key battery HYUNDAI TUCSON HYBRID 2021 Owners Manual

Foreword / Hybrid System Overview
1-10
Starting the vehicle
Vehicles with smart key system
1. Carry the smart key or leave it inside
the vehicle.
2. Make sure the parking brake is firmly
applied.
3. Make sure the shift button is in P
(Park). With the shift button in N
(Neutral), you cannot start the vehicle.
4. Depress the brake pedal.
5. Press the Engine Start/Stop button.
If the hybrid system starts, the “”
indicator will come on.
Whether the engine is cold or warm, it
should be started without depressing
the accelerator.
After following the start procedures,
“
” indicator on the instrument
cluster will turn on. For more details,
please check chapter 6.
ECONOMICAL and SAFE OPERATION of
Hybrid system
• Drive smoothly. Accelerate at a
moderate rate and maintain a steady
cruising speed. Do not make “jack-
rabbit” starts. Do not race between
stoplights.
Avoid heavy traffic whenever possible.
Always maintain a safe distance
from other vehicles so you can
avoid unnecessary braking. This also
reduces brake wear out.
• The regenerative brake generates
energy when the vehicle decelerates.
• When the hybrid battery power is
low, the hybrid system automatically
recharges the hybrid battery.
• When the engine is running with the
shift button in N (Neutral), the hybrid
system cannot generate electricity.
The hybrid battery cannot recharge
with the shift button in N (Neutral).
Information
In the hybrid system, the engine
automatically runs and stops. When
the hybrid system operates, the “
”
indicator is illuminated.
In the following situation, the engine may
operate automatically.
- When the engine is ready to run
-When the hybrid battery is being
charged
-Depending on the temperature
condition of the hybrid battery
Special features
Hybrid vehicles sound different than
gasoline engine vehicles. When the
hybrid system operates, you may
hear a sound from the hybrid battery
system under the floor. If you apply
the accelerator pedal rapidly, you may
hear an unconventional sound. When
you apply the brake pedal, you may
hear a sound from the regenerative
brake system. When the hybrid system
is turned off or on, you may hear a
sound in the engine compartment. If
you depress the brake pedal repeatedly
when the hybrid system is turned on,
you may hear a sound in the engine
compartment. None of these sounds
indicate a problem. These are normal
characteristics of hybrid vehicles.
If any of following occur, it’s a normal
condition if you hear a motor sound in
the engine compartment:
-After turning off the hybrid system,
the brake pedal is released.
-When the hybrid system is turned off,
the brake pedal is applied.
-When the driver door is opened.
DRIVING THE HYBRID VEHICLE

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.

Immobilizer indicator light (with smart key) ..........................................................4-20
Downhill Brake Control (DBC) indicator light ........................................................4-20
Turn signal indicator light ........................................................................\
.................4-21
High beam indicator light ........................................................................\
................4-21
Low beam indicator light ........................................................................\
.................4-21
Light ON indicator light ........................................................................\
....................4-21
High Beam Assist indicator light ........................................................................\
......4-21
Cruise indicator light ........................................................................\
.......................4-21
SPORT Mode indicator light ........................................................................\
............4-22
ECO Mode indicator light ........................................................................\
................4-22
SMART Mode indicator light ........................................................................\
...........4-22
LCD display messages ........................................................................\
.......................4-22
Shift to P ........................................................................\
...........................................4-22
Low key battery ........................................................................\
................................4-22
Press START button while turning wheel ...............................................................4-22
Check steering wheel lock system ........................................................................\
.4-22
Press brake pedal to start engine ........................................................................\
...4-23
Key not in vehicle ........................................................................\
.............................4-23
Key not detected ........................................................................\
..............................4-23
Press START button again ........................................................................\
...............4-23
Press START button with key ........................................................................\
...........4-23
Check BRAKE SWITCH fuse
........................................................................\
............4-23
12V battery discharging due to additional electrical devices ...............................4-23
Door, Hood, Liftgate open indicator .......................................................................4-24
Sunroof open indicator ........................................................................\
....................4-24
Low pressure ........................................................................\
....................................4-24
Wiper/Lights display ........................................................................\
........................4-25
Low washer fluid ........................................................................\
..............................4-25
Low fuel ........................................................................\
............................................4-25
Engine has overheated ........................................................................\
....................4-25
Check exhaust system ........................................................................\
.....................4-25
Check headlight ........................................................................\
...............................4-25
Check turn signal ........................................................................\
.............................4-25
Check brake light ........................................................................\
.............................4-25
Check headlamp LED ........................................................................\
......................4-26
Check Active Air Flap system ........................................................................\
..........4-26
Ready to start driving ........................................................................\
......................4-26
Check regenerative brakes ........................................................................\
.............. 4-26
Stop vehicle and check brakes
........................................................................\
.......4-26
Check Hybrid system ........................................................................\
.......................4-26
Stop safely and check Hybrid system ....................................................................4-26
Check Hybrid system. Do not start engine ............................................................4-26
4

