2015 Hyundai Sonata Hybrid engine

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.
OYFH063020N

H11
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.

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If An Accident Occurs
WARNING
After parking the vehicle, shift thetransmission into "P" position.
Turn off the hybrid system by
pushing the Engine Start/Stop
button.
For your safety, do not touch high voltage cables, connectors and
package modules. High Voltage
components are orange in color.
Exposed cables or wires may be visible inside or outside of the
vehicle. Never touch the wires or
cables, because an electrical
shock may occur causing injury
or death.
If a fire occurs, to extinguish a small high-voltage
battery fire, the following tech-
niques can be used:
- Dry chemical
- CO2
- Large amounts of water
- Regular foam
(Continued)
WARNING
If a vehicle accident occurs:
1. Stop the vehicle and shift thetransmission into "P" position.
And then depress the parking
brake.
2. Turn off the Hybrid system by pushing the Engine Start/Stop
button.
3. Evacuate to the safety place.
4. Call emergency services for help and let them know the vehicle is a
Hybrid vehicle.
Do not touch high voltage cables,
connectors and package modules.
High voltage components are
orange in color.
Exposed cables or wires may be
visible inside or outside of the vehi-
cle. Never touch the wires or
cables, because an electrical shock
may occur causing injury or death.
(Continued)
For a large high-voltage battery
fire, use these types of extinguish-
ing methods:
- Large amounts of water
- Fog
- Regular foam
If you need towing, refer to chapter 6.

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When the hybrid vehicle shuts off
When the high voltage battery is dis-
charged, or the 12-volt battery is dis-
charged, or the fuel tank is empty, the
hybrid system may not operate while
driving. If the Hybrid system cannot oper-
ate, do the following:
1. Reduce the vehicle speed gradually.Pull your vehicle off the road in a safe
area.
2. Shift the transmission into "P" position.
3. Turn on the hazard warning flashers.
4. Set the start button at OFF, and try to start the Hybrid system by applying the
brake pedal and pushing the Engine
Start/Stop button.
5. If the Hybrid system will not operate, refer to "EMERGENCY STARTING" in
chapter 6.
If you try to jump start the vehicle, confirm
the fuel level and exact procedure of jump
start. For details, see the "EMERGENCY
STARTING" section in chapter 6. If the
fuel level is low, do not try to drive the
vehicle on battery power. The high volt-
age battery may be discharged and the
Hybrid system will turn off.
WARNING
If a fire occurs:
1. Stop the vehicle and shift the transmission in to "P" position,
and then depress the parking
brake. To ventilate smoke from a
fire, open the windows if possible.
2. Turn off the Hybrid system by pushing the Engine Start/Stop
button.
3. Leave the vehicle and evacuate to a safe place.
4. Call emergency services for help and let them know the vehicle is a
Hybrid vehicle.
If you have an extinguisher, extin-
guish a fire carefully.
Do not touch high voltage cables,
connectors and package modules.
High voltage components are
orange in color.
Exposed cables or wires may be
visible inside or outside of the vehi-
cle. Never touch the wires or
cables, because an electrical shock
may occur causing injury or death.
WARNING
If a submersion in water occurs:
If your vehicle was flooded and has
soaked carpeting or water on the
flooring, you should not try to start
the Hybrid system. Turn off the
hybrid system and leave the vehicle
with possession of the key. Never
touch the high voltage cables, con-
nectors and package modules,
because an electrical shock may
occur causing injury or death. High
Voltage cables are orange in color.
Have the car towed to an author-
ized HYUNDAI dealer.
THE COMPONENTS OF HYBRID VEHICLE (CONT.)