2019 HYUNDAI SONATA HYBRID Hybrid drive

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Hybrid Vehicle
HHEEVV (( HH YY BBRRIIDD EE LLEE CCTT RR IICC VV EEHH IICC LLEE )) SS YY SSTT EEMM
The HYUNDAI Hybrid Electric Vehicle (HEV) uses both the gasoline engine and the electric motor for power. The elec-
tric motor is run by a 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 off at idle, or when the vehicle is driven by the electric motor with the HEV
battery.
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.
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Startup/Low speed cruise
Electric motor
AccelerationElectric motor + Engine High speed cruiseEngineDecelerationCharging Stop Engine OFF

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PPHH EEVV (( PP LLUU GG--IINN EE LLEE CCTT RR IICC VV EEHH IICC LLEE )) SS YY SSTT EEMM
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 for over a certain
distance 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 maxi-
mum power.
The hybrid battery can be fully charged by connecting a plug to an external electric power source.
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Electric Vehicle Mode
Startup/Low speed
Acceleration High speed Deceleration External charging
Electric motor
CD (Charge Depleting) Mode CS (Charge Sustaining) Mode
Charging
MotorEngine+MotorEngine+MotorChargingBattery charging
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DDRRIIVV IINN GG TT HH EE HH YY BBRRIIDD //PP LLUU GG--IINN HH YY BBRRIIDD VV EEHH IICC LLEE
Starting the vehicle
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 and a
double chime can be heard.
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 checkChapter 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). 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
i
To avoid serious injury, turn off
hybrid system and be sure " "
indicator is off before working
under hood. Engine may start
unexpectedly.
WARNING

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Special features
Hybrid vehicles sound different than
gasoline 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 gasoline engine may acti-
vate or may not. In this situation, you
may feel a vibration. This does not
indicate a malfunction. When the
" " indicator illuminates, the
hybrid system is ready to begin driv-
ing. Even if the engine is off, you can
operate the vehicle as long as the
" " indicator is illuminated. 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 appliances.
When your vehicle is not used for
a long period of time, the hybrid
system will discharge. You need to
drive the vehicle several times a
month. We recommend driving at
least for 1 hour or 16 km (10 miles).
When the hybrid battery is dis-
charged, or when it is impossible
to jump start the vehicle, contact
your HYUNDAI dealer.
NOTICE

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Virtual Engine Sound System
(VESS)
The Virtual Engine Sound System
generates engine sounds for pedes-
trians to hear vehicle sound because
there is limited sound while electric
power is used.
What Does RegenerativeBraking Do?
It uses an electric motor when decel-
erating and braking and transforms
kinetic energy to electrical energy in
order to charge the high voltage bat-
tery.
Battery
The vehicle is composed of a high- voltage battery that drives the
motor and air-conditioner, and an
auxiliary battery (12 V) that drives
the lamps, wipers, and audio sys-tem.
The auxiliary battery is automati- cally charged when the vehicle is in
the ready ( ).
Hybrid System Gauge
The hybrid system gauge indicates
whether the current driving conditionis fuel efficient or not.
When you start the hybrid
system with the shift lever in
P (Park), the “ ” indicatorilluminates on the instrument
cluster. The driver can drive
the vehicle, even when the
gasoline engine is off.
When you leave the vehicle,
you should turn OFF the vehi-
cle and place the shift lever in
P (Park). If 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 ordeath.
WARNING
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■ Hybrid model vehicle only
■ Plug-in hybrid model vehicle only

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CHARGE :Shows that the energy made bythe vehicle is being converted
to electrical energy. (Regeneratedenergy)
ECO :
Shows that the vehicle is beingdriven in an Eco-friendly manner.
POWER : Shows that the vehicle is exceeding
the Eco-friendly range.
According to the hybrid systemgauge area, the "EV" indicator comes
on or off.
- "EV" indicator ON : Vehicle is driven using the electric motor or thegasoline engine is stopped.
- "EV" indicator OFF : Vehicle is driv- en using the gasoline engine.Hybrid Battery SOC
(State of Charge) Gauge
This gauge indicates the remaining
hybrid battery power. If the SOC is
near the "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 (State of
charge) gauge is near the "L (Low)"
level, have the vehicle checked by an
authorized HYUNDAI dealer.
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■
Plug-in hybrid model vehicles only
■ Hybrid model vehicles only

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Changing plug-in hybrid mode
Pressing the HEV button changes
the plug-in hybrid system modes, as
below.
Shortly pressed:
EV mode ↔HEV mode
Press and hold: It changes to the HEV-charging
mode. When the HEV button is pressed in
the HEV-charging mode, the mode
changes as below.
- Shortly pressed : It changes to the
CS mode.
- Press and hold: It remains in the
HEV-charging mode.
Plug-in hybrid mode indicator

: The high-voltage(hybrid) battery is
used to drive the
vehicle.

:The high-voltage
(hybrid) battery andgasoline engine is
used to drive the
vehicle.
:
Gasoline engine is
used to drive the
vehicle and charge
the high-voltage
(hybrid) battery
A corresponding message is displayed
to indicate the selected mode.
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OLFH047781N/OLFH047782N/OLFH047783N

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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 : Limp home driving mode. When the ready indicator goes OFF
or blinks, there is a problem with the
system. In this case, have your vehi-
cle inspected by an authorized
HYUNDAI dealer.
Service Warning Light
This warning light illuminates :
When the Engine Start/Stop button is in the ON position.
- It normally flashes on momentar-ily for 3 seconds at Ready On and
should then stay off.
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, have your vehicle
inspected by an authorized HYUNDAI
dealer.
EV Mode Indicator
This indicator illuminates when the
vehicle is driven by the electric motor.
Charging Cable Connection Indicator (Plug-in hybrid)
This indicator illuminates in red when
the charging cable is connected.
EV