2020 HYUNDAI SONATA HYBRID ECU

03
3-33
WARNING
Do not attempt to install a child
restraint system using LATCH anchors in
the rear center seating position. There
are no LATCH anchors provided for this
seat. Using the outboard seat anchors
can damage the anchors which may
break or fail in a collision resulting in
serious injury or death.
ODN8039031L[A]: ISOFIX Anchorage Position Indicator,
[B]: ISOFIX Anchorage
The lower anchor position indicator
symbols are located on the left and right
rear seat backs to identify the position
of the lower anchors in your vehicle (see
arrows in illustration).
The LATCH anchors are located between
the seatback and the seat cushion of the
rear seat left and right outboard seating
positions.
Securing a child restraint with the
LATCH anchors system
To install a LATCH-compatible child
restraint in either of the rear outboard
seating positions:
1. Move the seat belt buckle away from
the lower anchors.
2. Move any other objects away from
the anchors that could prevent a
secure connection between the child
restraint and the lower anchors.
3. Place the child restraint on the vehicle
seat, then attach the seat to the lower
anchors according to the instructions
provided by the child restraint
manufacturer.
4. Follow the child restraint instructions
for properly adjusting and tightening
the lower attachments on the child
restraint to the lower anchors.
WARNING
Take the following precautions when
using the LATCH system:
• Read and follow all installation
instructions provided with your child
restraint system.
• To prevent the child from reaching
and taking hold of unretracted
seat belts, buckle all unused rear
seat belts and retract the seat belt
webbing behind the child. Children
can be strangled if a shoulder belt
becomes wrapped around their neck
and the seat belt tightens.
• NEVER attach more than one
child restraint to a single anchor.
This could cause the anchor or
attachment to come loose or break.
• Always have the LATCH system
inspected by your authorized
HYUNDAI dealer after an accident.
An accident can damage the LATCH
system and may not properly secure
the child restraint.

Safety System
3-34
NOTICE
The recommended weight for the
LATCH system is under 65 lb (30 kg).
How to determine an appropriate child
restraint weight:
Child weight + Child restraint weight <
65 lb (30kg)
Securing a child restraint seat with
“Tether Anchor” system
ODN8A039029
First secure the child restraint with
the LATCH lower anchors or the seat
belt. If the child restraint manufacturer
recommends that the top tether strap
be attached, attach and tighten the
top tether strap to the top tether strap
anchor.
Child restraint hook holders are located
on the rear of the seatbacks.
WARNING
Take the following precautions when
installing the tether strap:
• Read and follow all installation
instructions provided with your child
restraint system.
• NEVER attach more than one child
restraint to a single tether anchor.
This could cause the anchor or
attachment to come loose or break.
• Do not attach the tether strap to
anything other than the correct
tether anchor. It may not work
properly if attached to something
else.
• Do not use the tether anchors for
adult seat belts or harnesses, or for
attaching other items or equipment
to the vehicle.
ODN8039030
To install the tether anchor:
1. Route the child restraint tether strap
over the child restraint seatback.
Route the tether strap under the
head restraint and between the head
restraint posts, or route the tether
strap over the top of the vehicle
seatback. Make sure the strap is not
twisted.
2. Connect the tether strap hook to the
tether anchor, then tighten the tether
strap according to the child seat
manufacturer’s instructions to firmly
secure the child restraint to the seat.

03
3-35
3. Check that the child restraint is
securely attached to the seat by
pushing and pulling the seat forward-
and-back and side-to-side.
Securing a child restraint with lap/
shoulder belt
When not using the LATCH system, all
child restraints must be secured to a
vehicle rear seat with the lap part of a
lap/shoulder belt.
WARNING
ALWAYS place a rear-facing child
restraint in the rear seat of the vehicle.
Placing a rear-facing child restraint in
the front seat can result in serious injury
or death if the child restraint is struck
by an inflating air bag.
OHI038145
Automatic locking mode
Since all passenger seat belts move
freely under normal conditions and
only lock under extreme or emergency
conditions (emergency locking mode),
you must manually pull the seat belt all
the way out to shift the retractor to the
“Automatic Locking” mode to secure a
child restraint.
The “Automatic Locking” mode will
help prevent the normal movement of
the child in the vehicle from causing
the seat belt to loosen and compromise
the child restraint system. To secure a
child restraint system, use the following
procedure.To install a child restraint system on the
rear seats, do the following:
1. Place the child restraint system on a
rear seat and route the lap/ shoulder
belt around or through the child
restraint, following the restraint
manufacturer’s instructions. Be sure
the seat belt webbing is not twisted.
Information
When using the rear center seat belt, you
should also refer to the “Rear Seat Belt –
Passenger’s 3-point system” section in this
chapter.
OHI038146
2. Fasten the lap/shoulder belt latch
into the buckle. Listen for the distinct
“click” sound.

