auxiliary battery HYUNDAI TUCSON HYBRID 2023 Owners Manual

01
1-13
Charging Status
ONX4EPHQ011020LONX4EPHQ011020L
When charging the high voltage battery,
the charge level can be checked from
outside the vehicle.
ClassificationDetailsOperation of charging
indicator lamp
Mode Status Charging
inlet Charging
button
A READY N
on-charging
state 0 ~ 65 % On (Yellow) Off
65 ~ 100 % On (Green) Off
B Aux. Battery
Saver / High
voltage warning Charging the 12V auxiliary
battery / High voltage warning
state On (Red) Off
C Charging Charging 0 ~ 65 %
Blinking
(Yellow) Off
65 ~ 100 % Blinking
(Green) Off
D Charging
complete Charging
completed (turns
off in 5 seconds) 100 %
On (Green)
Ÿ
OFF Off
E Charging failed Error while charging Blinking
(Red) Off
F Scheduled
charging standby Reserved charging is operating
(turns OFF after 3 minutes) Off
ON
G Error CAN communication error
status On (Green)
Ÿ
On (Orange)

Ÿ On (Red) Off

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-22
Classification DetailsOperation of charging
indicator lamp
Mode Status Charging
inlet Charging
button
A READY N
on-charging
state 0 ~ 65 % On (Yellow) Off
65 ~ 100 % On (Green) Off
B Aux. Battery
Saver / High
voltage warning Charging the 12V auxiliary
battery / High voltage warning
state On (Red) Off
C Charging Charging 0 ~ 65 %
Blinking
(Yellow) Off
65 ~ 100 % Blinking
(Green) Off
D Charging
complete Charging
completed (turns
off in 5 seconds) 100 %
On (Green)
Ÿ
OFF Off
E Charging failed Error while charging Blinking
(Red) Off
F Scheduled
charging standby Reserved charging is operating
(turns OFF after 3 minutes) Off
ON
G Error CAN communication error
status On (Green)
Ÿ
On (Orange)

Ÿ On (Red) Off

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-30
Checking Charging Status
ONX4EPHQ011020LONX4EPHQ011020L
When charging the high voltage battery,
the charge level can be checked from
outside the vehicle.
Classification DetailsOperation of charging
indicator lamp
Mode Status Charging
inlet Charging
button
A READY N
on-charging
state 0 ~ 65 % On (Yellow) Off
65 ~ 100 % On (Green) Off
B Aux. Battery
Saver / High
voltage warning Charging the 12V auxiliary
battery / High voltage warning state On (Red) Off
C Charging Charging 0 ~ 65 %
Blinking
(Yellow) Off
65 ~ 100 % Blinking
(Green) Off
D Charging
complete Charging
completed (turns off in 5 seconds) 100 %
On (Green)
Ÿ
OFF Off
E Charging failed Error while charging Blinking
(Red) Off
F Scheduled
charging standby Reserved charging is operating
(turns OFF after 3 minutes) Off
ON
G Error CAN communication error
status On (Green)
Ÿ
On (Orange)
Ÿ On (Red) Off

01
1-41
ClassificationDetailsOperation of charging
indicator lamp
Mode Status Charging
inlet Charging
button
A READY N
on-charging
state 0 ~ 65 % On (Yellow) Off
65 ~ 100 % On (Green) Off
B Aux. Battery
Saver / High
voltage warning Charging the 12V auxiliary
battery / High voltage warning
state On (Red) Off
C Charging Charging 0 ~ 65 %
Blinking
(Yellow) Off
65 ~ 100 % Blinking
(Green) Off
D Charging
complete Charging
completed (turns
off in 5 seconds) 100 %
On (Green)
Ÿ
OFF Off
E Charging failed Error while charging Blinking
(Red) Off
F Scheduled
charging standby Reserved charging is operating
(turns OFF after 3 minutes) Off
ON
G Error CAN communication error
status On (Green)
Ÿ
On (Orange)

Ÿ On (Red) Off

01
1-51
When the hybrid system is turned ON,
the gasoline engine may run or may not.
In this situation, you may feel a vibration.
This does not indicate a malfunction.
When the “
” indicator illuminates, the
hybrid system is ready to begin driving.
Even if the engine is off, you can operate
the vehicle as long as the “
” indicator
is illuminated.
NOTICE
The hybrid system contains many
electronic components. High voltage
components, such as cables and other
parts, may emit electromagnetic waves.
Even when the electromagnetic cover
blocks electromagnetic emissions,
electromagnetic waves may have an
effect on electronic devices. When your
vehicle is not used for a long period of
time, the hybrid system will discharge.
You need to drive the vehicle several
times a month. Drive at least for 1 hour
or 10 miles. When the hybrid battery
is discharged, or when it is impossible
to jump start the vehicle, contact your
authorized HYUNDAI dealer.
WARNING
• When you start the hybrid system
with the shift button in P (Parking),
the “
” indicator illuminates on
the instrument cluster. The driver
can drive the vehicle, even when the
gasoline engine is off.
• When you leave the vehicle, you
should turn OFF the hybrid system
or locate the shift button in P (Park).
When you depress the accelerator
pedal by mistake, or when the shift
button is not in P (Park), the vehicle
will abruptly move, possibly resulting
in serious injury or death.
Virtual Engine Sound System (VESS)
The Virtual Engine Sound System
generates engine sound for pedestrians
to hear vehicle sound because there is
limited sound while motor power is used.
• When the engine is running, the gear
shift button is not in P (Park), the VESS
will operate.
• When the gear is shifted to R (Reverse), an additional warning
sound will be heard.
What does regenerative braking do?
It uses an electric motor when
decelerating and when braking and
transforms kinetic energy to electrical
energy in order to charge the high
voltage battery.
Battery
• Hybrid
- The vehicle is composed of a high
voltage battery that drives the motor
and air conditioner, and an integrated
12V lead battery with the HEV battery
that drives the lamps, wipers, and audio
system.
- The integrated 12V battery is automatically charged when the vehicle
is in the ready (
) mode.
• Plug-in hybrid vehicle
- The vehicle is composed of a high voltage battery that drives the
motor and air-conditioner, and an
auxiliary battery (12 V) that drives
the lamps, wipers, and audio
system.
- The auxiliary battery is automatically charged when the
vehicle is in the ready (
) mode.

