Hyundai Ioniq Hybrid 2018 Workshop Manual

H41
Switching to Hybrid mode to
allow heating or air condition-
ing (Plug-in hybrid vehicle)
This message is displayed when the
vehicle automatically switches to
HEV mode to allow heating or air
conditioning. It is when the coolant
temperature is low (below -14°C)
and the driver turns on the heating or
cooling system.
If the coolant temperature gets high-
er than -14°C or the driver turns off
the heating or cooling system the
vehicle returns to its default (EV)
mode.
Maintaining Hybrid mode to
allow heating or air condition-
ing (Plug-in hybrid vehicle)
This message is displayed when the
vehicle maintains the HEV mode to
allow heating or air conditioning. The
mode does not change when the
driver presses the [EV/HEV] button
to switch from the HEV mode to EV
mode while the heating and cooling
system is on and the coolant temper-
ature is below -14°C.
Low/High System Temp.
Maintaining Hybrid mode
(Plug-in hybrid vehicle)
This message is displayed when the
temperature of the high-voltage
(hybrid) battery is too low or too high.
This warning message is to protect
the battery and the hybrid system.
OAEPH047207LOAEPH047527LOAEPH047203L/OAEPH047204L

H42
Low/High System Temp.
Switching to Hybrid mode
(Plug-in hybrid vehicle)
This message is displayed when the
temperature of the high-voltage
(hybrid) battery is too low or high.
This warning message is to protect
the battery and the hybrid system.
Switching to Hybrid mode to
lubricate engine (Plug-in hybrid
vehicle)
This message is displayed when the
vehicle is automatically switched to
the HEV mode to lubricate engine
while the ignition switch is in the ON
position.
Maintaining Hybrid mode to pro-
tect engine (Plug-in hybrid vehi-
cle)
This message is displayed when the
[EV/HEV] button is pressed but it is
impossible to switch from the HEV
mode to EV mode due to engine
lubrication.
OAEPH047530LOAEPH047528L
DRIVING THE HYBRID/PLUG-IN HYBRID VEHICLE (CONT.)
OAEPH047205L/OAEPH047206L

H43
Exit SPORT to switch to electric
mode (Plug-in hybrid vehicle)
This message is displayed when
[EV/HEV] button is pressed but it is
impossible to switch from the HEV
mode to EV mode because the
SPORT mode is engaged.
Energy Flow
The hybrid system informs the driv-
ers its energy flow in various operat-
ing modes. While driving, the current
energy flow is specified in 11 modes.
Vehicle Stop
The vehicle is stopped.
(No energy flow)
EV Propulsion
Only the motor power is used to drive
the vehicle.
(Battery ➞Wheel)OAEPH047531L
OAE046149L/OAEQ046001L
■Type A■Type B
OAE046150L/OAEQ046020L
■Type A■Type B

H44
Power Assist
Both the motor and the engine power
are used to drive the vehicle.
(Battery & Engine ➞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)
DRIVING THE HYBRID/PLUG-IN HYBRID VEHICLE (CONT.)
OAE046151L/OAEQ046021L
■Type A■Type B
OAE046152L/OAEQ046022L
■Type A■Type B
OAE046153L/OAEQ046005L
■Type A■Type B

H45
Regeneration
The high-voltage battery is charged
up by the regenerative brake system.
(Wheel ➞Battery)
Engine Brake
The engine braking is used to decel-
erate the vehicle.
(Wheel ➞Engine)
Power Reserve
The engine is simultaneously used to
drive the vehicle and to charge up
the high-voltage battery.
(Engine ➞Wheel & Battery)
OAE046152L/OAEQ046004L
■Type A■Type B
OAE046150L/OAEQ046002L
■Type A■Type B
OAE046154L/OAEQ046023L
■Type A■Type B

H46
Engine Generation/Motor Drive
The engine charges up the high-volt-
age battery. The motor power is used
to drive the vehicle.
(Engine ➞Battery ➞Wheel)
Engine Generation/Regeneration
The engine and regenerative brake
system charges up the high-voltage
battery.
(Engine & Wheel ➞Battery)
Engine Brake/Regeneration
The engine braking is simultaneously
used to decelerate the vehicle and to
charge up the high-voltage battery.
(Wheel ➞Engine & Battery)
DRIVING THE HYBRID/PLUG-IN HYBRID VEHICLE (CONT.)
OAE046155L/OAEQ046024L
■Type A■Type B
OAE046155L/OAEQ046007L
■Type A■Type B
OAE046151L/OAEQ046003L
■Type A■Type B

