2023 HYUNDAI I20 catalytic converter

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Petrol engine
Unleaded
For the optimal vehicle performance, we recommend you use unleaded petrol which
has an octane rating of RON (Research Octane Number) 95 / AKI (Anti Knock Index)
91 or higher. You may use unleaded petrol with an octane rating of RON 91-94 / AKI
87-90 but it may result in slight performance reduction of the vehicle. (Do not use
methanol blended fuels)
Your new vehicle is designed to obtain maximum performance with UNLEADED FUEL,
as well as minimise exhaust emissions and spark plug fouling.
CAUTION
NEVER USE LEADED FUEL. The use of leaded fuel is detrimental to the catalytic
converter and will damage the engine control system’s oxygen sensor and affect
emission control.
Never add any fuel system cleaning agents to the fuel tank other than what has
been specified (We recommend that you consult a HYUNDAI authorised repairer for
details.)
WARNING

[Do not “top off” after the nozzle automatically shuts off when refuelling.

[Always check that the fuel cap is installed securely to prevent fuel spillage in the
event of an accident.

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Electric Power Steering
(EPS) warning light
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[When you set the ignition switch or
the Engine Start/Stop button to the
ON position.
- The electric powering steering
warning light illuminates for about 3
seconds and then goes off.

[Whenever there is a malfunction with
the electric power steering.
If this occurs, we recommend that
you have the vehicle inspected by a
HYUNDAI authorised repairer.
Malfunction Indicator
Lamp (MIL)
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[When you set the ignition switch or
the Engine Start/Stop button to the
ON position.
- The malfunction indicator light
illuminates for about 3 seconds and
then goes off.

[Whenever there is a malfunction with
either the emission control system or
the engine or the vehicle powertrain.
If this occurs, we recommend that
you have the vehicle inspected by a
HYUNDAI authorised repairer.
NOTICE

[Driving with the Malfunction
Indicator Lamp (MIL) on may cause
damage to the emission control
system which could affect drivability
and/or fuel economy.

[If the enhanced engine protection
system becomes activated due to
lack of engine oil, engine power
will be limited. If such condition
continues repeatedly, the
Malfunction Indicator Lamp will
illuminate.
CAUTION
If the Malfunction Indicator Lamp
(MIL) illuminates, potential catalytic
converter damage is possible which
could result in loss of engine power.
In this case, we recommend that
you have the vehicle inspected by a
HYUNDAI authorised repairer as soon
as possible.
Charging system
warning light
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When there is a malfunction with either
the alternator or electrical charging
system.

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Low Fuel Level Warning
Light
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When the fuel tank is nearly empty.Add
fuel as soon as possible.
NOTICE
Driving with the Low Fuel Level
warning light on or with the fuel level
below “0” can cause the engine to
misfire and damage the catalytic
converter (if equipped).
Master warning light
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When there is a malfunction in operation
in any of the following systems:
- Forward Collision-Avoidance Assist
malfunction (if equipped)
- Forward Collision-Avoidance Assist
radar blocked (if equipped)
- Blind-Spot Collision Warning
malfunction (if equipped)
- Blind-Spot Collision Warning radar
blocked (if equipped)
- LED headlamp malfunction
(if equipped)
- High Beam Assist malfunction
(if equipped)
- Smart Cruise Control malfunction
(if equipped)
- Smart Cruise Control radar blocked
(if equipped)
- Tyre Pressure Monitoring System
(TPMS) malfunction
To identify the details of the warning,
look at the LCD display.
Low Tyre Pressure
Warning Light
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[When you set the ignition switch or
Engine Start/Stop button to the ON
position.
- It illuminates for approximately 3
seconds and then goes off.

[When one or more of your tyres
are significantly underinflated (The
location of the underinflated tyres are
displayed on the LCD display).
For more details, refer to “Tyre Pressure
Monitoring System (TPMS)” section in
chapter 8.
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[When there is a malfunction with the
TPMS.
In this case, we recommend that
you have the vehicle inspected by a
HYUNDAI authorised repairer as soon
as possible.
For more details, refer to “Tyre Pressure
Monitoring System (TPMS)” section in
chapter 8.
WARNING
Safe Stopping

[The TPMS cannot alert you to severe
and sudden tyre damage caused by
external factors.

[If you notice any vehicle instability,
immediately take your foot off the
accelerator pedal, apply the brakes
gradually with light force, and slowly
move to a safe position off the road.

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If the engine doesn’t turn over
or turns over slowly

[Be sure the shift lever is in N (Neutral)
or P (Park) if it is an automatic
transmission/dual clutch transmission
vehicle. The engine starts only when
the shift lever is in N (Neutral) or P
(Park).

