2023 HYUNDAI SONATA check engine

05
5-21
Rear Occupant Alert (ROA)
System
The Rear Occupant Alert (ROA) system
is provided to help prevent exiting the
vehicle with the rear passenger left in the
vehicle. When you open the front door
after opening and closing the rear door
and turning off the engine, the “Check
rear seats” warning message appears on
the cluster.
„„Cluster
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„„Steering wheel
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CAUTION
• The system does not actually detect
objects or people in the rear seat. By
using a rear door opened and closed
history, the system indicates that
there may be something in the rear
seat.
• The rear door opened and closed
history can be initialized only when
you turn off the engine normally, get
off the vehicle and lock the door with
the remote control key. Therefore,
there could be alarms even though
the back doors are locked.
ex) When you get in and drive your vehicle without locking the doors
after the alarm sounds, there could
be the alarm sounds if you turn off
the engine and open the driver’s seat
door.
WARNING
It does not use the actual sensors but it
provides the alarm sounds by checking
the rear door lock/unlock status as a
reminder.

05
5-23
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.
ThefT-AlArm SySTem

Convenience Features
5-50
Hood
Opening the hood
ODN8A059040
1. Park the vehicle and set the parking brake.
2. Pull the release lever to unlatch the hood. The hood should pop open
slightly.
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3. Go to the front of the vehicle, raise the hood slightly, push up the secondary
latch (1) inside of the hood center
and lift the hood (2). After it has been
raised about halfway, it will raise
completely by itself. Closing the hood
1. Before closing the hood, check in and
around the engine compartment to
ensure the following:
- Any tools or other loose objects are removed from the engine room area
or hood opening area
- All glove, rags, or other combustible material is removed from the engine
compartment
- All filler caps are tightly and correctly installed
2. Lower the hood halfway (lifted approximately 30 cm (12 inches) from
the closed position) and push down
to securely lock in place. Then double
check to be sure the hood is secure.
If the hood can be raised slightly, it is
not securely locked. Open it again and
close it with more force.
WARNING
• Before closing the hood, ensure
all obstructions are removed from
around the hood opening.
• Always double check to be sure that
the hood is firmly latched before
driving away. Check there is no
hood open warning light or message
displayed on the instrument cluster.
Driving with the hood opened may
cause a total loss of visibility, which
might result in an accident.
• Do not move the vehicle with the
hood in the raised position, as vision
is obstructed, which might result in
an accident, and the hood could fall or be damaged.
exterior FeAtures

Convenience Features
5-72
Information
If the wiper switch is set in AUTO mode when Engine Start/Stop button is in the
ON position, the wiper will operate once to perform a self-check of the system. Set the
wiper to the OFF position when the wiper is not in use.
WARNING
To avoid personal injury from the
windshield wipers, when the engine is running and the windshield wiper
switch is placed in the AUTO mode:
• Do not touch the upper end of the windshield glass facing the rain
sensor.
• Do not wipe the upper end of the windshield glass with a damp or wet
cloth.
• Do not put pressure on the windshield glass.

Windshield Washers
ODN8059209K
In the OFF position, pull the lever gently
toward you to spray washer fluid on the
windshield and to run the wipers 1-3
cycles. The spray and wiper operation
will continue until you release the lever. If
the washer does not work, you may need
to add washer fluid to the washer fluid
reservoir.
WARNING
When the outside temperature is below
freezing, ALWAYS warm the windshield
using the defroster to help prevent
the washer fluid from freezing on the
windshield and obscuring your vision
which could result in an accident and
serious injury or death.
NOTICE
• To prevent possible damage to the
washer pump, do not operate the
washer when the fluid reservoir is
empty.
• To prevent possible damage to the
wipers or windshield, do not operate
the wipers when the windshield is
dry.
• To prevent damage to the wiper
arms and other components, do
not attempt to move the wipers
manually.
• To prevent possible damage to the
wipers and washer system, use anti-
freezing washer fluids in the winter
season or cold weather.

05
5-75
SUrroUnD view moniTor (Svm) (if eQUippeD)
ODN8059265
Surround View Monitor system can assist
in parking by allowing the driver to see
around the vehicle.
Operating Conditions • The engine is running.
• The Surround View Monitor button(1)
is pressed (indicator ON).
• The gear status is on D (Drive), N
(Neutral), R (Reverse). (On P (Park), it
doesn’t work.)
• Vehicle speed is under 15km/h (10
mph).
Deactivations • The Surround View Monitor button (1)
is pressed again (indicator OFF).
• Vehicle speed is over 15km/h (10
mph).
System operation • When vehicle speed is over 15 km/h
(10 mph), the system will turn off. The
system will not automatically turn on
again, even though vehicle speed gets
below 15 km/h (10 mph). Press the
button (1, indicator ON) again, to turn
on the system. •
When the vehicle is backing up,
the system will turn ON regardless
of vehicle speed or button status.
However, if vehicle speed is over 15
km/h (10 mph) when driving forward,
Surround View Monitor system will
turn off.
• An indicator on the screen appears when:
- The trunk is opened
- The driver/passenger’s door is opened
- The side view mirror is folded
• When you set up ‘Surround View
Monitor Auto On’ on the user setting
menu, you can choose the Surround
View Monitor system to turn on
automatically in case of the parking alarm sounds.
• If the system is not operating
normally, have the vehicle inspected
by an authorized HYUNDAI dealer.
CAUTION
• Surround View Monitor system is
a parking assist system. Because
the images of the four cameras on
the front, rear, left, and right are
synthesized, the SVM view and
parking guidelines may differ from
the actual vehicle location. So, check
all directions for safety.
• Always keep the rear view camera
lens clean. If the lens is covered with
foreign material, it may adversely
affect camera performance and
Surround View Monitor may not
operate normally. However, do not
use chemical solvents such as strong
detergents containing high alkaline
or volatile organic solvents (gasoline,
acetone etc.). This may damage the
camera lens.