H47
High Voltage Battery System
OAEPHQ016040L
Never touch orange colored or
high voltage labeled compo-
nents, including wires, cables,
and connections. When the insu-
lators or covers are damaged or
removed, severe injury or death
from electrocution may occur.
WARNING
While replacing the fuses in the
engine compartment, never
touch the HPCU. The HPCU car-
ries high voltage. Touching the
HPCU may result in electrocu-
tion, serious injury, or death.
WARNING OAEQ046019
■ High voltage battery system *2■ HPCU (Hybrid Power Control Unit) *1
SAFETY PRECAUTIONS FOR HYBRID SYSTEM
Hybrid Vehicle Components Safety Precautions
*1: Located in the engine compartment
*
2: Located under the rear seats

H48
SAFETY PRECAUTIONS FOR HYBRID SYSTEM (CONT.)
*3: Located in the engine compartment
OAEQ046017
■ Drive motor *3
•Do not disassemble the high
voltage motor connector. The
high voltage motor connector
may contain 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.
WARNING
•Do not pile up any items in an
area behind the high voltage
battery. In a crash, the battery
may become unstable, or its
performance may degrade.
•Do not apply strong force nor
pile up any items above the
luggage compartment. Such
an attempt may distort the
high voltage battery case,
causing a safety problem or
degrading the performance.
•Be careful when loading flam-
mable liquid in luggage com-
partment. It could cause oper-
ational and safety degrada-
tion if the liquid leaks and
flows in high voltage battery.
CAUTION
In the hybrid system, the hybrid
battery 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.
When you touch the hybrid bat-
tery system, serious injury or
death may occur.
WARNING

H49
• When the vehicle is paint baked,
do not bake over 30 minutes in
70°C (158°F) or 20 minutes in
80°C (176°F) degree.
• Do not wash the engine compart-
ment, using water. Water may
cause an electric shock to and
damage the electronic.
NOTICE
•Never use the package mod-
ules (high voltage battery,
inverter and converter) for any
other purpose.
•Do not use an unauthorized
battery charger to charge the
high voltage battery. Doing so
may result in death or serious
injury.
•Never locate the high voltage
system near or in a fire.
•Never drill into or strike the
package module. Otherwise, it
may be damaged. An electric
shock may occur, resulting in
serious injury or death.
WARNING
•Do not disassemble or assem-
ble the high voltage battery
system. Doing so may result
in electric shock, causing
death or serious injury.
•If you disassemble or assem-
ble hybrid system compo-
nents improperly, it may dam-
age the performance and reli-
ability 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 exam-
ined by a doctor as soon as
possible.
WARNING
Never assemble or disassemble
the high voltage battery system.
•If you assemble or disassem-
ble the high voltage battery
system, the durability and per-
formance 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
battery and high voltage cable
connected to motor (orange
color). Severe burns and elec-
tric shock may occur. For your
safety, do not touch the cover
of electronic components and
electronic cable. Do not remove
the cover of electronic compo-
nents and electronic cable. In
particular, never touch the high
voltage battery system when
the hybrid system in operation.
It may result in death or serious
injury.
WARNING

H50
Service Plug
Never touch the service plug.
Service plug is attached to high
voltage hybrid battery system.
Touching the service plug will
result in death or serious injury.
Service personnel should follow
procedure in service manual.
DANGER
OAEQ046018
SAFETY PRECAUTIONS FOR HYBRID SYSTEM (CONT.)
(Continued)
•Do not drop water or liquid on
to HPCU, HSG, motor and
fuses. The hybrid system com-
ponents are covered. If you
drop water or liquid on to
hybrid system components, it
may result in electric shock.
This hybrid vehicle uses the
hybrid battery system inverter
and converter to generate high
voltage. High voltage in the
hybrid battery system is very
dangerous and may cause
severe burns and electric
shock. This may result in seri-
ous injury or death.
•For your safety, never touch,
replace, disassemble or remove
the hybrid battery system
including components, cables
and connectors. Severe burns
or electric shock may result in
serious injury or death when
you fail to follow this warning.
•When the hybrid battery sys-
tem operates, the hybrid bat-
tery system can be hot. Always
be careful because burns or
electric shock may be caused
by high voltage.
(Continued)
WARNING