Instrument cluster
4-22
SPORT Mode indicator light
This indicator light illuminates
When you select "SPORT" mode as drive
mode.
For more details, refer to "Drive Mode
Integrated Control System" in chapter
6.
SMART Mode indicator light
This indicator light illuminates:
When you select ''SMART" mode as drive
mode.
For more details, refer to "Drive Mode
Integrated Control System'' in chapter
6.
LCD display messages
Shift to P (if equipped)
This message is displayed if you try to
turn off the vehicle without the shift
button in the P (Park) position.
If this occurs, the Engine Start/Stop
button turns to the ACC position.
Low key battery (if equipped)
When the Engine Start/Stop button
is pressed to turn OFF the engine,
this message may be displayed. This
message indicates that the internal
battery of the Smart Key is low. Consider
replacing the Smart Key internal battery.
Press START button while turning
wheel (if equipped)
This message is displayed if the steering
wheel does not unlock normally when
the Engine Start/Stop button is pressed.
You should press the Engine Start/Stop
button while turning the steering wheel
right and left.
Check steering wheel lock system (if
equipped)
This message is displayed if the steering
wheel does not lock normally while the
Engine Start/Stop button is pressed to
the OFF position.

04
4-23
Press brake pedal to start engine (if
equipped)
This message is displayed if the Engine
Start/Stop button changes to the ACC
position twice by pressing the button
repeatedly without depressing the brake
pedal.
You can start the vehicle by depressing
the brake pedal and then pressing the
Engine Start/Stop button.
Key not in vehicle (if equipped)
This message is displayed if the smart
key is not in the vehicle when you press
the Engine Start/ Stop button.
When attempting to start the vehicle,
always have the smart key with you.
Key not detected (if equipped)
This message is displayed if the smart
key is not detected when you press the
Engine Start/Stop button.
Press START button again (if
equipped)
This message is displayed if you were
unable to start the vehicle when the
Engine Start/Stop button was pressed.
If this occurs, attempt to start the engine
by pressing the Engine Start/ Stop button
again.
If the warning message appears each
time you press the Engine Start/Stop
button, we recommend that you have
the vehicle inspected by an authorized
HYUNDAI dealer.
Press START button with key (if
equipped)
This message is displayed if you press
the Engine Start/Stop button while the
warning message “Key not detected” is
displayed.
At this time, the immobilizer indicator
light blinks.
Check BRAKE SWITCH fuse (if
equipped)
This message is displayed if the brake
switch fuse is disconnected.
You need to replace the fuse with a new
one before starting the engine.
If that is not possible, you can start the
engine by pressing the Engine Start/
Stop button for 10 seconds in the ACC
position.
12V battery discharging due to
additional electrical devices (if
equipped)
This message is displayed if the 12V
battery voltage is weak due to any
non-factory electrical accessories (ex.
dashboard camera) while parking. Be
careful that the battery is not discharged.
If the message appears after removing
the non-factory electrical accessories,
we recommend that you have the vehicle
inspected by an authorized HYUNDAI
dealer.

