engine HYUNDAI ELANTRA HYBRID 2021 Service Manual

04
4-13
AUTO HOLD Indicator Light
(if equipped)
This indicator light illuminates:
• [White] When you activate the auto
hold system by pressing the AUTO
HOLD button.
• [Green] When you stop the vehicle
completely by depressing the brake
pedal with the auto hold system
activated.
• [Yellow] When there is a malfunction
with the auto hold system.
In this case, have the vehicle
inspected by an authorized HYUNDAI
dealer.
For more information, refer to “Auto
Hold” in chapter 6.
Electric Power Steering (EPS)
Warning Light
This warning light illuminates:
• When you place the ignition switch to
the ON position.
-The Electric Power Steering Warning
light illuminates for about 3 seconds
and then goes off.
• Whenever there is a malfunction with
the EPS.
If this occurs, have the vehicle
inspected by an authorized HYUNDAI
dealer.
Malfunction Indicator Lamp
(MIL)
This warning light illuminates:
• When you place the ignition switch 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, have the vehicle
inspected by an authorized HYUNDAI
dealer.
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.
NOTICE
If the Malfunction Indicator Lamp
(MIL) illuminates, potential catalytic
converter damage is possible which
could result in loss of engine power.
In this case, have the vehicle inspected
by an authorized HYUNDAI dealer as
soon as possible.
If the oil pressure lowers due to
insufficient engine oil, etc., the engine
oil pressure warning light turns on
and an enhanced engine protection
system that limits the engine’s power
is activated. After that, engine warning
light turns on if driving repeatedly and
continuously.

Instrument Cluster
4-14
Charging System Warning
Light
When this warning light illuminates while
the engine is running, the battery is not
being charged. Immediately turn OFF
all electrical accessories. Try not to use
electrically operated controls, such as
the power windows. Keep the engine
running.
Have the vehicle inspected by an
authorized HYUNDAI dealer as soon as
possible.
Engine Oil Pressure Warning
Light
This warning light illuminates:
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
information, refer to "Engine Oil" in
chapter 8). If the level is low, add oil
as required.
If the warning light remains on after
adding oil or if oil is not available, have
the vehicle inspected by an authorized
HYUNDAI dealer as soon as possible.
WARNING
When oil pressure is restored to an
optimal level, the oil pressure warning
light and the protection system that
limits engine power will turn off. Even
if the oil pressure returns to normal,
check the engine once again in a safe
place.
NOTICE
• If the engine is not turned OFF
immediately after the Engine
Oil Pressure Warning Light is
illuminated, severe damage could
occur.
• 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 has started, turn the
engine off immediately. In this
case, 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. Add
fuel as soon as possible.
NOTICE
Driving with the Low Fuel Level warning
light on or with the fuel level below "E"
can cause the engine to misfire and
damage the catalytic converter.

Instrument Cluster
4-16
Electronic Stability Control
(ESC) OFF Indicator Light
This indicator light illuminates:
• When you place the ignition switch to
the ON position.
-It illuminates for approximately 3
seconds and then goes off.
• When you deactivate the ESC system
by pressing the ESC OFF button.
For more information, refer to
“Electronic Stability Control (ESC)” in
chapter 6.
AUTO STOP indicator light
(if equipped)
This indicator light illuminates:
When the engine enters the Idle Stop
mode of ISG (Idle Stop and Go) system.
When the engine automatically starts,
the AUTO STOP indicator on the cluster
Illuminates to white.
For more details, refer to "ISG (Idle Stop
and Go) system" section in chapter 6.
Information
When the engine automatically starts
by the ISG system, some warning lights
(ABS, ESC, ESC OFF, EPS or Parking
brake warning light) may turn on for a
few seconds. This happens because of
low battery voltage. It does not mean the
system has malfunctioned.
Immobilizer Indicator Light
This indicator light illuminates:
• When the vehicle detects the
immobilizer in the key with the
ignition switch in the ON position.
-At this time, you can start the engine.
-The indicator light goes off after
starting the engine.
This indicator light blinks:
• When there is a malfunction with the
immobilizer system.
If this occurs, have the vehicle inspected
by an authorized HYUNDAI dealer.

04
4-17
Immobilizer Indicator Light
(with smart key)
(if equipped)
This indicator light illuminates for up to 30 seconds:
When the vehicle detects the smart key
in the vehicle with the Engine Start/Stop
button in the ACC or ON position.
-Once the smart key is detected, you
can start the engine.
-The indicator light goes off after
starting the engine.
This indicator light blinks for a few seconds:
When the smart key is not in the vehicle.
-If the smart key is not detected, you
cannot start the engine.
This indicator light illuminates for 2
seconds and goes off:
If the smart key is in the vehicle and the
Engine Start/Stop button is ON, but the
vehicle cannot detect the smart key.
In this case, have the vehicle inspected
by an authorized HYUNDAI dealer.
This indicator light blinks:
When there is a malfunction with the
immobilizer system.
In this case, have the vehicle inspected
by an authorized HYUNDAI dealer.
Turn Signal Indicator Light
This indicator light blinks:
When you operate the turn signal
indicator stalk.
If any of the following occur, there may be
a malfunction with the turn signal system.
- The turn signal indicator light
illuminates but does not blink
-The turn signal indicator light blinks
rapidly
-The turn signal indicator light does not
illuminate at all
If any of these conditions occur, have
your vehicle inspected by an authorized
HYUNDAI dealer.
For more details, refer to “High Beam
Assist (HBA)” in chapter 5.
Exterior Light Warning Light
(if equipped)
This warning light illuminates:
• When one of the exterior bulbs
(headlamp, DRL, turn signal lamp,
stop lamp, etc) is not operating
properly. One of the bulbs may need
to be replaced.
Information
Make sure to replace the burned out bulb
with a new one of the same wattage rating.

