ECO mode HYUNDAI SONATA 2023 Owner's Manual

Convenience Features
5-4
Remote Key (if equipped)
OIG046001
Your HYUNDAI uses a remote key, which
you can use to lock or unlock the driver
and passenger doors or the rear trunk.
(1) Door Lock
(2) Door Unlock
(3) Trunk Unlock
(4) Panic
Locking your vehicle
To lock your vehicle:
1. Make sure all doors, the engine hood and the trunk are closed.
2. Press the Door Lock button (1) on the remote key to lock all doors.
3. If the Door Lock button (1) is pressed once more within four seconds, the
horn will beep once and the hazard
warning lights will blink.
4. Make sure the doors are locked by
checking the position of the door lock
button inside the vehicle.
WARNING
Do not leave the keys in your
vehicle with unsupervised children.
Unattended children could place the
key in the ignition switch and may
operate power windows or other
controls, or even make the vehicle
move, which could result in serious
injury or death.
Unlocking your vehicle
To unlock your vehicle:
1. Press the Door Unlock button (2) on the remote key.
2. The driver’s door will unlock. The hazard warning lights will blink two times.
• Two press unlock setting:
If you press the Door Unlock button
on the remote key again within
four seconds, then all the doors will unlock.
Two press unlock setting can be
changed according to owner’s
preference in the cluster User Settings
mode or with the remote key.
• User settings mode method:
Select or deselect the ‘Two Press
Unlock’ feature in the User Settings
mode on the cluster LCD display (User
Settings → Door → Two Press Unlock).
Information
After unlocking the doors, the doors will
automatically relock after 30 seconds
unless a door is opened.
Accessing Your Vehicle

05
5-5
Trunk unlocking
To unlock the trunk :
1. Press and hold the Trunk Unlock button (3) on the remote key for more than one second.
2. The hazard warning lights will blink two times and the trunk will be
unlocked.
3. Once the trunk is opened and then closed, the trunk will automatically
re-lock after 30 seconds.
Information
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 button (4)
Press and hold the Panic button (4) for
more than one second. The horn sounds
and hazard warning lights flash for about 30 seconds.
To cancel the panic mode, press any
button on the remote key.
Start-up
For information, refer to the “Key
Ignition Switch” section in chapter 6.
NOTICE
To prevent damaging the remote key: • Keep the remote key away from
water or any liquid and fire. Internal
circuits may malfunction if the inside
of the remote key gets damp (from
liquids or moisture) or if it is heated.
This can exclude the remote key from
being covered under warranty.
• Avoid dropping or throwing the
remote key.
• Protect the remote key from extreme
temperatures. Mechanical key
OIG046004
If the remote key does not operate
normally, you can lock or unlock the
driver’s door by using the mechanical
key.
To unfold the mechanical key, press the
release button on the remote.
To return the key to its stored position,
press the release button and fold the key
back into the remote.
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 m [90 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.
If 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 contact an
authorized HYUNDAI dealer.

05
5-9
Unlocking your vehicle
(When the Two Press Unlock feature
is off)
ODN8059001
„
„Button type
1. Make sure you have the smart key in your possession.
2. Press the Door Unlock button (2) on the smart key, press the button on the
front door handle unlock the doors.
3. All of the doors will unlock. When the doors unlock, the hazard warning
lights will blink two times and the chime will sound.
• The door handle button will only
operate when the smart key is within
0.7~1 m (28~40 inches) from the outside door handle.
• If you do not open the door after unlocking within 30 seconds, it will
return to the lock mode.
• If you unlocked the door with the door
handle, the doors cannot be locked with the sensor within 2 seconds. Unlocking your vehicle
(When the Two Press Unlock feature
is on)
1. Make sure you have the smart key in
your possession.
2. Press the Door Unlock button (2) on the smart key, press the button on the
front door handle or touch the door
unlock sensor inside of the front door
handle to unlock the doors.
3. The driver’s door will unlock.
4. If you press the button on the front
door handle or touch the door unlock
sensor inside of the front door handle
to unlock the doors within 4 seconds,
all of the doors unlock. When the
doors unlock, the hazard warning
lights will blink two times and the chime will sound.
• The door handle button will only
operate when the smart key is within
0.7~1 m (28~40 inches) from the outside door handle.
• If you do not open the door after unlocking within 30 seconds, it will
return to the lock mode.
• The factory default setting is in off
mode so you should set in the User’s
Settings mode.
• If you unlocked the door with the door
handle, the doors cannot be unlocked with the sensor within 2 seconds.

