check engine light HYUNDAI I20 2021 Owners Manual

5-10
Instrument cluster
If the brake fluid level in the reser-
voir is low:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. With the engine stopped, check the
brake fluid level immediately and add
fluid as required (For more details,
refer to “Brake Fluid” in chapter 9).
Then check all brake components for
fluid leaks. If any leak on brake system
is still found, the warning light remains
on, or the brakes do not operate
properly, do not drive the vehicle.
In this case, we recommend that
you have the vehicle towed to an
authorized HYUNDAI dealer and
inspected.
Dual-diagonal braking system
Your vehicle is equipped with dual-
diagonal braking systems. This means
you still have braking on two wheels
even if one of the dual systems should
fail.
With only one of the dual systems
working, more than normal pedal travel
and greater pedal pressure are required
to stop the vehicle.
Also, the vehicle will not stop in as short
a distance with only a portion of the
brake system working.
If the brakes fail while you are driving,
shift to a lower gear for additional
engine braking and stop the vehicle as
soon as it is safe to do so.
WARNING
Parking Brake & Brake Fluid Warning
Light
Driving the vehicle with a warning light
ON is dangerous. If the Parking Brake &
Brake Fluid Warning Light illuminates
with the parking brake released, it
indicates that the brake fluid level is
low.
In this case, we recommend that you
have the vehicle inspected by an
authorized HYUNDAI dealer.
Anti-lock Brake System
(ABS) Warning Light
This warning light illuminates:
• Once 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 there is a malfunction with
the ABS (The normal braking system
will still be operational without the
assistance of the anti-lock brake
system).
In this case, we recommend that you
have the vehicle inspected by an
authorized HYUNDAI dealer.

5-12
Instrument cluster
Charging System
Warning Light
This warning light illuminates:
• Once you set the ignition switch or
Engine Start/Stop button to the ON
position.
- It remains on until the engine is
started.
• When there is a malfunction with
either the alternator or electrical
charging system.
If there is a malfunction with either
the alternator or electrical charging
system:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Turn the engine off and check the
alternator drive belt for looseness or
breakage.
If the belt is adjusted properly, there
may be a problem in the electrical
charging system.
In this case, we recommend that you
have the vehicle inspected by an
authorized HYUNDAI dealer as soon as
possible.
Engine Oil Pressure
Warning Light
This warning light illuminates:
• Once you set the ignition switch or
Engine Start/Stop button to the ON
position.
- It remains on until the engine is
started.
• When the engine oil pressure is low.
If the engine oil pressure is low:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Turn the engine off and check the
engine oil level (For more details, refer
to “Engine Oil” in chapter 9). If the
level is low, add oil as required.
If the warning light remains on after
adding oil or if oil is not available, we
recommend that you have the vehicle
inspected by an authorized HYUNDAI
dealer as soon as possible.

5-13
05
NOTICE
- Engine Oil Pressure Warning Light
• If the engine does not stop
immediately after the Engine Oil
Pressure Warning Light is illuminated,
severe damage could result.
• If the warning light stays on while the
engine is running, it indicates that
there may be serious engine damage
or malfunction. In this case,
1. Stop the vehicle as soon as it is safe
to do so.
2. Turn off the engine and check the
oil level. If the oil level is low, fill
the engine oil to the proper level.
3. Start the engine again. If the
warning light stays on after the
engine is started, turn the engine
off immediately. In this case, we
recommend that you have the
vehicle inspected by an authorized
HYUNDAI dealer.
Low Fuel Level Warning
Light
This warning light illuminates:
When the fuel tank is nearly empty.
If the fuel tank is nearly empty, add fuel
as soon as possible.
NOTICE
- Low Fuel Level
Driving with the Low Fuel Level
warning light on or with the fuel level
below “E (Empty)” can cause the
engine to misfire and damage the
catalytic converter (if equipped).