Instrument Cluster
4-18
LED headlight warning light
(if equipped)
This warning light illuminates:
• When you set the Engine Start/Stop
button to the ON position.
-The LED headlight warning light
illuminates for approximately 3
seconds and then goes off.
• Whenever there is a malfunction with
the LED headlight.
If this occurs, we recommend that
you have your vehicle inspected by an
authorized HYUNDAI dealer.
NOTICE
Continuous driving with the LED
Headlight warning light on or blinking
can reduce LED headlight life.
High Beam Indicator Light
This indicator light illuminates:
• When the headlights are on and in the
high beam position.
• When the turn signal lever is pulled
into the Flash-to-Pass position.
Light ON Indicator Light
This indicator light illuminates:
When the tail lights or headlamps are on.
High Beam Assist indicator
light (if equipped)
This indicator light illuminates:
• When the High Beam is on with the
light switch in the AUTO light position.
• If your vehicle detects oncoming or
preceding vehicles, High Beam Assist
system will switch the high beam to
low beam automatically.
For more information, refer to "High
Beam Assist (HBA)" in chapter 5.
Forward Collision-Avoidance
Assist 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 there is a malfunction with
FCA. In this case, have your vehicle
inspected by an authorized dealer of
HYUNDAI.
For more information, refer to "Forward
Collision-Avoidance Assist (FCA)" in
chapter 6.

Instrument Cluster
4-20
LCD Display Messages
Shift to P or N to start engine
(for smart key system)
This warning message is displayed if
you try to start the engine with the shift
button not in the P (Park) or N (Neutral)
position.
Information
You can start the engine with the shift
button in the N (Neutral) position. But, for
your safety, we recommend that you start
the engine with the shift button in the P
(Park) position.
Shift to P (for smart key system and
dual clutch transmission)
This message is displayed if you try to
turn off the engine without the shift
button in P (Park) position.
If this occurs, the Engine Start/Stop
button turns to the ACC position (If you
press the Engine Start/Stop button once
more, it will turn to the ON position).
Low key battery
(for smart key system)
This warning message is displayed if the
battery of the smart key is discharged
while changing the Engine Start/Stop
button to the OFF position.
Press brake pedal to start engine
(for smart key system and dual
clutch transmission)
This warning message is displayed if the
Engine Start/Stop button changes to
the ACC position twice by pressing the
button repeatedly without depressing
the brake pedal.
You can start the vehicle by depressing
the brake pedal and then pressing the
Engine Start/Stop button.
Key not in vehicle
(for smart key system)
This warning message is displayed if the
smart key is not in the vehicle when you
press the Engine Start/Stop button.
When attempting to start the vehicle,
always have the smart key with you.
Key not detected
(for smart key system)
This warning message is displayed if the
smart key is not detected when you press
the Engine Start/Stop button.
Press START button again
(for smart key system)
This message is displayed if you were
unable to start the vehicle when the
Engine Start/Stop button was pressed.
If this occurs, attempt to start the engine
by pressing the Engine Start/Stop button
again.
If the warning message appears each
time you press the Engine Start/Stop
button, have your vehicle inspected by
an authorized HYUNDAI dealer.

04
4-21
12V battery discharging due to
additional electrical devices
This message is displayed if the 12V
battery voltage is weak due to any
non-factory electrical accessories (ex.
dashboard camera) while parking. Be
careful that the battery is not discharged.
If the message appears after removing
the non-factory electrical accessories,
we recommend that you have the vehicle
inspected by an authorized HYUNDAI
dealer.
Press START button with key
(for smart key system)
This warning message is displayed if you
press the Engine Start/Stop button while
the warning message "Key not detected"
is displayed.
At this time, the immobilizer indicator
light blinks.
Check BRAKE SWITCH fuse (for
smart key system and automatic
transmission/intelligent variable
transmission)
This warning message is displayed if the
brake switch fuse is disconnected.
You need to replace the fuse with a new
one before starting the engine.
If that is not possible, you can start the
engine by pressing the Engine Start/
Stop button for 10 seconds in the ACC
position.
Door, Hood, Trunk Open Indicator
OCN7040017
This warning is displayed if any door or
the hood or the liftgate is left open. The
warning will indicate which door is open
in the display.
CAUTION
Before driving the vehicle, you should
confirm that the door/hood/liftgate
is fully closed. Also, check there is no
door/hood/liftgate open warning light
or message displayed on the instrument
cluster.
Sunroof Open (if equipped)
OCN7040018
This warning is displayed if you turn off
the engine when the sunroof is open.
Close the sunroof securely before leaving
your vehicle.

