2020 Hyundai Ioniq Hybrid engine

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Hybrid Vehicle
The HYUNDAI Hybrid Electric Vehicle (HEV) uses both the petrol engine and the electric motor for power. The electric
motor is run by a 270V high-voltage HEV battery.
Depending on the driving conditions, the HEV computer selectively operates between the engine and the electric motor
or even both at the same time.
Fuel efficiency increases when the engine is at idle, or when the vehicle is driven by the electric motor with the HEV bat-
tery.
The HEV battery charge must be maintained, so at times the engine will come on even at idle to act as a generator.
Charging also occurs when decelerating or by regenerative braking.
OAE056066 Startup/Low speed cruise
Electric motor
Acceleration
Electric motor + Engine
High speed cruise
Engine
Deceleration
Charging
Stop
Engine OFF

H3
Plug-in Hybrid Vehicle
The HYUNDAI Plug-in Hybrid Electric Vehicle (PHEV) shares the characteristics of both a conventional hybrid elec-
tric vehicle and an all-electric vehicle.
When used as a conventional hybrid electric vehicle, the HEV computer selectively operates between the engine and
the electric motor or even both at the same time.
When it is operating in the electric vehicle mode, the vehicle is driven only using the electric motor over a certain dis-
tance until the hybrid battery becomes low. The driving distance in EV mode depends on customer driving style and
road conditions. Aggressive driving maneuvers may at times temporarily enable the engine to operate for maximum
power.
The hybrid battery can be fully charged by connecting a plug to an external electric power source.
OAEPH057200L
Electric Vehicle ModeStartup/Low speedAcceleration High speed Deceleration External charging
Electric motor
CD (Charge Depleting) ModeCS (Charge Sustaining) Mode
Charging
MotorEngine+MotorEngine+MotorChargingBattery charging
6

H29
Starting the Vehicle
Vehicles with remote key system
1. Make sure the parking brake is
applied.
2. Make sure the shift lever is in P
(Park).
3. Depress the brake pedal.
4. Turn the ignition swich to the
START position. Hold the key
(maximum of 10 senconds) until
the " " indicator comes on and
release it.
Whether the engine is cold or
warm, it should be started without
depressing the accelerator.
After following the start proce-
dures, “ ” indicator on the
instrument cluster will turn on.
For more information, please check
Chapter 5.
Vehicles with smart key system
1. Carry the smart key or leave it
inside the vehicle.
2. Make sure the parking brake is
firmly applied.
3. Place the shift lever in P (Park).
With the shift lever in N (Neutral),
you cannot start the vehicle.
4. Depress the brake pedal.
5. Press the Engine Start/Stop but-
ton. If the hybrid system starts, the
" " indicator will come on.
Whether the engine is cold or
warm, it should be started without
depressing the accelerator.
After following the start proce-
dures, “ ” indicator on the
instrument cluster will turn on.
For more information, please check
Chapter 5.ECONOMICAL and SAFE OPERA-
TION of Hybrid system
Drive smoothly. Accelerate at a
moderate rate and maintain a
steady cruising speed. Do not
make "jack-rabbit" starts. Do not
race between stoplights.
Avoid heavy traffic whenever pos-
sible. Always maintain a safe dis-
tance from other vehicles so you
can avoid unnecessary braking.
This also reduces brake wear out.
The regenerative brake generates
energy when the vehicle deceler-
ates.
When the hybrid battery power is
low, the hybrid system automatical-
ly recharges the hybrid battery.
When the engine is running with
the shift lever in N (Neutral), the
hybrid system cannot generate
electricity. The hybrid battery can-
not recharge with the shift lever in N
(Neutral).
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H30
Information
In the hybrid system, the engine auto-
matically runs and stops. When the
hybrid system operates, the " "
indicator is illuminated.
In the following situation, the engine
may operate automatically.
- When the engine is ready to run
- When the hybrid battery is being
charged
- Depending on the temperature con-
dition of the hybrid battery
Special Features
Hybrid vehicles sound different than
petrol engine vehicles. When the
hybrid system operates, you may
hear a sound from the hybrid battery
system behind the rear seat. If you
apply the accelerator pedal rapidly,
you may hear an unconventional
sound. When you apply the brake
pedal, you may hear a sound from
the regenerative brake system.
When the hybrid system is turned off
or on, you may hear a sound in the
engine compartment. If you depress
the brake pedal repeatedly when the
hybrid system is turned on, you may
hear a sound in the engine compart-
ment. None of these sounds indicate
a problem. These are normal charac-
teristics of hybrid vehicles.If any of following occur, it's a normal
condition if you hear a motor sound
in the engine compartment:
- After turning off the hybrid system,
the brake pedal is released.
- When the hybrid system is turned
off, the brake pedal is applied.
- When the driver door is opened.
When the hybrid system is turned
ON, the petrol engine may run or
may not. In this situation, you may
feel a vibration. This does not indi-
cate a malfunction. When the “ ”
indicator illuminates, the hybrid sys-
tem is ready to begin start. Even if the
engine is off, you can operate the
vehicle as long as the “ ” indicator
is illuminated.
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H31
The hybrid system contains many
electronic components. High volt-
age components, such as cables
and other parts, may emit electro-
magnetic waves. Even when the
electromagnetic cover blocks elec-
tromagnetic emissions, electro-
magnetic waves may have an effect
on electronic devices. When your
vehicle is not used for a long period
of time, the hybrid system will dis-
charge. You need to drive the vehi-
cle several times a month. We rec-
ommend driving at least for 1 hour
or 16 km. When the hybrid battery is
discharged, or when it is impossi-
ble to jump start the vehicle, we
recommend that you contact your
HYUNDAI dealer.
Virtual Engine Sound System
(VESS)
The Virtual Engine Sound System
generates engine sound for pedestri-
ans to hear vehicle sound because
there is limited sound whilst motor
power is used.
The VESS may be turned ON or
OFF by pressing the VESS button.
(if equipped)
If the vehicle is moving at low
speed, the VESS will operate.
When the gear is shifted to R
(Reverse), an additional warning
sound will be heard.
NOTICE
When you start the hybrid
system with the shift lever in
P (Parking), the “ ” indica-
tor illuminates on the instru-
ment cluster. The driver can
drive the vehicle, even when
petrol engine is off.
When you leave the vehicle,
you should turn OFF the
hybrid system or locate the
shift lever in P (Park). When
you depress the accelerator
pedal by mistake, or when the
shift lever is not in P (Park),
the vehicle will abruptly move,
possibly resulting in serious
injury or death.
WARNING
OAEPH049540R