Convenience Features
5-10
Two Press Unlock Feature
The priority for unlocking the driver door
only, or unlocking all the doors with
one press may be adjusted in the User
Settings mode in the cluster LCD display.
The Two Press Unlock feature, when
enabled, will require the user to press
the door unlock button once for driver
door only and twice for unlocking all the
doors.
Select or Deselect the Two Press Unlock
feature in the User Settings mode in the
cluster LCD display. The option can be
found under the following menu:
User Settings → Door → Two Press Unlock
The Two Press Unlock feature can also be
enabled or disabled by pressing the door
lock and unlock buttons simultaneously
on the Key FOB:
Press and hold both the Door Lock
button and the Door Unlock button
simultaneously until the hazard warning
lights blink.
This will enable or disable the Two Press
Unlock feature. Repeat this procedure to enable/disable the mode again.
Information
If you press the front passenger outside
door handle with the smart key in your possession, all the doors will unlock. Smart Key Reminder
If the smart key is in the vehicle and
any door is opened, the doors will not
lock even though the lock button of the
central door lock switch is pressed.
Trunk opening
To open:
1. Make sure you have the smart key
in your possession and either press
inside the trunk emblem or press the
Trunk Unlock button (3) on the smart
key for more than one second.
2. Once the trunk is opened, the hazard warning lights will blink two times.
• The trunk handle button will only
operate when the smart key is within
0.7~1 m (28~40 inches) from the outside door handle.
• Once the trunk is opened and then
closed, the trunk will automatically
re-lock and the hazard warning will blink once.
• If you leave the smart key and close
the trunk, the chime will sound for 5
seconds. In the case, the trunk cannot
be locked so open it with the trunk
handle button.
Panic button
Press and hold the Panic button (4) for
more than one second. The horn sounds
and hazard warning lights blink for about
30 seconds. To cancel the panic mode,
press any button on the Smart Key.

05
5-15
Information
This device complies with Industry Canada RSS-210 standard.
Operation is subject to the following three conditions: 1. This device may not cause harmful
interference.
2. This device must accept any
interference received, including
interference that may cause undesired operation.
3. Changes or modifications not expressly
approved by the party responsible
for compliance could void the user’s authority to operate the device.
“Limp Home” Mode and Related
Procedures
If the immobilizer warning indicator
blinks for five seconds when the ignition
key is turned to the “ON” position,
this indicates the immobilizer system
requires service. The engine cannot be
started without using the procedure
below.
The following procedure describes
how to start the engine using the limp
home function (0, 1, 2, 3 as a sample
password).
NOTICE
You can get a limp home password
when the vehicle is first delivered to
you. If you do not have a password,
consult your authorized HYUNDAI
dealer.
1. To activate the password, turn the ignition key “ON” and “OFF“
according to the digit numbers. The
immobilizer indicator will blink along
with the operation of the ignition
key. For example, turn the ignition
key once for digit number “1”, and
twice for “2”, and so on. For the digit
number “0”, you must cycle the
ignition key 10 times.
2. Wait for 3~10 seconds.
3. You may set the remaining number of digits by following steps 1 and 2.
4. If all of the four password digits have
been successfully entered, turn the
ignition key “ON” and check that the
immobilizer indicator illuminates.
From this time, you have to start your
engine within 30 seconds. If you try
to start your engine after 30 seconds,
your engine will not start.
NOTICE
If the engine stalls while driving in the
“limp home” mode, you can start your
engine within 3 seconds without re-
entering the password.
If the immobilizer indicator blinks for
five seconds, you must re-enter the
password (steps 1~4).
After performing the limp home
activation procedure, consult with your
authorized HYUNDAI dealer as soon as possible.
CAUTION
• If the password is entered incorrectly
three consecutive times, wait for
about one hour to perform the limp
home activation procedure again.
• If you cannot start your engine using
the limp home activation procedure,
have your vehicle towed by an
authorized HYUNDAI dealer.

