Hyundai Sonata Hybrid 2015 Owner's Manual

H2
The Hyundai Hybrid Electric Vehicle
(HEV) uses a gasoline engine and an
electric motor for power. The electric
motor is run from a 280V high voltage
HEV battery.
Depending on the driving conditions,
the HEV computer decides whether to
use the engine or use the electric
motor or even both at times.
Fuel is saved when the engine is not
running at idle or when the vehicle is
driven by the electric motor from the
HEV battery.
The HEV battery charge must be
maintained for the times when the
engine acts as a generator, such as
when stopped at idle. Charging also
occurs when decelerating or by
regenerative braking.Display of Hybrid system
Many displays provide information about
the hybrid system, such as, ECO level
and ECO score.
Through the ECO LEVEL, the driver can
understand the benefits of economical
driving.
If the driver is using economical driving
techniques, the ECO LEVEL rises. This
means the CO2 emissions are reduced.
In TOTAL ECO SCORE, when you reach
the maximum step of ECO LEVEL, the
ECO system calculates the score and
saves the score.ECO level display flower mode.1
When the hybrid vehicle is started, the
ECO level step 4 is displayed. If you drive
economically, the ECO level will be
upgraded.
- However, if you do not drive economically,
the ECO level will be down-graded.
HYUNDAI HYBRID SYSTEM
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ECO level display flower mode.2
In the “vehicle setting”, if you change the
animation mode to "ON", the dynamic
image will be activated.
- This provides the driver with thedynamic ECO mode. Total ECO score display
If your ECO level achieves the top step,
your ECO score automatically saves 1
point.
In the “vehicle setting”, if you change the
animation mode to “ON”, the dynamic
image will be on.SOC Gauge (State of charge)
This State of Charge(SOC) gauge indi-
cates the remaining Hybrid battery power.
If the SOC is near L level, the vehicle
automatically operates the engine to
charge the battery. However, if the service
indicator and MIL(Malfunction indicator
lamp) turn on when the State of
Charge(SOC) is near L(Low), have your
vehicle checked by an authorized
HYUNDAI dealer immediately.
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H4
The Hyundai SONATA hybrid system
notifies customers of its energy flow
through MODE.
While driving, eleven MODEs show driv-
ers the current operating system.
Vehicle Stop
This mode means the
vehicle is stopped.
(No energy flow)
EV Propulsion
Motor power is used to
propel the vehicle.
(Battery ➞Wheel)
Power Assist
Motor and Engine
power are used to pro-
pel the vehicle.
(Battery & Energy ➞
Wheel)
Engine Only Propulsion
Engine power is used
to propel the vehicle.
(Engine ➞Wheel)
Engine Generation
When the vehicle is
stopped, engine charges
the high voltage battery.
(Engine ➞Battery)
SONATA HEV ENERGY FLOW
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Regeneration
The high voltage battery
is charged by the regen-
erative brake system.
(Wheel ➞Battery)
Engine Brake
Engine braking is used
to help decelerate the
vehicle.
(Wheel ➞Engine)
Power Reserve
When the engine oper-
ates the vehicle, the
battery is simultane-
ously charged.
(Engine ➞ Wheel &
Battery)
Engine Generation/Motor Drive
The engine charges
the high voltage bat-
tery. The motor propels
the vehicle.
(Engine ➞Battery ➞
Wheel)
Engine Generation/Regeneration
The engine and regen-
erative brake system
charges the high volt-
age battery.
(Engine & Wheel ➞ Battery)
Engine Brake/Regeneration
To decelerate the vehi-
cle, engine braking is
used while the regener-
ative braking is applied
and also charges the
hybrid battery.
(Wheel ➞Engine &
Battery)
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Starting the engine
1. Carry the smart key or leave it insidethe vehicle.
2. Make sure the parking brake is firmly applied.
3. Place the shift lever in the P(Park) position. In N(Neutral) position, you
can not start the vehicle.
4. Depress the brake pedal.
5. Press the engine start/stop button.
6. In extremely cold weather or after the vehicle has not been operated for sev-
eral days, let the engine warm up with-
out depressing the accelerator.
Whether the engine is cold or warm, it
should be started without depressing
the accelerator.
if it is far away from you, the engine
may not start.
in the ACC or ON position, if any door
is open, the system checks for the
smart key. If the smart key is not in
the vehicle, the warning, "Key is not
in vehicle" will come on, and if all
doors are closed, the chime will also
sound for about 5 seconds. The indi-
cator will turn off while the vehicle is
moving. Keep the smart key in the
vehicle when using the ACC position
or if the vehicle engine is on. If the starting procedure is followed,
the "READY" symbol on the instru-
ment cluster will turn on. For more
details, please check Chapter 5.
ECONOMICAL and SAFE OPERA-
TION of Hybrid system
Drive smoothly. Accelerate at a moder-
ate rate and maintain a steady cruising
speed. Don't make "jack-rabbit" starts.
Don't race between stoplights.
Avoid heavy traffic whenever possible.
Always maintain a safe distance from
other vehicles so you can avoid unnec-
essary braking. This also reduces
brake wear.
The regenerative brake generates energy when the vehicle decelerates.
When the hybrid battery power is low, the hybrid system automatically
recharges the hybrid battery.
When the engine runs in "N" position, the hybrid system can not generate
electricity. The hybrid battery cannot
recharge in "N" position. Please check
Chapter 5.
✽ ✽ NOTICE
In the hybrid system, the engine auto-
matically runs and stops. If the hybrid
system operates, the "READY" symbol
is illuminated.
In the following situation, the engine
may operate automatically.
- When the engine is ready to run
- When the hybrid battery is charged
- Depending on the temperature condi-
tion of the hybrid battery
STARTING THE HYBRID VEHICLE (SMART KEY)
WARNING
To avoid serious injury, turn off
ignition and be sure "READY" lamp
is off before working under hood.
Engine may start unexpectedly.