05
5-5
Liftgate unlocking
To unlock:
1.
Press the Lift
gate Unlock button (3)
on the remote key for more than one
second.
2.
The hazard w

arning liftgate will blink
two times. Once the liftgate is opened
and then closed, the liftgate will lock
automatically.
Information
• After unlocking the liftgate, the liftgate
will lock automatically.
• The word “HOLD” is written on the
button to inform you that you must
press and hold the button for more
than one second.
Panic alarm
The horn sounds and the hazard warning
lights blink for about 30 seconds if this
button is pressed for more than 1 second.
To stop the horn and lights, press any
button on the transmitter.
Start-up
For detailed information refer to “Key
Ignition Switch” in chapter 6.
NOTICE
To prevent damaging the remote key:
• Keep the remote key away from
liquids or any type of extreme heat.
If water or liquid gets inside of the
remote or if the remote is subjected
to extreme heat, damage to the
internal circuit may result. This
would void the vehicle warranty.
• Avoid dropping or throwing the
remote key.
• Protect the remote key from extreme
temperatures.
Mechanical key (if equipped)
OIG046004
If the remote key does not operate
normally, you can lock or unlock the door
by using the mechanical key.
To unfold the key, press the release
button then the key will unfold
automatically.
To fold the key, fold the key manually
while pressing the release button.
NOTICE
Do not fold the key without pressing the
release button. This may damage the
key.
Remote key precautions
The remote key will not work if any of the
following occur:
• The key is in the ignition switch.
• You exceed the operating distance
limit (about 30 feet [10 m]).
• The remote key battery is weak.
• Other vehicles or objects may be
blocking the signal.
• The weather is extremely cold.
• The remote key is close to a radio
transmitter such as a radio station or
an airport which can interfere with
normal operation of the remote key.

Convenient features
5-6
When the remote key does not work
correctly, unlock and lock the door
with the mechanical key. If you have
a problem with the remote key, it is
recommended that you contact an
authorized HYUNDAI dealer.
If the remote key is in close proximity to
your mobile phone, the signal could be
blocked by your mobile phone’s normal
operational signals.
This is especially important when the
phone is active such as making and
receiving calls, text messaging, and/ or
sending/receiving emails.
Avoid placing the remote key and your
mobile phone in the same location and
always try to maintain an adequate
distance between the two devices.
Information
This device complies with Part 15 of the
FCC rules.
Operation is subject to the following three
conditions:
1.
This device may not cause harmful
interference.
2.
This device must accept any
interference r

eceived, including
interference that may cause undesired
operation.
3.
Changes or modifications not expr

essly
approved by the party responsible
for compliance could void the user’s
authority to operate the device.
NOTICE
Keep the remote key away from
electromagnetic materials that block
electromagnetic waves to the key
surface.
Battery replacement
OPD046002
Battery Type: CR2032
1.
Insert a slim tool in

to the slot and
gently pry open the cover.
2.
Remo

ve the old battery and insert the
new battery. Make sure the battery
position is correct.
3.
Reins

tall the rear cover of the remote
key.
If you suspect your remote key might
have sustained some damage, or you feel
your remote key is not working correctly,
it is recommended that you contact an
authorized HYUNDAI dealer.
Information
An inappropriately disposed
battery can be harmful to
the environment and human
health. Dispose of the battery
according to your local law(s)
and regulation.

05
5-13
Mechanical key
If the Smart Key does not operate
normally, you can lock or unlock the
driver’s door by using the mechanical
key.
To remove the mechanical key from the
smart key FOB:
OFE048007
Press and hold the release button (1) and
remove the mechanical key (2). Insert the
mechanical key into the key hole on the
door.
Key Cylinder (Driver Door)
A key cylinder is located on the driver
side door handle hidden behind a plastic
cover. Using the mechanical key, push
and hold the key cylinder cover release
button located on the underside of the
door handle.
Use the mechanical key inserted into
the release button slot to pry the cover
outward. Once the cover is off, the
mechanical key can be inserted into the
key cylinder to lock or unlock the vehicle.
To reinstall the mechanical key into the
key FOB, put the key into the key FOB
hole and push inward until a click sound
is heard.
Loss of a smart key
A maximum of two smart keys can be
registered to a single vehicle. If you
happen to lose your smart key, it is
recommended that you immediately take
the vehicle and remaining key to your
authorized HYUNDAI dealer or tow the
vehicle, if necessary.
Smart key precautions
The smart key may not work if any of the
following occur:
• The smart key is close to a radio
transmitter such as a radio station or
an airport which can interfere with
normal operation of the transmitter.
• The smart key is near a mobile two
way radio system or a mobile phone.
• Another vehicle’s smart key is being
operated close to your vehicle.
• The vehicle battery is discharged.
If the smart key does not work correctly,
open and close the door with the
mechanical key. If you have a problem
with the smart key, it is recommended to
contact an authorized HYUNDAI dealer.
If the smart key is in close proximity to
your mobile phone, the signal could be
blocked by your mobile phone’s normal
operational signals. This is specifically
relevant when the phone is active such
as making and receiving calls, text
messaging, and/or sending/receiving
emails. When possible, avoid keeping the
smart key and your mobile phone in the
same location such as a pants or jacket
pocket in order to avoid interference
between the two devices.