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-54
Infotainment system Screen (Plug-in
hybrid vehicle) (if equipped)
OTMPHQ010018LOTMPHQ010018L
Press [PHEV] on the [Home] screen or
the [All menus] screen and the menus
related to plug-in hybrid ([ECO driving],
[Energy information], [EV range], [Set
charging times], [Charging stations],
[Petrol stations]) are displayed.
For more information, please refer to
the Infotainment System Manual that
was separately supplied with your
vehicle.
Aux. Battery Saver+ (Plug-in
hybrid vehicle)
The Aux. Battery Saver+ is a function that
monitors the charging status of the 12 V
auxiliary battery. If the auxiliary battery
level is low, the main high voltage battery
charges the auxiliary battery.
Information
The Aux. Battery Saver+ function will
be ON when the vehicle is delivered. If
the function is not needed, you may turn
it off in the Users Settings mode on the
cluster. For more information, refer to the
following page.
Mode
• Cycle Mode:
When the vehicle is OFF with all doors,
hood and liftgate closed, the Aux. Battery
Saver+ periodically activates according
to the auxiliary battery status.
• Automatic Mode:
When the ignition switch is in the ON
position with the charging connector
plugged in, the function activates
according to the auxiliary battery status
to prevent overdischarge of the auxiliary
battery.

01
1-55
Information
• The Aux. Battery Saver+ activates
maximum of 20 minutes. If the Aux.
Battery Saver+ function activates
more than 10 times consecutively, in
the Automatic Mode the function will
stop activating, judging that there is
a problem with the auxiliary battery.
In this case, drive the vehicle for some
period of time. The function will start
activating if the auxiliary battery
returns to normal.
• The Aux. Battery Saver+ function
cannot prevent battery discharge if the
auxiliary battery is damaged, worn out,
used as a power supply or unauthorized
electronic devices are used.
• If the Aux. Battery Saver+ function was
activated, the high voltage battery level
may have decreased.
System Setting
OAEPHQ049855LOAEPHQ049855L
The driver can activate the Aux. Battery
Saver+ function by placing the ignition
switch to the ON position and by
selecting:
‘User Settings
Ÿ Other
Ÿ Aux. Battery
Saver+’
The Aux. Battery Saver+ function
deactivates, when the driver cancels the
system setting.
WARNING
ONX4EPHQ011025LONX4EPHQ011025L
When the function is activating, the
charging indicator lamp will be on in
red and high voltage electricity will be
flowing in the vehicle. Do not touch
the high voltage electric wire (orange),
connector, and all electric components
and devices. This may cause electric
shock and lead to injuries. Also, do not
modify your vehicle in any way. This
may affect your vehicle performance
and lead to an accident.

Maintenance9-32
• The negative battery cable must
be removed first and installed last
when the battery is disconnected.
Disconnect the battery charger in the
following order:
1. Turn off the battery charger main
switch.
2. Unhook the negative clamp from the negative battery terminal.
3. Unhook the positive clamp from the positive battery terminal.
• Use batteries for replacement from
an authorized HYUNDAI dealer.
Hybrid vehicle
The 12V auxiliary battery of the vehicle
is integrated within the high-voltage
battery. The high-voltage battery is
located under the 2nd row seat cushion.
For battery related servicing, have you
the vehicle serviced by an authorized
HYUNDAI dealer.
12V auxiliary battery connector
ONX4H092026LONX4H092026L
Disconnect the 12V auxiliary battery
connector located inside the engine
room compartment to shut down the
power of the 12V auxiliary battery.
Connect the 12V auxiliary battery
connector again after the battery related
maintenance is finished.
CAUTION
• The efficiency of the battery
decreases during low temperature.
If the vehicle is not used for the
extended period of time, park the
vehicle indoors if possible.
• Always keep the battery charged to
the full capacity. The battery case
may damage due to freezing if the
battery capacity is low.
• Do not install unauthorized electrical
devices (for example, lamps,
dashcam, etc.) to a vehicle. It may
discharge the battery.