Safety System
3-42
WARNING
To reduce the risk of serious injury or
death from an inflating curtain air bag,
take the following precautions:
• All seat occupants must wear
seat belts at all times to help keep
occupants positioned properly.
• Properly secure child restraints as far
away from the door as possible.
• Do not place any objects over the air
bag. Also, do not attach any objects
around the area the air bag inflates
such as the door, side door glass,
front and rear pillar, roof side rail.
• Do not hang other objects except
clothes, especially hard or breakable
objects. In an accident, it may cause
vehicle damage or personal injury.
• Do not allow passengers to lean their
heads or bodies onto doors, put their
arms on the doors, stretch their arms
out of the window, or place objects
between the doors and seats.
• Do not open or repair the side curtain
air bags.
How Does the Air Bag System
Operate?
ODN8039033
The SRS consists of the following
components:
1. Driver’s front air bag module
2. Passenger’s front air bag module
3. Side air bag modules (front)
4. Curtain air bag modules
5. Retractor pre-tensioner assemblies
6. Air bag warning light
7. SRS control module (SRSCM) /
Rollover sensor
8. Front impact sensors
9. Side impact sensors (acceleration)
10. Side impact sensors (pressure)
11. Driver’s knee air bag module
12. Occupant classification system
13. Side air bag modules (rear)
The SRSCM (Supplemental Restraint
System Control Module) continually
monitors all SRS components while the
Engine Start/Stop button is in the ON or
START position to determine if a crash
impact is severe enough to require air
bag deployment or pre-tensioner seat
belt deployment.

Instrument Cluster
4-20
Press START button with key
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.
Check BRAKE SWITCH fuse
This warning 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.
Press START button while turning
wheel
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
This message is displayed if the steering
wheel does not lock normally while the
Engine Start/Stop button is pressed to
the OFF position.
Door, Hood, Trunk Open Indicator
ODN8049012
This warning is displayed if any door or
the hood or the liftgate is left open. The
warning will indicate which door is open
in the display.
CAUTION
Before driving the vehicle, you should
confirm that the door/hood/liftgate
is fully closed. Also, check there is no
door/hood/liftgate open warning light
or message displayed on the instrument
cluster.
Sunroof Open (if equipped)
ODN8049013
This warning is displayed if you turn off
the engine when the sunroof is open.
Close the sunroof securely before leaving
your vehicle.

Convenient Features
5-16
ODN8059237[1] : Door handle authentication pad
NFC door lock/unlock
You should contact your smartphone’s
NFC antenna(backside of phone) to door
handle authentication pad (1) marked
position near by the lock button) of
driver’s (or front passenger’s) outside
door for 2 seconds to lock or unlock the
doors. If the Two Press Unlock feature
is applied (press twice for unlocking),
driver’s seat door will be unlocked by
contacting the digital key (smartphone
key). In this state, if you contact one
more time within 4 seconds, all the doors
unlock. Please make sure the doors are
locked. If you do not open any of the
doors after unlocking, it automatically
re-lock after 30 seconds.
Note that you cannot lock your vehicle
when you contact NFC antenna in the
smartphone to the door handle pad if
any of the following occurs:
• 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.
If the smartphone digital key does not
work, please detach the smartphone
more than 4 inches (0.1 m) from the door
handle authentication pad and retry to
contact. After unlock the door or start up the
vehicle with digital key, even though
the driver tries to lock the doors by the
central door lock switch, the door lock
will be once locked and immediately
released at the moment of door closed.
Start-up with Digital Key
1. After placing your registered
smartphone onto the interior
authentication pad (wireless charger),
step on the brake and press the
Engine Start/Stop button.
2. After start-up, the digital key data
will be automatically updated. It
takes 5 to 20 seconds, after that,
the smartphone can be go into the
wireless charging mode automatically.
Once the engine started, you can
remove the smartphone from the pad.
ODN8059267[A] : Wireless Charging Pad (In-vehicle Authentication Pad)
Information
After reconnecting the vehicle battery
power supply or charging the battery, it
may take time to operate due to remote
renewal of security information. When
you lock or unlock the door with NFC,
please contact and hold your smartphone
on the door handle until it works.

