HYUNDAI TUCSON HYBRID 2023 Repair Manual

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-56
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.
When the ready indicator goes OFF,
there is a problem with the system. If this
occurs, have your vehicle inspected by
an authorized HYUNDAI dealer.
EV mode indicator
This indicator illuminates:
When the vehicle is driven by the electric
mo
tor.
Charging Cable Connection
Indicator (Plug-in hybrid
vehicle)
This indicator illuminates in red when the
charging cable is connected.
Service warning light
This warning light illuminates:
• When you set the ignition switch or the E
ngine Start/Stop button to the
ON position.

- The service warning light illuminates
for approximately 3 seconds and
then turns off when all checks have
been performed.
• 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 the vehicle inspected
by an authorized HYUNDAI dealer.
Regenerative brake warning
light
(yellow)
This warning light illuminates:
When the regenerative brake does not
oper
ate and the brake does not perform
well. This causes the Brake Warning
light (red) and Regenerative Brake
Warning Light (yellow) to illuminate
simultaneously.
If this occurs, drive safely and have
your vehicle inspected by an authorized
HYUNDAI dealer. The operation of the
brake pedal may be more difficult than
normal and the braking distance may
increase.

01
1-57
LCD Display Messages
Ready to start driving
OOSHQ019003LOOSHQ019003L
This message is displayed when the
vehicle is ready to be driven.
Check regenerative brakes
OOSHQ019004LOOSHQ019004L
This message is displayed when
the brake performance is low or the
regenerative brake does not work
properly due to a failure in the brake
system.
If this occurs, it may take longer for the
brake pedal to operate and the braking
distance may become longer.
Stop vehicle and check brakes
OOSHQ019006LOOSHQ019006L
This message is displayed when a failure
occurs in the brake 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 Hybrid system
OOSHQ019005LOOSHQ019005L
This message is displayed when there is a
problem with the hybrid control system.
Refrain from driving when the warning
message is displayed.
If this occurs, have the vehicle inspected
by an authorized HYUNDAI dealer.

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.

01
1-61
Charging stopped. Check the cable
connection
OOSEV048196LOOSEV048196L
This warning message is displayed
when charging is stopped because the
charging connector is not correctly
connected to the charging inlet
In this case, separate the charging
connector and re-connect it and check
whether there is any problem (external
damage, foreign substances, etc.) with
the charging connector and charging
inlet.
If the same problem occurs when
charging the vehicle with a replaced
charging cable or genuine HYUNDAI
portable charger, have your vehicle
inspected by an authorized HYUNDAI
dealer.
Remaining time (Plug-in hybrid
vehicle)
OAEPHQ049818LOAEPHQ049818L
This message is displayed to notify
the remaining time to fully charge the
battery.
Wait until fuel door opens (Plug-in
hybrid vehicle)
OAEPHQ049830LOAEPHQ049830L
This message is displayed when you
attempt to open the fuel filler door with
the fuel tank pressurized. Wait until the
fuel tank is depressurized.

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-62
NOTICE
• It may take up to 20 seconds to open
fuel filler door.
• When the fuel filler door is frozen
and does not open after 20 seconds
at freezing temperature, slightly tap
the fuel filler door and then attempt
to open it. In other cases, have your
vehicle inspected by an authorized
HYUNDAI dealer.
• Do not pry on the door. If necessary,
spray around the door with an
approved de-icer fluid (do not use
radiator anti-freeze) or move the
vehicle to a warm place and allow
the ice to melt.
Check fuel door (Plug-in hybrid
vehicle)
OAEPHQ049831LOAEPHQ049831L
The message is displayed when the fuel
filler door is open while in driving or an
abnormality has occurred.
Fuel door open (Plug-in hybrid
vehicle)
OAEPHQ049832LOAEPHQ049832L
This message is displayed when the
fuel filler door opens after the fuel tank
is depressurized. If this message is
displayed, you can refuel the fuel tank.
Shift to P to charge (Plug-in hybrid
vehicle)
OAEPHQ049833LOAEPHQ049833L
This message is displayed when the
charging connector is plugged with the
shift button in R (Reverse), N (Neutral)
or D (Drive). Move the shift button to P
(Park) and re-start the charging process.

01
1-63
Switching to Hybrid mode to allow
heating or air conditioning (Plug-in
hybrid vehicle)
OAEPHQ049842LOAEPHQ049842L
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 higher
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 conditioning (Plug-in
hybrid vehicle)
OAEPHQ049841LOAEPHQ049841L
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 [HEV] button to switch from the HEV
mode to EV mode while the heating and
cooling system is on and the coolant
temperature is below -14°C.
Low/High System Temp. Maintaining
Hybrid mode (Plug-in hybrid vehicle)
OAEPHQ049834LOAEPHQ049834LOAEPHQ049835LOAEPHQ049835L
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.

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.

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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)