05
5-135
Wireless Cellular Phone
Charging System (if equipped)
ODN8059223
[A]: Indicator light, [B]: Charging pad
On certain models, the vehicle comes
equipped with a wireless cellular phone
charger.
The system is available when all doors
are closed, and when the ignition switch is ON.
To charge a cellular phone
The wireless cellular phone charging
system charges only the Qi-enabled
cellular phones. Read the label on the
cellular phone accessory cover or visit
your cellular phone manufacturer’s
website to check whether your cellular
phone supports the Qi technology.
The wireless charging process starts
when you put a Qi-enabled cellular
phone on the wireless charging unit.
1. Remove other items, including the smart key, from the wireless charging
unit. If not, the wireless charging
process may be interrupted. Place
the cellular phone on the center of
the charging pad (
).
2. The indicator light is orange when the cellular phone is charging. The
indicator light turns green when
phone charging is complete.
3. You can turn ON or OFF the wireless charging function in the user settings
mode on the instrument cluster. For
further information, refer to the “LCD
Display Modes” in this chapter.
If your cellular phone is not charging:
- Slightly change the position of the cellular phone on the charging pad.
- Make sure the indicator light is orange.
The indicator light will blink orange for 10
seconds if there is a malfunction in the
wireless charging system.
In this case, temporarily stop the
charging process, and re-attempt to
charge your cellular phone again.
The system warns you with a message
on the LCD display if the cellular phone
is still on the wireless charging unit after
the engine is turned OFF and the front door is opened.
Information
For some manufacturers’ cellular phones, the system may not warn you even though
the cellular phone is left on the wireless
charging unit. This is due to the particular
characteristic of the cellular phone and
not a malfunction of the wireless charging.
NOTICE
• The wireless cellular phone charging system may not support certain
cellular phones, which are not
verified for the Qi specification (
).
• When placing your cellular phone on the charging mat, position the
phone in the middle of the mat for
optimal charging performance. If
your cellular phone is off to the side,
the charging rate may be less and in
some cases the cellular phone may
experience higher heat conduction.
• In some cases, the wireless charging may stop temporarily when the
Remote Key or Smart Key is used,
either when starting the vehicle or
locking/unlocking the doors, etc.
• When charging certain cellular phones, the charging indicator
may not change to green when the
cellular phone is fully charged.

While Driving
6-4
WARNING
Carbon monoxide (CO) gas is toxic. Breathing CO can cause unconsciousness and
death.
Engine exhaust contains carbon monoxide which cannot be seen or smelled.
Do not inhale engine exhaust.
If at any time you smell engine exhaust inside the vehicle, open the windows
immediately. Exposure to CO can cause unconsciousness and death by asphyxiation.
Be sure the exhaust system does not leak.
The exhaust system should be checked whenever the vehicle is raised to change the
oil or for any other purpose. If you hear a change in the sound of the exhaust or if you
drive over something that strikes the underneath side of the vehicle, have the exhaust
system checked as soon as possible by an authorized HYUNDAI dealer.
Do not run the engine in an enclosed area.
Letting the engine idle in your garage, even with the garage door open, is a hazardous
practice. Run the engine only long enough to start the engine and to move the vehicle
out of the garage.
Avoid idling the engine for prolonged periods with people inside the vehicle.
If it is necessary to idle the engine for a prolonged period with people inside the
vehicle, be sure to do so only in an open area with the air intake set at "Fresh" and fan
control set to high so fresh air is drawn into the interior.
Keep the air intakes clear.
To assure proper operation of the ventilation system, keep the ventilation air intakes
located in front of the windshield clear of snow, ice, leaves, or other obstructions.
If you must drive with the trunk open:
Close all windows.
Open instrument panel air vents.
Set the air intake control at "Fresh", the air flow control at "Floor" or "Face", and the fan
control set to high.

06
6 -7
Key ignition switch positions
Switch
Position Action Notice
LOCKTo turn the ignition switch to the
LOCK position, put the key in at
the ACC position and turn the key
towards the LOCK position.
The ignition key can be removed in
the LOCK position.
(The shift button must be in the P
(Park) position)
ACC Electrical accessories are usable.
The steering wheel unlocks.
ON This is the normal key position when
the engine has started.
All features and accessories are usable.
The warning lights can be checked
when you turn the ignition switch
from ACC to ON. Do not leave the ignition switch in the ON position when the engine is
not running in order to prevent the
battery from discharging.
START To start the engine, turn the ignition
switch to the START position. The
switch returns to the ON position
when you let go of the key. The engine will crank until you
release the key.