engine HYUNDAI ELANTRA HYBRID 2021 User Guide

01
1-13
Warning and Indicator Lights
Ready indicator
This indicator illuminates:
When the vehicle is ready to be driven.
-ON : Normal driving is possible.
-OFF : Normal driving is not possible,
or a problem has occurred.
-Blinking : Emergency driving.
When the ready indicator goes OFF
or blinks, there is a problem with the
system. If this occurs, we recommend
that you have your vehicle inspected by
an authorized HYUNDAI dealer.
EV mode indicator
This indicator illuminates:
When the vehicle is driven by the electric
motor.
Service warning light
This warning light illuminates:
• When you set the ignition switch or
the Engine Start/Stop button to the
ON position.
-The service warning light illuminates
for approximately 3 seconds and
then turns off when all checks have
been performed.
• When there is a problem with the
hybrid vehicle control system or
hardware.
When the warning light illuminates
while driving, or does not go OFF after
starting the vehicle, we recommend that
you have the vehicle inspected by an
authorized HYUNDAI dealer.
Regenerative brake warning
light
(yellow)
This warning light illuminates:
When the regenerative brake does not
operate and the brake does not perform
well. This causes the Brake Warning
light (red) and Regenerative Brake
Warning Light (yellow) to illuminate
simultaneously.
If this occurs, drive safely and have
your vehicle inspected by an authorized
HYUNDAI dealer. The operation of the
brake pedal may be more difficult than
normal and the braking distance may
increase.

01
1-15
Stop safely and check Hybrid system
OOSHQ019007L
This message is displayed when there
is a problem with the hybrid control
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
OOSHQ019008L
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
OOSHQ019009L
This message is displayed when a
problem occurs 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
OOSHQ019010L
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.

Foreword / Hybrid System Overview
1-16
Refuel to prevent Hybrid battery
damage
OOSHQ019011L
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
OOSHQ019012L
This message is displayed when the
inverter coolant is nearly empty.
You should refill the inverter coolant.
Park with engine On to charge
battery
OOSHQ019013L
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
OOSHQ019027L
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.

01
1-17
Energy Flow
The hybrid system displays the energy
flow in various operating modes. While
driving, the current energy flow is
specified in 11 modes.
Vehicle stop
ODN8HQ019001L
The vehicle is stopped.
(No energy flow)
EV propulsion
ODN8HQ019002L
Only the motor power is used to drive the
vehicle.
(Battery → Wheel)
Power assist
ODN8HQ019003L
Both the motor and the engine power are
used to drive the vehicle.
(Battery & Engine → Wheel)
Engine only propulsion
ODN8HQ019004L
Only the engine power is used to drive
the vehicle.
(Engine → Wheel)

Foreword / Hybrid System Overview
1-18
Engine generation
ODN8HQ019005L
When the vehicle is stopped, the high-
voltage battery is charged up by the
engine.
(Engine → Battery)
Regeneration
ODN8HQ019007L
The high-voltage battery is charged up
by the regenerative brake system.
(Wheel → Battery)
Engine brake
ODN8HQ019010L
The engine braking is used to decelerate
the vehicle.
(Wheel → Engine)
Power reserve
ODN8HQ019008L
The engine is simultaneously used to
drive the vehicle and to charge up the
high-voltage battery.
(Engine → Wheel & Battery)

01
1-19
Engine generation/motor drive
ODN8HQ019011L
The engine charges up the high-voltage
battery. The motor power is used to drive
the vehicle.
(Engine → Battery → Wheel)
Engine generation/regeneration
ODN8HQ019009L
The engine and regenerative brake
system charges up the high-voltage
battery.
(Engine & Wheel → Battery)
Engine brake/regeneration
ODN8HQ019012L
The engine braking is simultaneously
used to decelerate the vehicle and to
charge up the high-voltage battery.
(Wheel → Engine & Battery)
Start engine to avoid battery
discharge
ODN8HQ019030L
If the engine is not turned on with
the Engine Start/Stop button in ACC
or ON for a while, the battery can be
discharged. Please turn on the engine to
prevent 12V battery from discharge.

