2023 HYUNDAI I20 maintenance schedule

01
Use of MTBE
HYUNDAI recommends avoiding fuels containing MTBE (Methyl Tertiary Butyl Ether)
over 15.0% vol. (Oxygen Content 2.7% weight) in your vehicle.
Fuel containing MTBE over 15.0% vol. (Oxygen Content 2.7% weight) may reduce
vehicle performance and produce vapour lock or hard starting.
CAUTION
Your New Vehicle Limited Warranty may not cover damage to the fuel system and
any performance problems that are caused by the use of fuels containing methanol
or fuels containing MTBE (Methyl Tertiary Butyl Ether) over 15.0% vol. (Oxygen
Content 2.7% weight.)
Do not use methanol
Fuels containing methanol (wood alcohol) should not be used in your vehicle. This
type of fuel can reduce vehicle performance and damage components of the fuel
system, engine control system and emission control system.
Fuel Additives
HYUNDAI recommends that you use unleaded petrol which has an octane rating of
RON (Research Octane Number) 95 / AKI (Anti Knock Index) 91 or higher (for Europe)
or Octane Rating of RON (Research Octane Number) 91 / AKI (Anti-Knock Index) 87 or
higher (except Europe).
For customers who do not use good quality petrols including fuel additives
regularly, and have problems starting or the engine does not run smoothly, one
bottle of additive added to the fuel tank according to the maintenance schedule is
recommended.
Additives are available from your HYUNDAI authorised repairer along with information
on how to use them. Do not mix other additives.
Operation in foreign countries
If you are going to drive your vehicle in another country, be sure to:

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Control your speed
Excessive speed is a major factor in
crash injuries and deaths. Generally, the
higher the speed, the greater the risk,
but serious injuries can also occur at
lower speeds. Never drive faster than is
safe for current conditions, regardless of
the maximum speed posted.
Keep your vehicle in safe
condition
Having a tyre blowout or a mechanical
failure can be extremely hazardous. To
reduce the possibility of such problems,
check your tyre pressures and condition
frequently, and perform all regularly
scheduled maintenance.

5-64
Convenient features
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 a HYUNDAI
authorised repairer 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 a HYUNDAI authorised repairer.
i Information

6-63
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When installing tyre chains, follow the
manufacturer’s instructions and mount
them as tightly possible. Drive slowly
(less than 20 mph (30 km/h)) with
chains installed. If you hear the chains
contacting the body or chassis, stop and
tighten them. If they still make contact,
slow down until the noise stops. Remove
the tyre chains as soon as you begin
driving on cleared roads.
When mounting snow chains, park
the vehicle on level ground away from
traffic. Turn on the vehicle Hazard
Warning Flasher and place a triangular
emergency warning device behind the
vehicle (if available). Always place the
vehicle in P (Park), apply the parking
brake and turn off the engine before
installing snow chains.
NOTICE
When using tyre chains:

[Wrong size chains or improperly
installed chains can damage your
vehicle’s brake lines, suspension,
body and wheels.

[Use SAE “S” class or wire chains.

[If you hear noise caused by chains
contacting the body, retighten the
chain to prevent contact with the
vehicle body.

[To prevent body damage, retighten
the chains after driving 0.3~0.6 miles
(0.5~1.0 km).

[Do not use tyre chains on vehicles
equipped with aluminium wheels. If
unavoidable, use a wire type chain.

[Use wire chains less than 0.47 in (12
mm) wide to prevent damage to the
chain’s connection.
Winter Precautions
Use high quality ethylene glycol coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because it
helps prevent corrosion in the cooling
system, lubricates the water pump and
prevents freezing. Be sure to replace or
replenish your coolant in accordance
with the maintenance schedule. Before
winter, have your coolant tested to
assure that its freezing point is sufficient
for the temperatures anticipated during
the winter.
Check battery and cables
Winter temperatures affect battery
performance. Inspect the battery and
cables, as specified in the chapter
9. The battery charging level can be
checked by a HYUNDAI authorised
repairer or in a service station.
Change to “winter weight” oil if
necessary
In some regions during winter, it is
recommended to use the “winter
weight” oil with lower viscosity. For
further information, refer to the chapter
2. When you are not sure about a type
of winter weight oil, consult a HYUNDAI
authorised repairer.

6-72
Driving your vehicle
Ready to leave after parking on a
hill
1. With the shift lever to P (Park, for
Automatic transmission/Dual clutch
transmission vehicle) or neutral (for
Manual transmission vehicle), apply
your brakes and hold the brake pedal
down whilst you:

V Start your engine;

V Shift into gear; and

V Release the parking brake.
2. Slowly remove your foot from the
brake pedal.
3. Drive slowly until the trailer is clear of
the chocks.
4. Stop and have someone pick up and
store the chocks.
Maintenance when towing a
trailer
Your vehicle will need service more
often when you regularly pull a trailer.
Important items to pay particular
attention to include engine oil,
automatic transmission/dual clutch
transmission fluid, axle lubricant and
cooling system fluid. Brake condition
is another important item to frequently
check. If you’re trailering, it’s a good
idea to review these items before
you start your trip. Don’t forget to
also maintain your trailer and towbar.
Follow the maintenance schedule that
accompanied your trailer and check it
periodically. Preferably, conduct the
check at the start of each day’s driving.
Most importantly, all towbar nuts and
bolts should be tight.
NOTICE
To prevent vehicle damage:

V Due to higher load during trailer
usage, overheating might occur on
hot days or during uphill driving. If
the coolant gauge indicates over-
heating, switch off the air conditioner
and stop the vehicle in a safe area to
cool down the engine.

