2021 HYUNDAI I20 change key battery

5-19
05
LCD display messages
Key not in vehicle
(for smart key system)
This warning message is displayed if the
smart key is not in the vehicle when you
open or close door in the ACC position
or ON position. The warning sound is
heard when you close door without a
smart key in vehicle.
When attempting to start the vehicle
always have the smart key with you.
Key not detected
(for smart key system)
This warning message is displayed if
the smart key is not detected when you
press the Engine Start/Stop button.
Press START button with key (for
smart key system)
This warning 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.
Low key battery
(for smart key system)
This warning message is displayed if the
battery of the smart key is discharged
while changing the Engine Start/Stop
button to the OFF position.
Press brake pedal to start engine
(for smart key system and
Automatic transmission/Dual clutch
transmission)
This warning 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.
Press clutch pedal to start engine
(for smart key system and Manual
transmission)
This warning message is displayed if the
Engine Start/Stop button is in the ACC
position twice by pressing the button
repeatedly without depressing the clutch
pedal.
Depress the clutch pedal to start the
engine.
Press START button again
(for smart key system)
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
your vehicle inspected by an authorized
HYUNDAI dealer.

6-6
Convenient features
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 10 m [30 feet]).
• 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.
When the remote key does not work
correctly, open and close 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 phones 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
pants or jacket pocket and always try to
maintain an adequate distance between
the two devices.
i Information
Changes or modifications not expressly
approved by the party responsible
for compliance could void the user’s
authority to operate the equipment. If the
keyless entry system is inoperative due
to changes or modifications not expressly
approved by the party responsible for
compliance, it will not be covered by your
manufacturer’s vehicle warranty.
NOTICE
Keep the remote key away from
electromagnetic materials that blocks
electromagnetic waves to the key
surface.

6-98
Convenient features
i Information
- About handling the system
• Do not apply excessive force to the
system. Excessive pressure on the
screen may damage the LCD panel or
the touch panel.
• When cleaning the screen or button
panel, make sure to stop the engine
and use a soft, dry cloth. Wiping the
screen or buttons with a rough cloth or
using solvents (alcohol, benzene, paint
thinner, etc.) may scratch or chemically
damage the surface.
• If you attach a liquid-type air freshener
to the fan louvre, the surface of the
louvre may become deformed due to
the flowing air.
• If you want to change the position of
the installed device, please inquire
with your place of purchase or service
maintenance centre. Technical expertise
is required to install or disassemble the
device.
NOTICE
• If you experience any problems with
the system, contact your place of
purchase or dealer.
• Placing the audio system within an
electromagnetic environment may
result in noise interference.
Turning the system on or off
To turn on the system, start the engine.
• If you do not want to use the system
while driving, you can turn off the
system by pressing the [POWER]
button on the control panel. To use
the system again, press the [POWER]
button again.
After you have turned off the engine, the
system will automatically turn off after a
while or as soon as you open the driver’s
door.
• Depending on the vehicle model or
specifications, the system may turn
off as soon as you turn off the engine.
• When you turn back on the system,
the previous mode and settings will
remain intact.
WARNING
• Some functions may be disabled for
safety reasons while the vehicle is
moving. They work only when the
vehicle stops. Park your vehicle in
a safe location before using any of
them.
• Stop using the system if it
malfunctions, such as no audio
output or display. If you continue
using the system when it is
malfunctioning, it may lead to a fire,
electric shock, or system failure.
i Information
You can turn on the system when the key
ignition switch is placed in the “ACC”
or “ON” position. Using the system for
an extended period without the engine
running drains the battery. If you plan on
using the system for a long time, start the
engine.

6-108
Convenient features
3. Enter or confirm the passkey to
confirm the connection.
• If the passkey input screen is
displayed on the Bluetooth device
screen, enter the passkey ‘0000’
which is displayed on the system
screen.
• If the 6-digit passkey is displayed
on the Bluetooth device screen,
ensure that the Bluetooth passkey
displayed on the Bluetooth device
is the same as the passkey on the
system screen and confirm the
connection from the device.
NOTICE
• The screen image in this manual is an
example. Check your system screen
for the exact vehicle name and
Bluetooth device name.
• The default passkey is ‘0000’.
• It may take a while for the system
to connect with the device after
you permit the system to access the
device. When a connection is made,
the Bluetooth status icon appears at
the top of the screen.
• You can change the permission
settings via the mobile phone’s
Bluetooth settings menu. For more
information, refer to your mobile
phone’s user guide.
• To register a new device, repeat
steps 1 to 3.
• If you use the automatic Bluetooth
connection function, a call may be
switched to the vehicle’s Handsfree
when you are taking on the phone
near the vehicle while the vehicle’s
engine is on. If you do not want the
system to connect with the device
automatically, deactivate Bluetooth
on your device.
• When a device is connected to the
system via Bluetooth, the device’s
battery may discharge faster.
Connecting a paired device
To use a Bluetooth device on your
system, connect the paired device to the
system. Your system can connect with
only one device at a time.
1. From the control panel, press the
[PHONE] button, and then select
Phone settings X Paired devices.
• If there is no connected device,
press the Call/Answer button on the
steering wheel.
2. Turn the [TUNE] knob to select the
device to connect, and then press the
knob.
• If another device is already
connected to your system,
disconnect it. Select the connected
device to disconnect.
NOTICE
• If a connection ends because a
device is out of the connection
range or a device error occurs,
the connection will be restored
automatically when the device
enters the connection range or when
the error is cleared.
• Depending on auto connection
priority, connection to a device may
take time.

7-53
07
Winter precautions
Use high quality ethylene glycol
coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because it
helps prevent corrosion in the cooling
system, lubricates the water pump and
prevents freezing. Be sure to replace or
replenish your coolant in accordance
with the maintenance schedule in
chapter 8. Before winter, have your
coolant tested to assure that its freezing
point is sufficient for the temperatures
anticipated during the winter.
Check battery and cables
Winter puts additional burdens on the
battery system. Visually inspect the
battery and cables as described in
chapter 8. The level of charge in your
battery can be checked by an authorized
HYUNDAI dealer or a service station.
Change to “winter weight” oil if
necessary
In some climates it is recommended that
a lower viscosity “winter weight” oil be
used during cold weather. See chapter
2 for recommendations. If you aren’t
sure what weight oil you should use, we
recommend that you consult with an
authorized HYUNDAI dealer.
Check spark plugs and ignition
system
Inspect your spark plugs as described
in chapter 8 and replace them if
necessary. Also check all ignition wiring
and components to be sure they are not
cracked, worn or damaged in any way.
To keep locks from freezing
To keep the locks from freezing, squirt
an approved de-icer fluid or glycerine
into the key opening. If a lock is covered
with ice, squirt it with an approved
de-icing fluid to remove the ice. If the
lock is frozen internally, you may be able
to thaw it out by using a heated key.
Handle the heated key with care to avoid
injury.
Use approved window washer anti-
freeze in system
To keep the water in the window washer
system from freezing, add an approved
window washer anti-freeze solution in
accordance with instructions on the
container. Window washer anti-freeze is
available from an authorized HYUNDAI
dealer and most auto parts outlets. Do
not use engine coolant or other types
of anti-freeze as these may damage the
paint finish.