2021 HYUNDAI TUCSON HYBRID ignition

01
1-13
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.
-Blinking : Emergency driving.
When the ready indicator goes OFF
or blinks, there is a problem with the
system. If this occurs, we recommend
that you have your vehicle inspected by
an authorized HYUNDAI dealer.
EV mode indicator
This indicator illuminates:
When the vehicle is driven by the electric
motor.
Service warning light
This warning light illuminates:
• When you set the ignition switch or
the Engine 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, we recommend that
you have the vehicle inspected by an
authorized HYUNDAI dealer.
Regenerative brake warning
light
(yellow)
This warning light illuminates:
When the regenerative brake does not
operate 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.

Foreword / Hybrid System Overview
1-16
Refill inverter coolant
OOSHQ019012L
This message is displayed when the
inverter coolant is nearly empty.
You should refill the inverter coolant.
Park with engine On to charge
battery
OOSHQ019013L
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
OOSHQ019027L
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.

01
1-25
WARNING
If a fire occurs:
• If a small scale fire occurs, use a fire
extinguisher (ABC, BC) that is meant
for electrical fires.
If it is impossible to extinguish
the fire in the early stage, remain
a safe distance from the vehicle
and immediately call your local
fire emergency responders. Also,
advise them that a hybrid vehicle is
involved.
If the fire spreads to the high voltage
battery, large amount of water is
needed to put out the fire.
Using small amount of water or
fire extinguishers not meant for
electrical fires could cause serious
injury or death from electrical
shocks.
• Upon witnessing any sparks, gases,
flames, or fuel leakage of your
vehicle, immediately call emergency
services or contact an authorized
HYUNDAI dealer. Also, advise them
that a hybrid vehicle is involved.
WARNING
When a submersion in water occurs:
When your vehicle is flooded in water, a
high-voltage battery may cause shock
or fires. Thus, turn the hybrid system
OFF, take the key in your possession and
escape to a safe place. Never attempt
physical contact with your flooded
vehicle.
Immediately contact an authorized
HYUNDAI dealer and advise them that a
hybrid vehicle is involved.
When the hybrid vehicle shuts
off
When the high voltage battery or 12 volt
battery is discharged, or when the fuel
tank is empty, the hybrid system may
not operate while driving. When the
Hybrid system does not operate, do the
following:
1. Gradually reduce the vehicle speed.
Pull over your vehicle off the road in a
safe area.
2. Make sure the shift button is in P
(Park).
3. Turn ON the hazard warning flashers.
4. Turn OFF the vehicle, and try to
start the hybrid system again, while
depressing the brake pedal and
turning on the ignition switch.
5. When the hybrid system still does
not operate, refer to “Jump starting”
section in chapter 8.
Before jump-starting the vehicle,
check the fuel level and the exact
procedure to jump start. For further
details, refer to “Jump starting”
section in chapter 8. When the fuel
level is low, do not attempt to drive
the vehicle only with the battery
power. The high voltage battery may
be discharged, and the hybrid system
will turn OFF.

03
3-19
„„Front seat
ONX4030025
„„Rear seat
ONX4030026
While the engine is running, push either
of the switches to warm the driver's seat
or front passenger's seat.
During mild weather or under conditions
where the operation of the seat warmer
is not needed, keep the switches in the
OFF position.
• Manual temperature control
Each time you push the switch, the
temperature setting of the seat is
changed as follows :
- Fr

ont seat
OFF
LOW ( )HIGH ( )
MIDDLE ( )
- Rear seat
OFF → HIGH ( ) → LOW ( )
• Automatic temperature control
The seat warmer starts to
automatically control the seat
temperature in order to prevent
low-temperature burns after being
manually turned ON.
- Fr

ont seat
OFF →
←
↑
↓ 30 MIN
60 MIN
LOW ( )
HIGH ( )
MIDDLE ( )
- Rear seat
OFF → HIGH ( ) → LOW ( )30 MIN
If HIGH temperature is manually
selected again, the temperature will
be controlled automatically.
• When pressing the switch for more
than 1.5 seconds with the seat warmer
operating, the seat warmer will turn
OFF.
• The seat warmer defaults to the OFF
position whenever the ignition switch
is ON.