Convenience Features
5-16
Door locks
Operating Door Locks from
Outside the Vehicle
Mechanical key
ODN8059011
If you lock the driver’s door with a
mechanical key, all vehicle doors will
lock. If you unlock the driver’s door with
a mechanical key, you can open and
close the driver’s door only.
Once the doors are unlocked, they may
be opened by pulling the door handle.
When closing the door, push the door by
hand. Make sure that doors are closed
securely.
Remote key
ODN8059279L
To lock the doors, press the Door Lock
button (1) on the remote key.
Press the Door Unlock button (2) on the
remote key, the driver’s door will unlock.
If you press the Door Unlock button
on the remote key again within four
seconds, then all the doors will unlock.
Once the doors are unlocked, they may
be opened by pulling the door handle. When closing the door, push the door by
hand. Make sure that doors are closed
securely.
Smart key
ODN8059001
Press the button on the driver’s outside
door handle while carrying the Smart Key
with you or press the Door Unlock button
on the Smart Key, the driver’s door will unlock.
If you press the button on the front
passenger’s outside door, all doors will unlock.
Once the doors are unlocked, they may
be opened by pulling the door handle.
When closing the door, push the door by
hand. Make sure that doors are closed
securely.
Information
• In cold and wet climates, door lock
and door mechanisms may not work
properly due to freezing conditions.
• If the door is locked/unlocked multiple
times in rapid succession with either
the vehicle key or door lock switch, the system may stop operating temporarily
in order to protect the circuit and
prevent damage to system components.
• Two press unlock setting can be
changed in the User Settings mode on
the cluster.

05
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Automatic-Dimming Night Vision Safety™ (NVS®
) Mirror (if equipped)
The NVS® Mirror automatically reduces
glare by monitoring light levels in the
front and the rear of the vehicle. Any
object that obstructs either light sensor
will degrade the automatic dimming
control feature.
For more information regarding NVS®
mirrors and other applications, please
refer to the Gentex website:
www.gentex.com
Your mirror will automatically dim
upon detecting glare from the vehicles
traveling behind you.
The mirror defaults to the ON position
each time the vehicle is started. Integrated HomeLink ®
Wireless Control
System
The HomeLink® Wireless Control System
can replace up to three hand-held
radio-frequency (RF) transmitters with
a single built-in device. This innovative
feature will learn the radio frequency
codes of most current transmitters to
operate devices such as gate operators,
garage door openers, entry door locks,
security systems, even home lighting.
Both standard and rolling code-equipped
transmitters can be programmed by
following the outlined procedures.
Additional HomeLink® information can
be found at: www.homelink.com, www.
youtube.com/HomeLinkGentex or by
calling 1-800-355-3515.
Retain the original transmitter of the
RF device you are programming for use
in other vehicles as well as for future
HomeLink® programming. It is also
suggested that upon the sale of the
vehicle, the programmed HomeLink®
buttons be erased for security purposes.
WARNING
Before programming HomeLink® to a
garage door opener or gate operator,
make sure people and objects are out
of the way of the device to prevent
potential harm or damage. Do not
use the HomeLink® with any garage
door opener that lacks the safety
stop and reverse features required by
federal safety standards (this includes
any garage door opener model
manufactured before April 1, 1982).
A garage door that cannot detect an
object - signaling the door to stop
and reverse does not meet current
federal safety standards.Using a garage
door opener without these features
increases the risk of serious injury or
death.
Programming HomeLink ®
Please note the following:
• When programming a garage door opener, it is advised to park the
vehicle outside of the garage.
• It is recommended that a new battery be placed in the hand-held transmitter
of the device being programmed to
HomeLink® for quicker training and
accurate transmission of the radio-
frequency signal.
• Some vehicles may require the Engine Start/Stop button to be in the
ACC (or “Accessories”) position for
programming and/or operation of
HomeLink®.
• In the event that there are still programming difficulties or questions
after following the programming steps
listed below, contact HomeLink® at:
www.homelink.com, www.youtube.
com/HomeLinkGentex or by calling
1-800-355-3515.

