engine HYUNDAI TUCSON HYBRID 2023 User Guide

01
1-53
Plug-in Hybrid Mode (Plug-in
hybrid vehicle)
„„EV/HEV buttonEV/HEV button
ONX4EPHQ011012LONX4EPHQ011012L
Pressing the [EV/HEV] button changes
the plug-in hybrid system modes,
between Electric (CD) mode and Hybrid
(CS) mode.
Each time the mode is changed a
corresponding indicator is displayed on
the instrument cluster as follows.
„„AUTO mode AUTO mode ••Type AType A••Type BType B
ONX4EPHQ011013LONX4EPHQ011013LONX4EPHQ011014LONX4EPHQ011014L
„„CS mode CS mode ••Type AType A••Type BType B
ONX4EPHQ011015LONX4EPHQ011015LONX4EPHQ011016LONX4EPHQ011016L
Plug-in hybrid mode indicator
• CD (Charge Depleting, Electric) mode : The high-
voltage (hybrid)
battery is used to drive the vehicle.
• AUTO mode : CD mode and CS mode are selected automatically depending
on road conditions.
• CS (Charge Sustaining, Hybrid) mode : The high-voltage (hybrid) battery and
gasoline engine is used to drive the
vehicle.
Information
Even when the battery charging rate
is high and driving in electric mode is
possible, engine may turn on in some areas
to protect the system.

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-58
Stop safely and check Hybrid system
OOSHQ019007LOOSHQ019007L
This message is displayed when there
is a problem with the hybrid control
system. The “
” indicator will blink
and a warning chime will sound for
approximately 10 seconds until the
problem is solved. Refrain from driving
when the warning message is displayed.
If this occurs, have the vehicle inspected
by an authorized HYUNDAI dealer.
Check Hybrid system. Do not start
engine
OOSHQ019008LOOSHQ019008L
This message is displayed when the
hybrid battery power (SOC) level is low.
A warning chime will sound until the
problem is solved. Refrain from driving
when the warning message is displayed.
If this occurs, have the vehicle inspected
by an authorized HYUNDAI dealer.
Stop safely and check power supply
OOSHQ019009LOOSHQ019009L
This message is displayed when a failure
occurs in the power supply system.
If this occurs, park the vehicle in a safe
location and tow your vehicle to the
nearest authorized HYUNDAI dealer and
have the vehicle inspected.
Check virtual engine sound system
OOSHQ019010LOOSHQ019010L
This message is displayed when there is
a problem with the Virtual Engine Sound
System (VESS).
If this occurs, have the vehicle inspected
by an authorized HYUNDAI dealer.

01
1-59
Refill inverter coolant
OOSHQ019012LOOSHQ019012L
This message is displayed when the
inverter coolant is nearly empty.
You should refill the inverter coolant.
Park with engine On to charge
battery
OOSHQ019013LOOSHQ019013L
This message is displayed when the
hybrid battery power (SOC) level is low.
If this occurs, park the vehicle in a safe
location and wait until the hybrid battery
is charged.
Start engine to avoid battery
discharge
OOSHQ019027LOOSHQ019027L
This message is displayed to inform the
driver the 12V battery may be discharged
if the ignition switch is in ON position
(without the
indicator ON).
Set the vehicle to the ready (
) mode
to prevent the 12V battery from being
discharged.

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-60
Unplug vehicle to start (Plug-in
hybrid vehicle)
OAEPHQ049829LOAEPHQ049829L
This message is displayed when you
start the engine without unplugging the
charging cable. Unplug the charging
cable, and then start the vehicle.
Charging stopped. Check the AC
charger
OOSEV048131LOOSEV048131L
• This warning message is displayed when charging is stopped for the
reasons below:
- There is a problem with the external AC charger
- The external AC charger stopped charging
- The charging cable is damaged
In this case, check whether there is
any problem with the external AC and
charging cable.
If the same problem occurs when
charging the vehicle with a normally
operating AC charger or genuine
HYUNDAI portable charger, have your
vehicle inspected by an authorized
HYUNDAI dealer.