H33
According to the hybrid system
gauge area, the "EV" indicator comes
on or off.
- "EV" indicator ON : Vehicle is driven
using the electric motor or the
petrol engine is stopped.
- "EV" indicator OFF : Vehicle is driv-
en using the petrol engine.Hybrid Battery SOC
(State of Charge) Gauge
This gauge indicates the remaining
hybrid battery power. If the SOC is
near the "0 or L (Low)" level, the
vehicle automatically operates the
engine to charge the battery.However, if the Service Indicator ( )
and Malfunction Indicator Lamp (MIL)
( ) turn on when the SOC gauge is
near the "0 or L (Low)" level, we rec-
ommend the vehicle be checked by an
authorised HYUNDAI dealer.
❈The actual cluster in the vehicle
may differ from the illustration.
■Type B
■Type A
OAEPH049522L/OAEPH049647L
OAEPH048522/OAEPHQ048009

H35
CS (Charge Sustaining, Hybrid)
mode : The high-voltage (hybrid)
battery and petrol engine is used to
drive the vehicle.
Information
Even when the battery charging rate
is high and driving in electric mode is
possible, engine may turn on in some
areas to protect the system.
Infotainment system Screen
(Plug-in hybrid vehicle)
(if equipped)
Press [PHEV] on the [Home] screen
or the [All menus] screen and the
menus related to plug-in hybrid
([ECO driving], [Energy information],
[EV range], [Set charging times],
[Charging stations], [Petrol stations])
are displayed.
For more information, please refer
to the Multimedia System Manual
that was separately supplied with
your vehicle.
Aux. Battery Saver+
(Plug-in hybrid vehicle)
The Aux. Battery Saver+ is a function
that monitors the charging status of
the 12 V auxiliary battery. If the aux-
iliary battery level is low, the main
high voltage battery charges the aux-
iliary battery.
Information
The Aux. Battery Saver+ function will
be ON when the vehicle is delivered. If
the function is not needed, you may
turn it off in the Users Settings mode
on the cluster. For more information,
refer to the following page.
i
i
OAEPHQ049856L

H37
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. In this case, we recommend
that you have your vehicle inspected
by an authorised HYUNDAI dealer.
Service Warning Light
This warning light illuminates :
When the ignition switch or the
Engine Start/Stop button is in the
ON position.
- It illuminates for approximately 3
seconds and then goes off.
When there is a problem with the
hybrid vehicle control system or
hardware.
When the warning light illuminates
whilst driving, or does not go OFF
after starting the vehicle, we recom-
mend that you have your vehicle
inspected by an authorised HYUNDAI
dealer.
EV Mode Indicator
This indicator illuminates when the
vehicle is driven by the electric motor.
EV
When the function is activating,
the third Charging Indicator
Lamp will blink and high voltage
electricity will be flowing in the
vehicle. Do not touch the high
voltage electric wire (orange),
connector, and all electric com-
ponents and devices. This may
cause electric shock and lead to
injuries. Also, do not modify
your vehicle in any way. This
may affect your vehicle per-
formance and lead to an acci-
dent.
WARNING
OAEEQ016025