V When towing check Automatic
transmission/Dual clutch
transmission fluid more frequently.

V If your vehicle is not equipped with
an air conditioner, you should install
a condenser fan to improve engine
performance when towing a trailer.

8-44
Emergency situations
WARNING
Emergency power supply of the Pan-
European eCall system from the battery

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battery supplies power during 1 hour
in case the main power source of the
vehicle is cut off due to the collision
during the emergency situations.

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battery should be replaced every 3
years. For more information, refer to
“Maintenance Schedule” in chapter
9.
LED illumination in red (system
malfunction)
If the red LED illuminates in normal
driving conditions, this can indicate
malfunction of the Pan-European
eCall system. We recommend that you
have the Pan-European eCall system
checked by a HYUNDAI authorised
repairer as soon as possible. Otherwise
correct operation of the Pan-European
eCall system device, installed in your
vehicle is not guaranteed. Owner
of the vehicle incurs liability for
consequences, occurred as a result
of nonobservance of conditions,
mentioned above. Arbitrary Removal or Modification
The Pan-European eCall system calls
emergency services for assistance.
Thus, any arbitrary removal or changes
to the Pan-European eCall system
settings may affect your driving safety.
Also, it may even make an erroneous
emergency call to the Public Safety
Answering Point (PSAP). Thereby, we
kindly ask you not to make any changes
by yourself or by the third parties in the
settings of the equipment of the Pan-
European eCall system, installed in your
vehicle.

Engine compartment ...................................................................................... 9-3
Maintenance services .....................................................................................9-6
Owner’s responsibility .............................................................................................. 9-6
Owner maintenance precautions............................................................................. 9-6
Owner maintenance ....................................................................................... 9-7Owner maintenance schedule ..................................................................................9-7
Scheduled maintenance services ..................................................................9-9
Explanation of scheduled maintenance items ........................................... 9-10
Engine oil ........................................................................................................9-13
Checking the engine oil level .................................................................................. 9-13
Checking the engine oil and filter ........................................................................... 9-15
Engine coolant ...............................................................................................9-16Checking the coolant level ...................................................................................... 9-16
Changing the engine coolant .................................................................................. 9-19
Brake/clutch fluid ......................................................................................... 9-20Checking the brake/clutch fluid level .................................................................... 9-20
Intelligent Manual Transmission (iMT) System actuator fluid ................... 9-22Checking the IMT system actuator fluid level ....................................................... 9-22
Washer fluid .................................................................................................. 9-23Checking the washer fluid level ............................................................................. 9-23
Checking the parking brake ................................................................................... 9-23
Parking brake ................................................................................................ 9-23
Air cleaner ..................................................................................................... 9-24
Filter replacement ................................................................................................... 9-24
Climate control air filter................................................................................ 9-26Filter inspection ....................................................................................................... 9-26
Filter replacement ................................................................................................... 9-26
Wiper blades ................................................................................................. 9-27Blade inspection .......................................................................................................9-27
Blade replacement ...................................................................................................9-27
9. Maintenance
9

9-6
Maintenance
You should exercise the utmost care
to prevent damage to your vehicle and
injury to yourself whenever performing
any maintenance or inspection
procedures.
We recommend you have your vehicle
maintained and repaired by a HYUNDAI
authorised repairer. A HYUNDAI
authorised repairer meets HYUNDAI’s
high service quality standards and
receives technical support from
HYUNDAI in order to provide you with a
high level of service satisfaction.
Owner’s responsibility
Maintenance service and record
retention are the owner’s responsibility.
You should retain documents that show
proper maintenance has been performed
on your vehicle in accordance with
the scheduled maintenance service
charts shown on the following pages.
You need this information to establish
your compliance with the servicing
and maintenance requirements of your
vehicle warranties.
Detailed warranty information is
provided in your Service Passport.
Repairs and adjustments required as
a result of improper maintenance or a
lack of required maintenance are not
covered.
Owner maintenance
precautions
Inadequate, incomplete or insufficient
servicing may result in operational
problems with your vehicle that could
lead to vehicle damage, an accident, or
personal injury. This chapter provides
instructions only for the maintenance
items that are easy to perform.
Your vehicle should not be modified
in any way. Such modifications may
adversely affect the performance, safety
or durability of your vehicle and may, in
addition, violate conditions of the limited
warranties covering the vehicle.
NOTICE
Improper owner maintenance during
the warranty period may affect
warranty coverage. For details, read
the separate Service Passport provided
with the vehicle. If you’re unsure
about any servicing or maintenance
procedure, we recommend that the
system be serviced by a HYUNDAI
authorised repairer.
MAINTENANCE SERVICES