H7
THE COMPONENTS OF HYBRID VEHICLE
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1. Engine : 2.4L
2. Drive Motor : 35kW
3. Transmission : 6AT
4. Hybrid Starter Generator (HSG)
5. High voltage battery system6. Electric air-conditioning compressor
7. Electric Water Pump (EWP)
8. HPCU (Hybrid Power Control Unit)
9. Electric Oil Pump (EOP)
10. Brake system with hydraulic booster

H8
THE COMPONENTS OF HYBRID VEHICLE (CONT.)
WARNING
In the hybrid system, the hybrid bat-
tery 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. If you touch the
hybrid battery system, serious
injury or death may occur.
WARNING
Never touch orange or high voltage
labeled components including
wires, cables, and connections. If
the insulators or covers are dam-
aged or removed, severe injury or
death from electrocution may occur.
WARNING
When replacing the fuses in the
engine compartment, never touch
the HPCU. The HPCU carries high
voltage. Touching the HPCU could
result in electrocution, serious
injury, or death.
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WARNING
• Do not disassemble the high volt-age motor connector. The high
voltage motor connector may con-
tain residual high voltage. Coming
in contact with high voltage may
result in death or serious injury.
Your vehicle's hybrid system should only be inspected or
repaired by an authorized
Hyundai dealer.
■ HPCU (Hybrid Power Control Unit)■ Motor
■ HEV Battery