05
5-35
7. Return to the vehicle and firmly press,
hold for two seconds and release the
HomeLink button up to three times.
Do not press the HomeLink button
rapidly. At this point programming
is complete and your device should
operate when the HomeLink button is
pressed and released.
Information
• Some garage door openers require to
press the programmed button on the
mirror up to three times right after
the programming is just completed to
operate the garage door.
• The indicator (4) is turned ON in
Orange and flashes for about 60
seconds, during the programing mode
and if a programing is not succeeded
within the 60 seconds, the programing mode will be abort.
HomeLink® should now activate your
rolling code equipped device. Gate operator & Canadian programming
During programming, your handheld
transmitter may automatically stop
transmitting. Continue to press the
Integrated HomeLink® Wireless Control
System button while you press and re-
press (“cycle”) your handheld transmitter
every two seconds until the frequency
signal has been learned. The indicator
light will flash slowly and then rapidly
after several seconds upon successful
training.
ODN8A059136
Operating HomeLink®
1. Press and release one of the HomeLink buttons (1, 2 or 3) that
programed.
2. The HomeLink indicator (4) will operate as below:
- Indicates Green and is continuously ON (Fixed Code Garage Door
Opener)
- Flashes in Green rapidly (Rolling Code Garage Door Opener)

05
5-53
Inside the vehicle
When you can not unlock the trunk due
to battery discharge or other reasons,
you can unlock the trunk inside the
vehicle.
ODN8059045L
Open the cable cover(1) under the rear
seat with a mechanical key and pull the
cable (2) for unlocking the trunk.
The cable is firmly fixed so it may hard to
pull. Therefore, please use a tool such as
a screwdriver to assist in pulling the loop
for the emergency release.
Smart Trunk with Auto Open (if equipped)
ODN8059046L
On a vehicle equipped with a smart key, the trunk can be opened using the Smart
Trunk with Auto Open system. How to use the Smart Trunk with
Auto Open
The trunk can be opened with no-touch
activation satisfying all the conditions
below.
• After 15 seconds when all doors are
closed and locked
• Positioned in the detecting area for more than 3 seconds.
Information
• The Smart Trunk with Auto Open does not operate when:
- The smart key is detected within 15 seconds after the doors are closed and locked, and is continuously detected.
- The smart key is detected within 15 seconds after the doors are closed and locked, and within 1.5m (60inches)
from the front door handles. (for
vehicles equipped with Welcome Light)
- A door is not locked or closed.
- The smart key is in the vehicle.
1. Setting
To activate the Smart Trunk with Auto
Open, go to User Settings Mode and
select Smart Trunk on the LCD display.
For more information, refer to the “LCD
Display” section in this chapter. If your
vehicle is equipped with additional
navigation, please refer to the
infotainment system manual separately supplied.

Convenience Features
5-66
Turn signals and lane change signals
ODN8A059207
To signal a turn, push down on the lever
for a left turn or up for a right turn in
position (A).
If an indicator stays on and does not flash
or if it flashes abnormally, one of the turn
signal bulbs may be burned out and will
require replacement.
One touch turn signal function
To activate the One Touch Turn Signal
function, push the turn signal lever up or
down to position (B) and then release it. The lane change signals will blink 3, 5 or 7 times.
You can activate or deactivate the One
Touch Turn Signal function or choose
the number of blinks (3, 5, or 7) from the
User Settings mode in the LCD display. Battery saver function
The purpose of this feature is to prevent
the battery from being discharged.
The system automatically turns off the
parking lamp when the driver turns the
vehicle off and opens the driver-side
door.
With this feature, the parking lamps will
turn off automatically if the driver parks
on the side of road at night.
However, the position lamps stay ON
even when the driver-side door is opened
if the headlamp switch is turned to the
position lamp or AUTO (if equipped)
position after the engine is turned off.
If necessary, to keep the lamps on turn the position lamps OFF and ON
again using the headlamp switch on
the steering column after the engine is
turned off.
Headlamp delay function (if equipped)
If the key is removed from the ignition
switch or placed in the ACC position
or the LOCK/OFF position with the
headlamps ON, the headlamps (and/
or parking lamps) remain on for about
5 minutes. However, if the driver’s door is opened and closed, the headlamps
are turned off after 15 seconds. Also,
with the engine off if the driver’s door is
opened and closed, the headlamps (and/
or parking lamps) are turned off after 15 seconds.
The headlamps (and/or parking lamps)
can be turned off by pressing the lock
button on the remote key or smart key
twice or turning the headlamp switch to
the OFF or AUTO position.
You can activate or deactivate the
Headlamp Delay function from the User
Settings Mode in the LCD display.