04
4-23
Low fuel
This warning message is displayed if the
fuel tank is almost out of fuel.
When this message is displayed, the low
fuel level warning light in the cluster will
come on.
It is recommended to look for the nearest
fueling station and refuel as soon as
possible.
Engine Overheated (if equipped)
This warning message is displayed
when the engine coolant temperature
is above 248°F (120°C). This means that
the engine is overheated and may be
damaged.
If your vehicle is overheated, refer to
“Overheating” 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 headlight (Low) (if equipped)
This warning message is displayed if
the headlamp (Low) 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 turn signal (if equipped)
This warning message is displayed if the
turn signal lamps are not operat-
ing 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.
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.

Instrument Cluster
4-26
Check Hybrid system
This message is displayed when there
is a problem with the hybrid system.
Refrain from driving when the warning
message is displayed.
If this occurs, we recommend that
you have the vehicle inspected by an
authorized HYUNDAI dealer.
Stop safely and check Hybrid system
This message is displayed when there is
a problem with the hybrid system. The “
” indicator will blink and a warning chime will sound until the problem is
solved. Refrain from driving when the
warning message is displayed.
If this occurs, we recommend that
you have the vehicle inspected by an
authorized HYUNDAI dealer.
Check Hybrid system. Do not start
engine
This message is displayed when the
hybrid battery power (SOC) level is low.
A warning chime will sound until the
problem is solved. Refrain from driving
when the warning message is displayed.
If this occurs, we recommend that
you have the vehicle inspected by an
authorized HYUNDAI dealer.
Stop safely and check power supply
This message is displayed when there is
a problem in the power supply system.
If this occurs, park the vehicle in a safe
location and tow your vehicle to the
nearest authorized HYUNDAI dealer and
have the vehicle inspected.
Check virtual engine sound system
This message is displayed when there is
a problem with the Virtual Engine Sound
System (VESS).
If this occurs, we recommend that
you have the vehicle inspected by an
authorized HYUNDAI dealer.
Refuel to prevent Hybrid battery
damage
This message is displayed when the fuel
tank is nearly empty.
You should refill the fuel tank to prevent
hybrid battery damage.
Refill inverter coolant
This message is displayed when the
inverter coolant is nearly empty.
You should refill the inverter coolant.
Park with engine On to charge
battery
This message is displayed when the
hybrid battery power (SOC) level is low.
If this occurs, park the vehicle in a safe
location and wait until the hybrid battery
is charged.
Start engine to avoid battery
discharge
This message is displayed to inform the
driver the 12V battery may be discharged
if the ignition switch is in ON position
(without the
indicator ON).
Set the vehicle to the ready () mode to prevent the 12V battery from being
discharged.

04
4-33
2. Door
ItemsExplanation
Auto Lock•
Enable on Shift: All doors will be automatically locked if the shift
lever is moved from the P (Park) position to the R (Reverse), N
(Neutral), or D (Drive) position. (Only when the engine is running)
• Enable on Speed: All doors will be automatically locked when the
vehicle speed exceeds 15km/h (9.3mph).
• Disable : The auto door lock operation will be deactivated.
Auto Unlock •
On Shift to P: All doors will be automatically unlocked if the shift
lever is moved to P (Park) position. (Only when the engine is
running)
• On key out/Vehicle Off : All doors will be automatically
unlockedwhen the ignition key is removed from the ignition switch
or the Engine Start/Stop button is set to the OFF position.
• Disable : The auto door unlock operation will be canceled.
Two Press
Unlock
• Off: The two press unlock function will be deactivated. Therefore, all
doors will unlock if the door unlock button is pressed.
• On: Only the driver’s door will unlock if the door unlock button is
pressed. When the door unlock button is pressed again within 4
seconds, the remaining doors will unlock.
Horn
Feedback
To activate or deactivate the horn feedback.
If the horn feedback is activated, after locking the door by pressing the
lock button on the remote key, and pressing it again within 4 seconds,
the horn feedback sound will operate once to indicate that all doors
are locked (if equipped with remote key).
Smart TrunkTo activate or deactivate the smart trunk.
For more details, refer to “Smart trunk” in chapter 5.
3. Lights
Items Explanation
IlluminationTo adjust the illumination level. -
Level 1~20
One Touch
Turn Signal •
Off: The one touch turn signal function will be deactivated.
• 3, 5, 7 Flashes: The turn signal indicator will blink 3, 5, or 7 times
when the turn signal lever is moved slightly.
For more details, refer to “Lighting” in chapter 5.
Headlight Delay• To activate or deactivate the headlamp delay function.
For more details, refer to “Lighting” in chapter 5.
High Beam Assist• To activate or deactivate the High Beam Assist function.
For more details, refer to “High Beam Assist (HBA)” in chapter 5.