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-64
Low/High System Temp. Switching
to Hybrid mode (Plug-in hybrid
vehicle)
OAEPHQ049836LOAEPHQ049836LOAEPHQ049837LOAEPHQ049837L
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)
OAEPHQ049838LOAEPHQ049838L
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 protect
engine (Plug-in hybrid vehicle)
OAEPHQ049839LOAEPHQ049839L
This message is displayed when
the [HEV] button is pressed but it is
impossible to switch from the HEV mode
to EV mode due to engine lubrication.
Exit SPORT mode to switch to EV
(Plug-in hybrid vehicle)
OAEPHQ049840LOAEPHQ049840L
This message is displayed when [HEV]
button is pressed but it is impossible to
switch from the HEV mode to EV mode
because the SPORT mode is engaged.

01
1-65
Energy Flow
The hybrid system informs the drivers its
energy flow in various operating modes.
While driving, the current energy flow is
specified in 11 modes.
Vehicle stop
ONX4E040024ONX4E040024
The vehicle is stopped.
(No energy flow)
EV propulsion
ONX4EHQ010002ONX4EHQ010002
Only the motor power is used to drive the
vehicle.
(Battery
Ÿ Wheel)
Power assist
ONX4EHQ010003ONX4EHQ010003
Both the motor and the engine power are
used to drive the vehicle.
(Battery & Engine
Ÿ Wheel)
Engine only propulsion
ONX4EHQ010004ONX4EHQ010004
Only the engine power is used to drive
the vehicle.
(Engine
Ÿ Wheel)

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-66
Engine generation
ONX4EHQ010005ONX4EHQ010005
When the vehicle is stopped, the high-
voltage battery is charged up by the
engine.
(Engine
Ÿ Battery)
Regeneration
ONX4EHQ010006ONX4EHQ010006
The high-voltage battery is charged up
by the regenerative brake system.
(Wheel
Ÿ Battery)
Engine brake
ONX4EHQ010007ONX4EHQ010007
The engine braking is used to decelerate
the vehicle.
(Wheel
Ÿ Engine)
Power reserve
ONX4EHQ010008ONX4EHQ010008
The engine is simultaneously used to
drive the vehicle and to charge up the
high-voltage battery.
(Engine
Ÿ Wheel & Battery)

01
1-67
Engine generation/motor drive
ONX4EHQ010009ONX4EHQ010009
The engine charges up the high-voltage
battery. The motor power is used to drive
the vehicle.
(Engine
Ÿ Battery
Ÿ Wheel)
Engine generation/regeneration
ONX4E040025ONX4E040025
The engine and regenerative brake
system charges up the high-voltage
battery.
(Engine & Wheel
Ÿ Battery)
Engine brake/regeneration
ONX4EHQ010010ONX4EHQ010010
The engine braking is simultaneously
used to decelerate the vehicle and to
charge up the high-voltage battery.
(Wheel
Ÿ Engine & Battery)

01
1-69
SAFETY PRECAUTIONS FOR HYBRID SYSTEM
Hybrid Vehicle Components
High voltage battery system
„„HPCU (Hybrid Power Control Unit) HPCU (Hybrid Power Control Unit) **11
OTMHQ010013OTMHQ010013
„„High voltage battery system High voltage battery system *2 *2 (hybrid)(hybrid)
ONX4HQ010012ONX4HQ010012
„„High voltage battery system *High voltage battery system *33 (Plug-in hybrid (Plug-in hybrid vehicle)vehicle)
ONX4EPHQ011017LONX4EPHQ011017L
*1 :
Located in the engine compartment
*2 : Located under rear seat
*3 : Located under the front seat
WARNING
Never touch orange colored or high
voltage labeled components, including
wires, cables, and connections. When
the insulators 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 carries high voltage.
Touching the HPCU may result in
electrocution, serious injury, or death.
WARNING
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 battery system,
serious injury or death may occur.
CAUTION
• 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
flammable liquid in the passenger
compartment. It could cause
operational and safety degradation if
the liquid leaks and flows in the high
voltage battery.

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-70
„„Drive motor Drive motor *4*4
OTMHQ010015OTMHQ010015
*4 :
Located in the engine compartment
WARNING
• 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 disassemble or assemble
the 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 disassemble the
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 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 electric shock may
occur. For your safety, do not touch
the cover of electronic components
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 in
operation. It may result in death or
serious injury.
WARNING
• Never use the package modules
(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.