Foreword / Hybrid System Overview
1-20
SAFETY PRECAUTIONS FOR HYBRID SYSTEM
Hybrid Vehicle Components
High voltage battery system
„„HPCU (Hybrid Power Control Unit) *1
OCN7HQ010006
„„High voltage battery system *2
OAEQ046019
*1 : Located in the engine compartment
*2 : Located under the rear seats
WARNING
Never touch orange colored or high
voltage labeled components, including
wires, cables, and connections. When
the insulators or covers are damaged or
removed, severe injury or death from
electrocution may occur.
WARNING
While replacing the fuses in the
engine compartment, never touch the
HPCU. The HPCU carries high voltage.
Touching the HPCU may result in
electrocution, serious injury, or death.
WARNING
In the hybrid system, the hybrid battery
uses high voltage to operate the motor
and other components. This high
voltage hybrid battery system can be
very dangerous.
Never touch the hybrid system. When
you touch the hybrid battery system,
serious injury or death may occur.
CAUTION
• Do not pile up any items in an area
behind the high voltage battery. In
a crash, the battery may become
unstable, or its performance may
degrade.
• Do not apply strong force nor pile
up any items above the luggage
compartment. Such an attempt
may distort the high voltage battery
case, causing a safety problem or
degrading the performance.
• Be careful when loading flammable
liquid in the luggage compartment.
It could cause operational and safety
degradation if the liquid leaks and
flows in the high voltage battery.
„„Drive motor *3
OCN7HQ010005
*3 : Located in the engine compartment

Foreword / Hybrid System Overview
1-22
NOTICE
• When the vehicle is paint baked, do
not bake over 30 minutes in 158°F
(70°C) or 20 minutes in 176°F (80°C)
degree.
• Do not wash the engine
compartment, using water. Water
may cause an electric shock and
damage the electronic components.
WARNING
This hybrid vehicle uses the hybrid
battery system inverter and converter
to generate high voltage. High voltage
in the hybrid battery system is very
dangerous and may cause severe burns
and electric shock. This may result in
serious injury or death.
• For your safety, never touch,
replace, disassemble or remove the
hybrid battery system including
components, cables and connectors.
Severe burns or electric shock may
result in serious injury or death when
you fail to follow this warning.
• When the hybrid battery system
operates, the hybrid battery system
can be hot. Always be careful
because burns or electric shock may
be caused by high voltage.
• Do not spill liquid on the HPCU, HSG,
motor and fuses. If the hybrid system
components come in contact with
liquid, it may result in electric shock.
Service Interlock Connector
OCN7HQ010001
In case of emergency, cut the service
interlock connector cable to isolate the
high voltage of the battery.
WARNING
Never disconnect the service interlock
connector or cut the wire except in an
emergency situation.
Serious problems may occur, such as
the vehicle will not start.
Hybrid Battery Cooling Duct
OCN7HQ010002
The hybrid battery cooling duct is
located on the middle side of the rear
seats. The cooling duct cools down the
hybrid battery. When the hybrid battery
cooling duct is blocked, the hybrid
battery may be overheated.
Clean the cooling duct for the hybrid
battery with a dry cloth on a regular
basis.

2
2.Vehicle Information
Vehicle Information
Exterior Overview ........................................................................\
..................2-2
Interior Overview
........................................................................\
...................2-4
Instrument Panel Overview
........................................................................\
...2-5
Engine Compartment
........................................................................\
............2-6
Dimensions
........................................................................\
..............................2-7
Engine specification
........................................................................\
...............2-7
Bulb Wattage
........................................................................\
..........................2-8
Tires and Wheels
........................................................................\
....................2-9
Volume and Weight
........................................................................\
..............2-10
Air Conditioning System
........................................................................\
.......2-10
Recommended Lubricants and Capacities
..................................................2-11Recommended SAE Viscosity Number .................................................................2-12
Vehicle Identification Number (VIN) ...........................................................2-13
Vehicle Certification Label
........................................................................\
...2-13
Tire Specification and Pressure Label
.........................................................2-14
Engine Number
........................................................................\
.....................2-14
Consumer Information
........................................................................\
.........2-15
Reporting Safety Defects
........................................................................\
.....2-16

2-5
02
The actual shape may differ from the illustration.OCN7010004N
INSTRUMENT PANEL OVERVIEW
1. Instrument cluster ..................................4-4
2. Driver’s front air bag .............................3-38
3. Engine start button.................................. 6-7
4. Key ignition switch .................................6-4
5. Infotainment system ...........................5-109
6. Hazard warning flasher switch ..............8-2
7. Climate control system ........................5-85
8. Passenger’s front air bag .....................3-38
9. Glove box .............................................5-102
10. Transmission shift lever ...........................6-12
11. Drive mode button ...............................6-38
12. Parking/View button ...........................7-100
13. Electronic parking brake switch ..........6-24
14. AUTO HOLD button ..............................6-28