Seats & Safety System
3-20
• Auto Comfort Control (for driver’s
seat) (if equipped)
- The seat w

armer automatically
controls the seat temperature
depending on the ambient
temperature and the set climate
control temperature when the
engine is running. If the seat
warmer switch is pushed, the seat
warmer will have to be controlled
manually.
To use this function, it must be
activated from the Settings menu in
the AV/AVN system screen.
- The seat w

armer defaults to the
OFF position whenever the ignition
switch is ON. However, if the Auto
Comfort Control function is ON, the
driver’s seat warmer will turn on
and off depending on the ambient
temperature and the set climate
control temperature.
For more details, refer to the separately
supplied Infotainment manual with
your vehicle.
Information
With the seat warmer switch in the ON
position, the heating system in the seat
turns off or on automatically depending on
the seat temperature.
Air ventilation seat (if equipped)
ONX4030027
The air ventilation seats are provided
to cool the front seats by blowing air
through small vent holes on the surface
of the seat cushions and seatbacks.
When the operation of the air ventilation
seat is not needed, keep the switches in
the OFF position.
While the engine is running, push the
switch to cool the driver's seat or the
front passenger's seat (if equipped).
NOTICE
To prevent damage to the air ventilation
seats:
• Never use a solvent such as paint
thinner, benzene, alcohol or gasoline
to clean the seats.
• Avoid spilling liquids on the surface
of the front seats and seatbacks; this
may cause the air vent holes to block
and not work properly.
• Do not place materials such as
plastic bags or newspapers under
the seats. They may block the air
intake causing the malfunction of the
air vent.
• Do not change the seat covers. It may
damage the air ventilation seat.
• If the air vents do not operate, restart
the vehicle. If there is no change,
we recommend your vehicle to be
inspected by an authorized HYUNDAI
dealer.

03
3-21
• Each time you push the switch, the
airflow changes as follows:
OFF
LOW ( )HIGH ( )
MIDDLE ( )
• When pressing the switch for
more than 1.5 seconds with the
air ventilation seat operating, the
operation will turn OFF.
• The air ventilation seat defaults to the
OFF position whenever the ignition
switch is placed to the ON position.
• Auto Comfort Control (for driver’s
seat) (if equipped)
- The air ven

tilation seat
automatically controls the seat
temperature depending on the
ambient temperature and the set
climate control temperature when
the engine is running. If the air
ventilation seat switch is pushed,
the air ventilation seat will have to
be controlled manually.
To use this function, it must be
activated from the Settings menu in
the AV/AVN system screen.
- The air ven

tilation seat defaults
to the OFF position whenever the
ignition switch is ON. However, if
the Auto Comfort Control function
is ON, the air ventilation seat will
turn on and off depending on the
ambient temperature and the set
climate control temperature.
For more details, refer to the separately
supplied Infotainment manual with
your vehicle.
Rear Occupant Alert (ROA) (if
equipped)
Rear Occupant Alert is provided to
prevent a driver from leaving a vehicle
with the rear passenger left in the
vehicle.
System setting
To use Rear Occupant Alert, it must be
enabled from the Settings menu in the
infotainment system screen. Select:
- Setup → V

ehicle
Se
ttings
→ Conv

enience
→ R
ear
Occupan
t
Alert
F

or detailed information, scan the QR
code in the separately supplied simple
manual.
System operation
• First alert
When you turn off the engine and
open the driver’s door after opening
and closing the rear door or liftgate,
the ‘Check rear seats’ warning
message appears on the cluster.
• Second alert
After the first alert, the second alert
operates when any movement is
detected in the vehicle after the
driver’s door is closed and all the
doors are locked. The horn will sound
for approximately 25 seconds. If
the system continues to detect a
movement, the alert operates up to 8
times.
Unlock the doors with the smart key
to stop the alert.
• The system detects movement in the
vehicle for 8 hours after the door is
locked.
• The second alert is activated only after
the prior activation of the first alert.