Convenient features
5-14
Information
This device complies with Part 15 of the
FCC rules.
Operation is subject to the following three
conditions:
1.
This device may not cause harmful
interference.
2.
This device must accept any
interference r

eceived, including
interference that may cause undesired
operation.
3.
Changes or modifications not expr

essly
approved by the party responsible
for compliance could void the user’s
authority to operate the device.
NOTICE
• Keep the smart key away from
electromagnetic materials that
blocks electromagnetic waves to the
key surface.
• Always have the smart key with
you when leaving the vehicle. If the
smart key is left near the vehicle, the
vehicle battery may be discharged.
Battery replacement
If the Smart Key is not working properly,
try replacing the battery with a new one.
Battery Type: CR2032
To replace the battery:
ODN8059266
Battery Type: CR2032
To replace the battery:
1.
Remo

ve the mechanical key.
2.
Use a slim t

ool or utility blade to pry
open the cover of the smart key. Use
caution not to damage the smart key.
3.
Remo

ve the old battery and insert the
new battery. Make sure the battery
position is correct.
4.
Reins

tall the rear cover of the smart
key.
If you suspect your smart key might have
sustained some damage, or you feel
your smart key is not working correctly,
it is recommended that you contact an
authorized HYUNDAI dealer.
Information
An inappropriately disposed
battery can be harmful to
the environment and human
health. Dispose of the battery
according to your local law(s) or
regulations.

05
5-19
Set up main vehicle
You can manage multiple digital keys
from the Digital key app. From the list of
digital keys you own, select the vehicle
you want to make your priority vehicle.
For more information, please refer to
the ‘Tutorial’ on your Digital key app.
ONX4050001
[1] : Door handle authentication pad
NFC door lock/unlock
To unlock your vehicle using the
smartphone Digital Key, position your
phone near the door handle NFC touch
sensor of either the driver side or
passenger side door. Hold your phone
near the touch sensor area for about 2
seconds. You will hear the doors lock or
unlock.
If you unlock your vehicle from the
passenger side door handle, then all the
doors will unlock. If you unlock your
vehicle from the driver side door handle,
then either the driver door only or all
the doors will unlock depending on the
setting of the Two Press Unlock feature.
Refer to User Settings to change the
Driver Door unlock mode.
To lock your vehicle using the
smartphone Digital Key, position your
phone near the door handle NFC touch
sensor of either the driver side or
passenger side door. Before you leave your vehicle, verify that
your vehicle is locked. When using your
smartphone Digital Key on the front door
handle, listen to hear that the door lock
has actuated, and then pull the handle
within 3 seconds to confirm the doors
are locked.
Note that you will not be able to lock
your vehicle using your smartphone
Digital Key under the following
circumstances:
•
The Proximity / Smart Key is in the
vehicle.
• The POWER button is in ACC or ON
position.
• Any of the doors, hood and trunk is
opened.
• The vehicle battery is discharged
If the smartphone Digital Key does not
work properly, try again by removing the
smartphone away from the door handle
(more than 4 inches) and try it again.
Note that when the doors have been
unlocked using the smartphone Digital
Key, the Lock/Unlock switch on the driver
door may not be immediately available.
(If you attempt to lock the doors using
the driver door lock switch, the doors will
lock and then immediately unlock when
you close the door.)