[Check the battery connections to be
sure they are clean and tight.

[Turn on the interior light. If the light
dims or goes out when you operate
the starter, the battery is drained.
Do not push or pull the vehicle to start
it. This could cause damage to your
vehicle. See instructions for “Jump
Starting” provided in this chapter.
CAUTION
Push or pull starting the vehicle may
cause the catalytic converter to
overload which can lead to damage to
the emission control system.
If the engine turns over normally
but doesn’t start

[Check the fuel level and add fuel if
necessary.
If the engine still does not start, we
recommend that you call a HYUNDAI
authorised repairer for assistance.
IF THE ENGINE WILL NOT START

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3. Exhaust emission control
system
The Exhaust Emission Control System is
a highly effective system which controls
exhaust emissions whilst maintaining
good vehicle performance.
Engine exhaust gas precautions
(carbon monoxide)

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other exhaust fumes. Therefore, if
you smell exhaust fumes of any kind
inside your vehicle, have it inspected
and repaired immediately. If you ever
suspect exhaust fumes are coming
into your vehicle, drive it only with
all the windows fully open. Have
your vehicle checked and repaired
immediately.
WARNING
Engine exhaust gases contain carbon
monoxide (CO). Though colourless and
odourless, it is dangerous and could be
lethal if inhaled. Follow the instructions
following to avoid CO poisoning.

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or closed areas (such as garages) any
more than what is necessary to move
the vehicle in or out of the area.

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open area for more than a short time
with the engine running, adjust the
ventilation system (as needed) to draw
outside air into the vehicle.

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vehicle for any extended time with the
engine running.

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start, excessive attempts to restart
the engine may cause damage to the
emission control system.
Operating precautions for catalytic
converters (if equipped)
WARNING

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flammable items under your vehicle.
Do not park, idle, or drive the vehicle
over or near flammable objects, such
as dry grass, paper, leaves, etc.

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system are very hot whilst the engine
is running or immediately after the
engine is turned off. Keep away from
the exhaust system and catalytic
converter as you may get burned.
Also, do not remove the heat sink
around the exhaust system, do not
seal the bottom of the vehicle and
do not coat the vehicle for corrosion
control. It may present a fire risk
under certain conditions.
Your vehicle is equipped with a catalytic
converter emission control device.
Therefore, the following precautions
must be observed:

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engines.

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there are signs of engine malfunction,
such as misfire or a noticeable loss of
performance.

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Examples of misuse are coasting with
the engine off and descending steep
grades in gear with the engine off.

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speed for extended periods (5 minutes
or more).

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part of the engine or emission control
system. We recommend that all
inspections and adjustments are
made by a HYUNDAI authorised
repairer.

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Maintenance

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level. If you run out of petrol, it could
cause the engine to misfire and result
in excessive loading of the catalytic
converter.
Failure to observe these precautions
could result in damage to the catalytic
converter and to your vehicle.
Additionally, such actions could void
your warranties.
Petrol Particulate Filter (GPF)
(if equipped)
The Petrol Particulate Filter (GPF) system
removes the soot in the exhaust gas.
The GPF system automatically burns
(or oxidizes) the accumulated soot in
accordance with driving situations,
unlike a disposable air filter.
In other words, the accumulated soot is
automatically purged out by the engine
control system and by the high exhaust-
gas temperature at normal/ high driving
speeds.
However, when the vehicle is continually
driven at repeated short distances or
driven at low speed for a long time,
the accumulated soot may not be
automatically removed because of low
exhaust gas temperature. In this case,
the accumulated soot may reach a
certain amount regardless of the soot
oxidization process, then the GPF lamp
will illuminate.
The Petrol Particulate Filter (GPF) Lamp
stops illuminating, when the driving
speed exceeds 80 km/h (50 mph) with
the engine at 1,500- 4,000 rpm and the
gear in the 3rd position or above for
approximately 30 minutes.When the GPF lamp starts to blink or
the waning message “Check exhaust
system” pops up even though the
vehicle was driven as mentioned above,
we recommend that you have the
GPF system checked by a HYUNDAI
authorised repairer.
With the GPF lamp blinking for an
extended period of time, it may damage
the GPF system and lower the fuel
economy.
WARNING
Petrol Fuel
(if equipped with GPF)
We recommend you to use only the
regulated petrol fuels, when your
vehicle is equipped with the GPF
system.
When you use other petrol fuels which
contain unspecified additives, they
may damage the GPF system and cause
exhaust emission problems.