2020 HYUNDAI SONATA HYBRID ECU

Convenient Features
5-20
• If the remote control operation
is executed where the mobile
connection is weak, Bluetooth
connection is poor due to lots of
Bluetooth devices or there is an
object such as metal or concrete, it
might be delayed or the operable
distance might decrease. Especially,
you should not cover the smartphone
with your hand or place other
devices which can cause frequency
interference. It may result in poor
performance.
• If the remote control function is not
activated, please use NFC function to
lock or unlock the doors
• You should be careful not to
press the remote control button
on the digital key (smartphone)
accidentally.
• If the digital key (smartphone) is
discharged or defective or you
cannot use the digital key since the
vehicle battery is discharged, use the
inside door lock button to lock all of
the doors.
• Digital Key smartphone app may
not work properly in following
conditions.
-If you are running an important
feature of your smartphone.
(Phone call, emergency call, audio
function, NFC payment, etc.)
-When connecting and using
wireless earphones. (Phone call,
emergency call, audio function)
-When the function of the digital
key app is restricted by the
smartphone manufacturer’s
setting value or application
execution priority policy.
CAUTION
• Hyundai digital key app on the
smartphone and card key may not
work if any of the following occurs:
-Hyundai digital key app on the
smartphone is deleted. (Required
to reinstall the app)
-Account log in information of
Hyundai digital key app is expired.
(Required to re-log in)
-When you try to log in to another
smartphone instead of the
registered smartphone with same
user account.
-Smartphone rooting or app
hacking is detected.
-Smartphone battery or the vehicle
battery is discharged.
-Smartphone’s screen is off or locked.
-NFC or Bluetooth is turned off on
the smartphone settings.
-Smartphone’s mobile network
setting is off or airplane mode is
activated.
-A credit card is overlapped in the
back of your smartphone or metal
or thick case is used.
-Use the card key with insert it
into the wallet or card holder or
overlapping with other cards.
-If you use a smart phone cover that
uses wireless communication or is
made of metal, the digital key NFC
function may not work properly.
Remove the smart phone cover
before using the digital key NFC
function.
à If you change the smartphone
number, you should modify the user
account information on the HYUNDAI
customer web site to use the digital
key app.
ÃIf the vehicle owner changes
the smartphone device, the new
smartphone should be registered in
the car after deleting the registered
digital key(smartphone).

Convenient Features
5-28
DOOR LOCKS
Operating Door Locks from
Outside the Vehicle
Mechanical key
ODN8059011
If you lock or 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.
Smart key
ODN8059001Press the button on the driver’s outside
door handle or touch the touch sensor
on the door handle (the engraved part)
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
5-29
In case of an emergency
ODN8059291
If the electrical power door lock switch
is not operating (ex. dead car battery)
the only way to lock the door(s) is with
the mechanical key from the outside key
hole.
Doors without an outside key hole can be
locked as follows:
1. Open the door.
2. Insert the key into the emergency door lock hole and turn the key
horizontally to lock.
3. Close the door securely.
Information
If the electrical power to door lock switch
is not operating (ex. dead car battery) and
the trunk is closed, you will not be able to
open the trunk until power is restored.
Operating Door Locks from
Inside the Vehicle
With the door handle
ODN8059012
Front door
If the inner door handle is pulled when
the door is locked, the door will unlock
and open.
Rear door
If the inner door handle is pulled once
when the door is locked, the door will
unlock. If the inner door handle is pulled
once more, the door will open.
Information
If a power door lock ever fails to function
while you are in the vehicle try one or
more of the following techniques to exit:
• Operate the door unlock feature
repeatedly (both electronic and
manual) while simultaneously pulling
on the door handle.
• Operate the other door locks and
handles, front and rear.
• Lower a front window and use the
mechanical key to unlock the door from
outside.

Convenient Features
5-30
With the central door lock switch
„„Driver’s door
ODN8A059013
„„Front passenger’s door
ODN8059014
• When pressing the () portion (1) of
the switch, all vehicle doors will lock.
- If the key is in the ignition switch
and any door is opened, the doors
will not lock even though the lock
button (1) of the central door lock
switch is pressed.
-If the smart key is in the vehicle
and any door is opened, the doors
will not lock even though the lock
button (1) of the central door lock
switch is pressed.
• When pressing the (
) portion (2)
of the switch, all vehicle doors will
unlock.
• Doors indicating light (3)
When all vehicle doors are locked, the
indicating lights on the driver’s door
and passenger’s door will turn on. If
any door is unlocked, it would go off.
WARNING
• The doors should always be fully
closed and locked while the
vehicle is in motion. If the doors
are unlocked, the risk of being
thrown from the vehicle in a crash is
increased.
• Do not pull the inner door handle of
the driver’s or passenger’s door while
the vehicle is moving.
WARNING
Do not leave children or animals
unattended in your vehicle. An enclosed
vehicle can become extremely hot,
causing death or serious injury to
unattended children or animals who
cannot escape the vehicle.
Children might operate features of the
vehicle that could injure them, or they
could encounter other harm, possibly
from someone gaining entry to the
vehicle.
WARNING
Always secure your vehicle.
Leaving your vehicle unlocked increases
the potential risk to you or others from
someone hiding in your vehicle.
To secure your vehicle, while depressing
the brake, move the shift button to the
P (Park) position, engage the parking
brake, and place the ignition switch
in the LOCK/OFF position, close all
windows, lock all doors, and always
take the key with you.