5-14
Instrument cluster
Fuel Filter Warning Light
(for diesel engine)
This warning light illuminates:
• When water has accumulated inside
the fuel filter.
In this case, remove the water from
the fuel filter.
For more details, refer to “Fuel Filter” in
chapter 9.
NOTICE
• When the Fuel Filter Warning Light
illuminates, engine power (vehicle
speed & idle speed) may decrease.
• If you keep driving with the warning
light on, engine parts (injector,
common rail, high pressure fuel
pump) may be damaged. If this
occurs, we recommend that you
have the vehicle inspected by an
authorized HYUNDAI dealer as soon
as possible.
Exhaust System (DPF)
Warning Light (for diesel
engine, if equipped)
This warning light illuminates:
• When there is a malfunction with the
Diesel Particulate Filter (DPF) system.
When this warning light illuminates, it
may turn off after driving the vehicle:
- at more than 60 km/h (37 mph), or
- above 2nd gear with 1500 ~ 2500
engine rpm for a certain time (for
about 25 minutes).
If this warning light blinks in spite of
the procedure, we recommend that you
have the DPF system checked by an
authorized HYUNDAI dealer.
NOTICE
If you continue to drive with the DPF
warning light blinking for a long time,
the DPF system can be damaged and
fuel consumption can worsen.

5-18
Instrument cluster
Master Warning Light
(if equipped)
This indicator light illuminates :
• When the remaining mileage or time
is 0 on the “Service Interval” in the
cluster.
If the service interval setting is reset,
the master warning light turns off.

KEY OUT Indicator Light
(if equipped)
KEY
OUT
When the Engine Start/Stop button is
in the ACC or ON position, if any door is
open, the system checks for the smart
key.
This indicator light blinks:
When the smart key is not in the vehicle
and any door is open with the ignition
switch or Engine Start/Stop button in the
ACC or ON position.
- At this time, if you close all doors,
the chime will also sound for
approximately 5 seconds.
- The indicator will go off while the
vehicle is moving.
Low Tire Pressure
Warning Light
(if equipped)
This warning light illuminates:
• 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 tires
are significantly underinflated (The
location of the underinflated tires are
displayed on the LCD display).
For more details, refer to “Tire Pressure
Monitoring System (TPMS)” section in
chapter 8.
This warning light remains on after
blinking for approximately 60 seconds
or repeatedly blinks on and off at
approximately 3 second intervals:
• When there is a malfunction with the
TPMS.
In this case, we recommend that you
have the vehicle inspected by an
authorized HYUNDAI dealer as soon as
possible.
For more details, refer to “Tire Pressure
Monitoring System (TPMS)” section in
chapter 8.
WARNING
Safe Stopping
• The TPMS cannot alert you to severe
and sudden tire 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.

5-20
Instrument cluster
Shift to N to start engine
(for smart key system and
Automatic transmission/Dual clutch
transmission) / iMT (intelligent
manual transmission))
This warning message is displayed if
you try to start the engine with the shift
button not in the N (Neutral) position.
i Information
You can start the engine with the shift
lever in the N (Neutral) position.
Check BRAKE SWITCH fuse (for
smart key system and Automatic
transmission/Dual clutch
transmission)
This warning message is displayed if the
brake switch fuse is disconnected.
You need to replace the fuse with a new
one. If that is not possible, you can start
the engine by pressing the Engine Start/
Stop button for 10 seconds in the ACC
position.
Lights mode
OIK047163LOIK047163L
This indicator displays which exterior
light is selected using the lighting
control.

5-22
Instrument cluster
Low engine oil (if equipped)
This warning message is displayed when
the engine oil level should be checked.
If this warning message is displayed,
check the engine oil level as soon as
possible and add engine oil as required.
Slowly pour the recommended oil little
by little into a funnel.
Use only the specified engine oil. (Refer
to "Recommended lubricants and
capacities" section in chapter 2.)
Do not overfill the engine oil. Make sure
the oil level is not above F (Full) mark on
the dipstick.
NOTICE
If the message is displayed
continuously after adding the engine
oil and travelling approximately
50~100 km after the engine warms up,
we recommend that the system be
checked by an authorized HYUNDAI
dealer.
Engine has overheated
(if equipped)
This warning message is displayed
when the engine coolant temperature
is above 120°C (248°F). This means that
the engine is overheated and may be
damaged.
If your vehicle is overheated, refer to
“Overheating” section in chapter 8.
Check headlight (if equipped)
This warning message is displayed if the
headlamps are not operating properly.
In addition, if a specific lamp(turn signal
lamp etc.) is not operating properly, the
warning message according to a specific
lamp (turn signal lamp etc.) is displayed.
A corresponding bulb may need to be
replaced.
Make sure to replace the burned out
bulb with a new one of the same
wattage rating.
Check brake light (if equipped)
This warning message is displayed if the
stop lamps are not operating properly. A
lamp may need to be replaced.
Make sure to replace the burned out
bulb with a new one of the same
wattage rating.

