is on the level
ground in P (Park) with the parking
brake set and the wheels blocked.
3. Turn the engine on and warm
the engine up until the coolant
temperature reaches a constant
normal temperature.
4. Turn the engine off, remove the oil
filler cap and pull the dipstick out.
Wait for 15 minutes for the oil to
return to the oil pan.
5. Wipe the dipstick clean and re-insert
it fully.
6. Pull the dipstick out again and check
the level. The level should be between
the F-L line.

9-15
09
Checking the engine oil and
filter

[We recommend that the engine oil
and filter be replaced by a HYUNDAI
authorised repairer.

[If the maintenance schedule to
replace engine oil is exceeded,
the engine oil performance may
deteriorate, and the engine condition
may be affected. Therefore, replace
the engine oil according to the
maintenance schedule.

[To keep the engine in optimal
condition, use the recommended
engine oil and filter. If the
recommended engine oil and filter are
not used replace it according to the
maintenance schedule under severe
usage conditions.

[The purpose of the maintenance
schedule for engine oil replacement
is to prevent oil deterioration and it is
irrelevant to oil consumption. Check
and refill engine oil regularly.
WARNING
Used engine oil may cause irritation or
cancer of the skin if left in contact with
the skin for prolonged periods of time.
Used engine oil contains chemicals
that have caused cancer in laboratory
animals. Always protect your skin
by washing your hands thoroughly
with soap and warm water as soon as
possible after handling used oil.
i Information
:KHQWKHRLOSUHVVXUHLVORZGXHWR
LQVXIILFLHQWHQJLQHRLOWKH(QJLQH2LO
3UHVVXUH
ZDUQLQJOLJKWZLOO
LOOXPLQDWH,QDGGLWLRQWKHHQKDQFHG
HQJLQHSURWHFWLRQV\VWHPZKLFKOLPLWV
WKHHQJLQH

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.

9-26
Maintenance
Filter inspection
The climate control air filter should be
replaced according to the Maintenance
Schedule. If the vehicle is operated in
severely air-polluted cities or on dusty
rough roads for a long period, it should
be inspected more frequently and
replaced earlier. When you replace the
climate control air filter, replace it by
performing the following procedure,
and be careful to avoid damaging other
components.
Replace the filter according to the
Maintenance Schedule.
Filter replacement
OBC3050036R
1. Open the glove box.
OBC3090022R
2. Push in both sides of the glove box as
shown. This will ensure that the glove
box stopper pins will get released
from its holding location allowing the
glove box to hang.
OBC3N090013
3. Press and hold the lock on the left side
of the cover.
4. Pull out the cover.
5. Replace the climate control air filter.
6. Reassemble in the reverse order of
disassembly.
NOTICE
ODH073012
Install a new climate control air filter
in the correct direction with the
arrow symbol () facing downwards,
otherwise, it may be noisy and the
effectiveness of the filter may be
reduced.
CLIMATE CONTROL AIR FILTER

9-88
Maintenance
The emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty
information contained in the Service
Passport in your vehicle.
Your vehicle is equipped with an
emission control system to meet all
emission regulations.
There are three emission control systems
which are as follows.
(1) Crankcase emission control system
(2) Evaporative emission control system
(3) Exhaust emission control system
In order to ensure the proper function
of the emission control systems, it is
recommended that you have your car
inspected and maintained by a HYUNDAI
authorised repairer in accordance
with the maintenance schedule in this
manual.
NOTICE
For the Inspection and Maintenance
Test (with Electronic Stability Control
(ESC) system)

[ 7RSUHYHQWWKHYHKLFOHIURPPLVILULQJ
during dynamometer testing, turn
the Electronic Stability Control
(ESC) system off by pressing the ESC
switch.

[ $IWHUG\QDPRPHWHUWHVWLQJLV
completed, turn the ESC system back
on by pressing the ESC switch again.
1. Crankcase emission control
system
The positive crankcase ventilation
system is employed to prevent air
pollution caused by blow-by gases
being emitted from the crankcase. This
system supplies fresh filtered air to the
crankcase through the air intake hose.
Inside the crankcase, the fresh air mixes
with blow-by gases, which then pass
through the PCV valve into the induction
system.
2. Evaporative emission control
system
The Evaporative Emission Control
System is designed to prevent fuel
vapours from escaping into the
atmosphere.
Canister
Fuel vapours generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapours absorbed in
the canister are drawn into the surge
tank through the purge control solenoid
valve.
Purge Control Solenoid Valve
(PCSV)
The purge control solenoid valve
is controlled by the Engine Control
Module (ECM); when the engine coolant
temperature is low during idling, the
PCSV closes so that evaporated fuel
is not taken into the engine. After
the engine warms up during ordinary
driving, the PCSV opens to introduce
evaporated fuel to the engine.
(0,66,21&21752/6<67(0