Seats & Safety System
3-24
Seat belt warning light
Driver’s seat belt warning
„„Instrument cluster
1GQA2083
As a reminder to the driver, the seat
belt warning light will illuminate for
approximately 6 seconds each time the
ignition is ON position regardless of belt
fastening. At this time, if the seat belt is
not fastened a warning chime will sound
for 6 seconds.
If you continue not to fasten the seat belt
and you drive over 6 mph (9 km/h), the
warning light will stay illuminated.
If you continue not to fasten the seat belt
and you drive over 12 mph (20 km/h),
the seat belt warning chime will sound
for approximately 100 seconds and the
corresponding warning light will blink.
If you unfasten the seat belt while driving
under 12 mph (20 km/h), the seat belt
warning light will illuminate until the seat
belt is fastened.
If you unfasten the seat belt while
driving over 12 mph (20 km/h), the
seat belt warning chime will sound for
approximately 100 seconds and the
corresponding warning light will blink.
Front passenger’s seat belt warning
As a reminder to the front passenger,
the front passenger’s seat belt warning
lights will illuminate for approximately 6
seconds each time you place the ignition
switch to the ON position regardless of
belt fastening.
If you continue not to fasten the seat belt
and you drive over 6 mph (9 km/h), the
warning light will stay illuminated.
If you continue not to fasten the seat belt
and you drive over 12 mph (20 km/h),
the seat belt warning chime will sound
for approximately 100 seconds and the
corresponding warning light will blink.
If you unfasten the seat belt while driving
under 12 mph (20 km/h), the seat belt
warning light will illuminate until the seat
belt is fastened.
If you unfasten the seat belt while
driving over 12 mph (20 km/h), the
seat belt warning chime will sound for
approximately 100 seconds and the
corresponding warning light will blink.
WARNING
Riding in an improper position
adversely affects the front passenger’s
seat belt warning system. It is important
for the driver to instruct the passenger
to properly be seated as instructed in
this manual.
Information
• Although the front passenger seat is not
occupied, the seat belt warning light
will blink or illuminate for 6 seconds.
• The front passenger’s seat belt warning
may operate when luggage is placed on
the front passenger seat.

Seats & Safety System
3-50
How does the air bags system
operate?
ONX4030055
The SRS consists of the following
components:
(1)
Driver's fr
ont air bag module
(2) Passenger's front air bag module
(3) Side air bag modules
(4) Curtain air bag modules
(5) Retractor pre-tensioner
(6) Air bag warning light
(7) SRS control module (SRSCM)/
Rollover sensor
(8) Front impact sensors
(9) Side impact sensors
(10) Side pressure sensors
(11) Emergency fastening device system
(12) Occupant classification system
(13) Seat belt buckle sensor
The SRSCM continually monitors all SRS
components while the ignition switch
is ON to determine if a crash impact
is severe enough to require air bag
deployment or pre-tensioner seat belt
deployment.
SRS warning light
The SRS (Supplemental Restraint System)
air bag warning light on the instrument
panel displays the air bag symbol
depicted in the illustration. The system
checks the air bag electrical system for
malfunctions. The light indicates that
there is a potential problem with your
air bag system, which could include
your side and/or curtain air bags used
for rollover protection (if equipped with
rollover sensor).
WARNING
If your SRS malfunctions, the air bag
may not inflate properly during an
accident increasing the risk of serious
injury or death.
If any of the following conditions occur,
your SRS is malfunctioning:
• The light does not turn on for
approximately three to six seconds
when the Engine Start/Stop button is
in the ON position.
• The light stays on after illuminating
for approximately three to six
seconds.
• The light comes on while the vehicle
is in motion.
• The light blinks when the engine is
running.
We recommend that an authorized
HYUNDAI dealer inspect the SRS
as soon as possible if any of these
conditions occur.