6-4
Convenient features
ACCESSING YOUR VEHICLE
Remote key (if equipped)
OIB034040OIB034040
Your HYUNDAI uses a remote key, which
you can use to lock or unlock a door
(and tailgate) and even start the engine.
1. Door Lock
2. Door Unlock
3. Tailgate Unlock
Locking
To lock :
1. Close all doors, engine hood and
tailgate.
2. Press the Door Lock button (1) on the
remote key.
3. The doors will lock. The hazard
warning lights will blink once.
4. Make sure the doors are locked by
checking the position of the door lock
button inside the vehicle.
WARNING
Do not leave the keys in your
vehicle with unsupervised children.
Unattended children could place the
key in the ignition switch and may
operate power windows or other
controls, or even make the vehicle
move, which could result in serious
injury or death.
Unlocking
To unlock:
1. Press the Door Unlock button (2) on
the remote key.
2. The doors will unlock. The hazard
warning lights will blink two times.
i Information
After unlocking the doors, the doors will
lock automatically after 30 seconds unless
a door is opened.
Tailgate unlocking
To unlock:
1. Press the Tailgate Unlock button (3)
on the remote key for more than one
second.
2. The hazard warning lights will blink
two times. Once the tailgate/trunk is
opened and then closed, the tailgate/
trunk will lock automatically.
i Information
• After unlocking the tailgate, the tailgate
will lock automatically.
• The word “HOLD” is written on the
button to inform you that you must
press and hold the button for more than
one second.

6-8
Convenient features
Locking
OBI3050001OBI3050001
To lock :
1. Close all doors, engine hood and
tailgate.
2. Either press the door handle button or
press the Door Lock button (1) on the
smart key.
3. The hazard warning lights will blink
once.
4. Make sure the doors are locked by
checking the position of the door lock
button inside the vehicle.
i Information
The door handle button will only operate
when the smart key is within 0.7~1 m
(28~40 in.) from the outside door handle. Even though you press the outside
door handle button, the doors will not
lock and the chime will sound for three
seconds if any of the following occur:
• The Smart Key is in the vehicle.
• The Engine Start/Stop button is in ACC
or ON position.
• Any door except the tailgate/trunk is
open.
WARNING
Do not leave the Smart Key in your
vehicle with unsupervised children.
Unattended children could press the
Engine Start/Stop button and may
operate power windows or other
controls, or even make the vehicle
move, which could result in serious
injury or death.

6-20
Convenient features
Electric power steering (EPS)
The system assists you with steering
the vehicle. If the engine is off or if
the power steering system becomes
inoperative, the vehicle may still be
steered, but it will require increased
steering effort.
Also, the steering effort becomes
heavier as the vehicle’s speed increases
and becomes lighter as the vehicle’s
speed decreases for better control of the
steering wheel.
Should you notice any change in the
effort required to steer during normal
vehicle operation, we recommend that
the system be checked by an authorized
HYUNDAI dealer.
NOTICE
If the Electric Power Steering System
does not operate normally, the
warning light (
) will illuminate on
the instrument cluster. The steering
wheel may become difficult to control
or operate. Take your vehicle to an
authorized HYUNDAI dealer and
have the system checked as soon as
possible.
i Information
The following symptoms may occur
during normal vehicle operation:
• The steering effort may be high
immediately after placing the ignition
switch in the ON position.
This happens as the system performs
the EPS system diagnostics. When
the diagnostics is completed, the
steering wheel will return to its normal
condition.
• When the battery voltage is low, you
might have to put more steering effort.
However, it is a temporary condition so
that it will return to normal condition
after charging the battery.
• A click noise may be heard from the
EPS relay after the ignition switch
is placed to the ON or LOCK/OFF
position.
• Motor noise may be heard when the
vehicle is at stop or at a low driving
speed.
• When you operate the steering wheel
in low temperature, abnormal noise
may occur. If temperature rises, the
noise will disappear. This is a normal
condition.
WARNING
Never adjust the steering wheel while
driving. You may lose steering control
and cause severe personal injury, death
or accidents.
STEERING WHEEL