Convenient Features
5-34
THEFT-ALARM SYSTEM
This system helps to protect your vehicle
and valuables. The horn will sound and
the hazard warning lights will blink
continuously if any of the following
occur:
-A door is opened without using the
remote key or smart key.
-The trunk is opened without using the
remote key or smart key.
-The engine hood is opened.
The alarm continues for 30 seconds, then
the system resets. To turn off the alarm,
unlock the doors with the remote key or
smart key.
The Theft Alarm System automatically
sets 30 seconds after you lock the doors
and the trunk. For the system to activate,
you must lock the doors and the trunk
from outside the vehicle with the remote
key or smart key or by pressing the
button on the outside of the door handle
with the smart key in your possession.
The hazard warning lights will blink and
the chime will sound once to indicate the
system is armed.
Once the security system is set, opening
any door, the trunk, or the hood without
using the remote key or smart key will
cause the alarm to activate.
The Theft Alarm System will not set if the
hood, the trunk, or any door is not fully
closed. If the system will not set, check
the hood, the trunk, or the doors are fully
closed.
Do not attempt to alter this system or
add other devices to it.
Information
• Do not lock the doors until all
passengers have left the vehicle. If the
remaining passenger leaves the vehicle
when the system is armed, the alarm
will be activated.
• If the vehicle is not disarmed with the
remote key or smart key, open the
doors by using the mechanical key
and place the ignition switch in the
ON position (for remote key) or start
the engine (for smart key) by directly
pressing the ignition switch with the
smart key.
• If the system is disarmed by unlocking
the vehicle, but neither a door or the
trunk is opened within 30 seconds, the
doors will relock and the system will
rearm automatically.

05
5-43
Electrochromic mirror (ECM) with
HomeLink® system (if equipped)
ODN8A059135
Your vehicle may be equipped with
a Gentex Automatic-Dimming Mirror
with an Integrated HomeLink® Wireless
Control System.
During nighttime driving, this feature
will automatically detect and reduce
rearview mirror glare. The HomeLink®
Universal Transceiver allows you to
activate your garage door(s), electric
gate, home lighting, etc.
(1) HomeLink Channel 1
(2) HomeLink Channel 2
(3) HomeLink Channel 3
(4) Garage Door Opener Status Indicator : Closing or Closed
(5) HomeLink Operation Indicator
(6) Garage Door Opener Status Indicator : Opening or Opened
(7) HomeLink User Interface Indicator
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.

05
5-45
ODN8H050137N
4. Press the Original Transmitter
button until the indicator (7) is
turned continuously ON or flashes in
Green for approximately 10 seconds
and it indicates the programing is
completed.
5. However, the indicator (7) flashes
in Green continuously, but if the
garage door opener does not operate,
please continue to follow the step 6
and 7 (“Rolling Code Programming”
procedures).
6. Firmly press and release the “Learn,”
“Smart,” or “Program” button while
the indicator (7) flashes in Green.
Once the button is pressed, you have
approximately 30 seconds to initiate
the next step.
Information
At the garage door opener motor, (security
gate motor, etc.) locate the “Learn,”
“Smart,” or “Program” button. This
can usually be found where the hanging
antenna wire is attached to the motor-head
unit (see the device’s manual to identify
this button). The name and color of the
button may vary by manufacturer. A
ladder and/or second person may simplify
the following steps.
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 (7) 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.

Convenient Features
5-58
Resetting the Sunroof
ODN8A059039
The sunroof may need to be reset if the
following conditions occur:
• The battery is discharged or
disconnected or the sunroof fuse has
been replaced or disconnected
• The sunroof control lever is not
operating correctly
To reset the sunroof, perform the
following steps:
1. Turn the engine on and close
the sunroof glass and sunshade
completely.
2. Release the control lever.
3. Push and hold the sunroof control
lever (1) forward (to close the
sunshade) for about 10 seconds until
the sunroof moves slightly, then
release the control lever.
4. Push and hold the sunroof control
lever forward until the sunroof
operates as follows:
TILT DOWN → SLIDE OPEN → SLIDE CLOSE
Then, release the control lever.
When this is complete, the sunroof
system is reset.
For more information, contact an
authorized HYUNDAI dealer.
Information
If you do not reset the sunroof, it may not
work properly.
Sunroof Open Warning
(if equipped)
• If the driver turns off the engine
when the sunroof is not fully closed,
the warning chime will sound for
approximately 3 seconds and the
sunroof open warning will appear on
the cluster LCD display.
• If the driver turns off the engine and
opens the door when the sunroof is
not fully closed, the sunroof open
warning will appear on the cluster
LCD display until the door is closed or
the sunroof is fully closed.
Close the sunroof securely when leaving
your vehicle.