2016 Hyundai Sonata Hybrid engine

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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 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 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.
OLFH054001
Startup/Low speed cruise
Electric motor
Acceleration
Electric motor + Engine
High speed cruise
Engine
Deceleration
Charging
Stop
Engine OFF

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Gauges
Hybrid System Gauge
The hybrid system gauge indicates
whether the current driving condition
is fuel efficient or not.
• CHARGE :
Shows that the energy made by
the vehicle is being converted
to electrical energy. (Regenerated
energy)
ECO : Shows that the vehicle is being
driven in an Eco-friendly manner.
POWER : Shows that the vehicle is exceed-
ing the Eco-friendly range. According to the hybrid system
gauge area, the “EV” indicator
comes on or off.
- “EV” indicator ON : Vehicle is driv-
en using the electric motor or the
gasoline 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.
OLFH044204KOLFH044205K

H4
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, 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 illuminates for approximately 3seconds and then goes 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.
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EV

H5
Regenerative
Brake Warning
Light
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 illu-
minate simultaneously.
In this case, drive safely and have
your vehicle inspected by an author-
ized HYUNDAI dealer.
The operation of the brake pedal may
be more difficult than normal and the
braking distance can increase.
Check Hybrid system
This warning message illuminates
when there is a problem with the
hybrid control system.
Refrain from driving when the warn-
ing message is displayed.
In this case, have your vehicle inspect-
ed by an authorized HYUNDAI dealer.
Check Hybrid system.
Turn off engine.
This warning message illuminates
when there is a problem with the
hybrid system. The " " indicator
will blink and a warning chime will
sound until the problem is solved.
In this case, have your vehicle
inspected by an authorized HYUNDAI
dealer.
(red color) (yellow color)
OLFH044247L/OLFH044248L
■Type A ■Type B
OLFH044227L/OLFH044228L
■Type A ■Type B

H6
Check Hybrid system. Do not start
engine.
This warning message illuminates
when the hybrid battery power
(SOC) level is low. A warning chime
will sound until the problem is solved.
You may pull over to a complete stop
with parking brake on hold the accel-
erator Down fully to the floor to attempt
rapid Charge back of the battery at a
controlled Speed. Watch the HEV
Battery Gauge to make Sure it is mov-
ing higher. If not there may be a prob-
lem. In that case, have your vehicle
inspected by An authorized HYUNDAI
dealer.
Stop vehicle and check power supply
This warning message illuminates
when a failure occurs in the power
supply system.
In this case, park the vehicle in a safe
location and tow your vehicle to the
nearest authorized HYUNDAI dealer
and have the vehicle inspected.
Stop vehicle to charge battery
This warning message illuminates
when the hybrid battery power (SOC)
level is low.
In this case, park the vehicle in a
safe location and wait until the hybrid
battery is charged.
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OLFH044229L/OLFH044230L
■ Type A ■Type B
OLFH044231L/OLFH044232L
■Type A ■Type B
OLFH044239L/OLFH044240L
■Type A ■Type B

H8
Check brakes
This warning message illuminates
when the brake performance is low
or the regenerative brake does not
work properly due to a failure in the
brake system.
In this case, it may take longer for the
brake pedal to operate and the brak-
ing distance may become longer.
Check Virtual Engine Sound System
This message illuminates when
there is a problem with the Virtual
Engine Sound System (VESS).
In this case, have your vehicle inspect-
ed by an authorized HYUNDAI dealer.
Coasting guide (if equipped)
It informs the driver when to take the
foot off from the accelerator by antic-
ipating a decelerating event* based
on the analysis of driving routes and
road conditions of the navigation. It
induces the driver to coast the vehi-
cle on a road only with the electrical-
motor power. This prevents unneces-
sary fuel consumption and increases
fuel efficiency
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OLFH044542L/OLFH044543L
■ Type A ■Type B
OLFH044249L/OLFH044250L
■Type A ■Type B
OLFH044253N/OLFH044254N
■Type A ■Type B

H9
❈Examples of decelerating events:
U-turn, turnings to the right/left,
traffic circles, highway junctions,
tollgates, and roadside unmanned
cameras to detect speeding.■Type B
Operation conditions
Press the Engine Start/Stop button. In the User Settings Mode, select
Driving Assistance, and then Coasting Guide to turn on the system.
Cancel the selection of coasting guide to turn off the system.
To activate the system, take the following procedures. Enter your destina-
tion information on the navigation and select the driving route. Select the
ECO mode in the Integrated Driving Control System. Then, satisfy the fol-
lowing.
- The driving speed should be between 37 mph (60 km/h) and 99 mph
(160 km/h).
❈ The operating condition (driving speed) varies in a situation, as there
may be a difference in displaying the driving speeds between the instru-
ment cluster and the navigation, and as there may a difference between
the actual driving speed and the driving speed display in accordance
with a tire inflating condition.
OLFH044554N/OLFH044555N
■ Type A
OLFH044182N/OLFH044556N

H12
Power Assist
Both the motor and the engine power
are used to drive the vehicle.
(Battery & Energy ➞Wheel)
Engine Only Propulsion
Only the engine power is used to
drive the vehicle.
(Engine ➞Wheel)
Engine Generation
When the vehicle is stopped, the
high-voltage battery is charged up by
the engine.
(Engine ➞Battery)
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OLFH044217N/OLFH044218N
■ Type A■Type B
OLFH044219N/OLFH044220N
■Type A■Type B
OLFH044221N/OLFH044222N
■Type A■Type B