H9
WARNING
Do not disassemble or assemblethe high voltage battery system.
Doing so may result in electric
shock causing death or serious
injury.
If you disassemble or assemble hybrid system components
improperly, it may damage the
performance and reliability of
your vehicle.
If electrolyte comes in contact with your body, clothes or eyes,
immediately flush with a large
quantity of fresh tap water. Have
your eyes examined by a doctor
as soon as possible.
WARNING
Never assemble or disassemble the
high voltage battery system.
If you assemble or disassemblethe high voltage battery system,
the durability and performance of
the vehicle may be damaged.
When you want to check the high voltage battery system, have the
vehicle checked and inspected by
an authorized HYUNDAI dealer.
Do not touch the high voltage bat- tery and high voltage cable con-
nected to motor (orange color).
Severe burns and electric shock
may occur. For your safety, do not
touch the cover of electronic com-
ponents and electronic cable. Do
not remove the cover of electronic
components and electronic cable.
In particular, never touch the high
voltage battery system when the
hybrid system is operating. It may
result in death or serious injury.
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WARNING
Never use the package modules(high voltage battery, inverter,
converter) for any other purpose.
Do not use an after-market bat- tery charger to charge the high
voltage battery. Doing so may
result in death or serious injury.
Never get near or put a high volt- age battery system in a fire. Doing
so may result in serious burns.
Never drill into, strike or otherwise damage the package modules. An
electric shock may occur resulting
in serious injury or death.
CAUTION
When the vehicle is paint baked, do not pass 30 minutes in 158°F(70°C) or 20 minutes in 176°F (80°C) degree.
When you clean the engine com- partment, do not wash usingwater. Water may cause an elec-tric shock to occur and damageelectronic parts and components.
■ High voltage battery system

H10
Safety plug
This safety plug (1) located in the rear
trunk as shown should always be pulled
out to disconnect and turn off the hybrid
system.
IMPORTANT: Wait 5 minutes after this
lever is disconnected to work on the
car to assure all remaining charge in
the system has dissipated.
The special features of hybrid
vehicle.
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 sys-
tem. 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 compartment. None
of these sounds indicate a problem.
These are normal characteristics 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, thebrake pedal is released.
- When the hybrid system is turned off, the brake pedal is applied.
- When the driver door is opened.
THE COMPONENTS OF HYBRID VEHICLE (CONT.)
WARNING
This hybrid vehicle uses the hybrid
battery system inverter and con-
verter to generate high voltage.
High voltage in the hybrid battery
system is very dangerous and can
cause severe burns and electric
shock. This may result in serious
injury or death.
For your safety, never touch, replace, dismantle or remove the
hybrid battery system including
components, cables and connec-
tors. Severe burns or electric
shock may result in serious
injury or death if you do not fol-
low this warning.
When the hybrid battery system operates, the hybrid battery sys-
tem can be hot. Always be careful
because burns or electric shock
may be caused by high voltage.
Do not drop water or liquid on to HPCU, HSG, Motor and fuses. The
hybrid system components are
covered. If you drop water or liq-
uid on to hybrid system compo-
nents, it may result in electric
shock.
DANGER
The safety plug is attached to high
the voltage hybrid battery system.
Touching safety plug may result in
death or serious injury. Service per-
sonnel should follow procedure in
the service manual.
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When the hybrid system is turned on, the
engine may run or not. In this situation,
you may feel a vibration. This does not
indicate a malfunction. If the "READY"
symbol is turned on, the hybrid system
starts. Even if the engine is off, you can
operate the vehicle as long as the
"READY" symbol is illuminated.Virtual Engine Sound System
(VESS)
The Virtual Engine Sound System gener-
ates engine sound for pedestrians to
hear vehicle sound because there is lim-
ited sound while motor power is used at
speeds below 18 mph.
WARNING
When you start the hybrid systemin the "P" transmission position,
the "READY" symbol is illuminat-
ed in the cluster. The driver can
drive the vehicle even if the
engine is stopped.
When you leave the vehicle, you should turn off the hybrid system
or shift into the "P" position. If
you depress the accelerator pedal
by mistake and the vehicle is not
in the "P" position, the vehicle will
move abruptly. This may result in
serious injury or death.
CAUTION
The hybrid system contains manyelectronic components. High volt-age components like cables andother parts may emit electromag-netic waves. Even if the electromag-netic cover blocks electromagneticemissions, electromagnetic wavesmay have an effect on electronic appliances. If you park the vehiclefor a long time, the hybrid systemwill discharge. You need to drive thevehicle several times per month. Werecommend driving at least 1 houror 10 miles when you drive the vehi-cle. If the hybrid battery is dis-charged and if it is impossible to jump start the vehicle contact yourHyundai dealer.