05
5-17
The solution allows for offline mode usage
when the mobile data connection of the
smartphone is weak. When you are in the
place where the mobile data connection
of your smartphone is available and
place your smartphone on the interior
authentication pad (wireless charger) and
start up your vehicle or contact the digital
key on the door handle to lock or unlock
the door, the remote renewal of security
information starts automatically. Even
though the engine is turned on, please
wait until the remote renewal process
is completed and wireless charger is
converted to charging mode.
CAUTION
The engine can be turned on if the
registered smartphone or card key is
placed on the interior authentication
pad (wireless charger). Do not leave
unsupervised children or people who
are not aware of the system since it
can result in serious injury or death.
Always keep the registered digital
key(smartphone or card key) with you to
prevent vehicle theft when leaving the
vehicle.
For more information, refer to the
Engine Start/Stop button in chapter 6.Remote Control with Digital Key
To use the remote control function with
your android smartphone, Bluetooth
must be turned on.
Remote Control Connection with Digital
Key
1. Open Hyundai digital key application
on the smartphone. Select the
vehicle to activate the remote control
function as a main vehicle.
2. Approach with the activated
smartphone app to your vehicle
and you can check whether the
connection is available. If it enables
your smartphone to connect, connect
with your vehicle by pressing the
connect button. The remote control
function is activated after completing
the process.
Remote Control Operation with Digital
Key
You can execute the remote control
operation including door lock/unlock,
panic on/off, remote start / remote
stop and trunk opening. The icon for
each function will be highlighted and
alarm/vibration also provided when the
operation is performed.
Note that you cannot lock your vehicle
using the Hyundai digital key app if any
of the following occurs:
• The POWER button is in ACC or ON
position.
• Any doors are open.
When the smartphone and the vehicle
are connected by the Bluetooth function
but the remote control command
cannot be received over 5 minutes, the
remote control connection is cancelled
automatically.

Convenient Features
5-18
CAUTION
• If metallic window tint was applied
to your vehicle, it may cause
bad Bluetooth connection or
performance degradation of the
digital key.
• If multiple users operate the remote
control function simultaneously, the
connection between the digital key
and the vehicle might result in failed
commands. Please connect and
operate the remote control function
only the necessary user.
• When using the remote control
operation, the driver (the remote
control user) should leave the vehicle
after confirming the door lock (the
chime sounds once and the hazard
warning lights blink).
• The remote functions of the Digital
Key app enables the vehicle to be
controlled from a set distance. If
the digital key or the vehicle goes
beyond the operable distance, the
remote control function might be
disconnected or cancelled.
• If the digital key (smartphone) is
connected with the vehicle for the
remote control, the driver with the
key goes far away from the vehicle,
the function might not work.
• If the remote control operation
is executed where the mobile
connection is weak, Bluetooth
connection is poor due to several
Bluetooth devices or there is an
object such as metal or concrete, it
might be delayed or the operable
distance might decrease. 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
available, please use NFC function to
lock or unlock the doors. Remote Start with Digital Key
•
When the shift button of your vehicle
is in P (Park) and all of the doors
including trunk and hood is locked
and the vehicle is off, press the Door
Lock button in the Hyundai Digital
Key app then press the Remote Start
button within 4 seconds.
You can confirm the engine is on if the
hazard warning lights blinks two times
and the chime sounds.
• If you want to turn off the engine,
press Remote Engine Stop. Air
Conditioner / Heating system
maintains the same status as when
you last used the vehicle.
• Unless you put the registered digital
key(smartphone) on the interior
authentication pad (wireless charger)
when the remote start function is on,
the engine will turn off.
• If you do not get on the vehicle within
10 minutes after the engine turns on,
the vehicle will turn off.
For more information, refer to the Engine
Start/Stop button in chapter 6.
Vehicle information Display
The digital key application displays
the vehicle information such as
driving or door conditions through the
communication with the vehicle.
• How to check : Select the vehicle
what you want to check and touch
the vehicle image, then vehicle
information display page will be
shown.
• Contents : accumulated odometer,
latest fuel economy, driving range,
fuel remaining, tire pressure, doors
lock/unlock status and last data
updated time.
ÃThe information displayed may differ
from the actual vehicle status.
ÃFor more information, please refer to
the ‘Tutorial’ on your Digital key app.