2021 HYUNDAI SONATA HYBRID lights

05
5-75
When High Beam Assist system is
operating, the high beam switches to low
beam if any of the following conditions
occur:
-When the headlamp of an on-coming
vehicle is detected.
-When the tail lamp of a vehicle in front
is detected.
-When the headlamp or tail lamp of a
motorcycle or a bicycle is detected.
-When the surrounding ambient light is
bright enough that high beams are not
required.
-When streetlights or other lights are
detected.
-When the headlamp switch is not in
the AUTO position.
-When High Beam Assist system is off.
-When vehicle speed is below 15 mph
(24 km/h).
OIK047132N
Warning light and message
When High Beam Assist system is not
working properly, the Check High Beam
Assist warning message will come on
for a few seconds. After the message
disappears, the master warning light (
)
will illuminate. Take your vehicle to an
authorized HYUNDAI dealer and have the
system checked.
CAUTION
The system may not operate normally if
any of the following conditions should
occur:
1. When the illumination from an on-
coming vehicle or a vehicle in front is
dim. Such examples may include:
• When the headlamps of an on-
coming vehicle or the tail lamps of
a vehicle in front is covered with
dust, snow, or water.
• When the headlamps on an on-
coming vehicle are OFF, but the
fog lamps are ON.

Convenient Features
5-78
NOTICE
If the driver exits the vehicle through
another door besides the driver
door, the battery saver function
does not operate and the headlamp
delay function does not turn OFF
automatically.
This may cause the battery to
discharge. To avoid battery discharge,
turn OFF the headlamps manually from
the headlamp switch before exiting the
vehicle.
Headlamp leveling device
It automatically adjusts the headlamp
beam level according to the number of
passengers and loading weight in the
luggage area.
And it offers proper headlamp beam
under various conditions.
WARNING
If the function does not work properly,
have the vehicle inspected by an
authorized HYUNDAI dealer. Do not
attempt to inspect or replace the wiring
yourself.
Interior Lights
WARNING
Do not use the interior lights when
driving in the dark. The interior lights
may obscure your view and cause an
accident.
NOTICE
Do not use the interior lights for
extended periods when the vehicle is
turned off or the battery will discharge.
Interior lamp AUTO cut
The interior lamps will automatically go
off approximately 20 minutes after the
engine is turned off and the doors are
closed. If a door is opened, the lamp
will go off 40 minutes after the engine is
turned off. If the doors are locked by the
remote key or smart key and the vehicle
enters the armed stage of the theft
alarm system, the lamps will go off five
seconds later.

06
6-5
Before Entering the Vehicle
• Be sure all windows, outside mirror(s),
and outside lights are clean and
unobstructed.
• Remove frost, snow, or ice.
• Visually check the tires for uneven
wear and damage.
• Check under the vehicle for any sign
of leaks.
• Be sure there are no obstacles behind
you if you intend to back up.
Before Starting
• Make sure the hood, the trunk, and
the doors are securely closed and
locked.
• Adjust the position of the seat and
steering wheel.
• Adjust the inside and side view
mirrors.
• Verify all the lights work.
• Fasten your seatbelt. Check that
all passengers have fastened their
seatbelts.
• Check the gauges and indicators
in the instrument panel and the
messages on the instrument display
when the ignition switch is in the ON
position.
• Check that any items you are carrying
are stored properly or fastened down
securely.
WARNING
To reduce the risk of SERIOUS INJURY or
DEATH, take the following precautions:
• ALWAYS wear your seat belt. All
passengers must be properly belted
whenever the vehicle is moving.
For more information, refer to "Seat
Belts" in chapter 3.
• Always drive defensively. Assume
other drivers or pedestrians may be
careless and make mistakes.
• Stay focused on the task of driving.
Driver distraction can cause
accidents.
• Leave plenty of space between you
and the vehicle in front of you.
WARNING
NEVER drink alcohol or take drugs and
drive.
Drinking alcohol or taking drugs and
driving is dangerous and may result in
an accident and SERIOUS INJURY or
DEATH.
Drunk driving is the number one
contributor to the highway death
toll each year. Even a small amount
of alcohol will affect your reflexes,
perceptions and judgment. Just
one drink can reduce your ability to
respond to changing conditions and
emergencies and your reaction time
gets worse with each additional drink.
Driving while under the influence
of drugs is as dangerous or more
dangerous than driving under the
influence of alcohol.
You are much more likely to have a
serious accident if you drink or take
drugs and drive. If you are drinking or
taking drugs, don't drive. Do not ride
with a driver who has been drinking
or taking drugs. Choose a designated
driver or call a taxi.
BEFORE DRIVING

06
6 -7
Engine Stop/Start button positions
Button
Position Action
Notice
OFF To turn off the engine, press the
Engine Start/Stop button with shift
button in P (Park).
When you press the Engine Start/
Stop button without the shift
button in P (Park), the Engine Start/
Stop button does not turn to the
OFF position, but turns to the ACC
position.
ACC Press the Engine Start/Stop button
when the button is in the OFF
position without depressing the
brake pedal.
Electrical accessories are usable. If you leave the Engine Start/Stop
button in the ACC position for more
than one hour, the battery power will
turn off automatically to prevent the
battery from discharging.
ON Press the Engine Start/Stop button
while it is in the ACC position
without depressing the brake pedal.
The warning lights can be checked
before the engine is started. Do not leave the Engine Start/Stop
button in the ON position when the
engine is not running to prevent the
battery from discharging.
START To start the engine, depress the
brake pedal and press the Engine
Start/Stop button with the shift
button in the P (Park) or in the N
(Neutral) position.
For your safety, start the engine
with the shift button in the P (Park)
position. If you press the Engine Start/Stop
button without depressing the brake
pedal, the engine does not start
and the Engine Start/Stop button
changes as follows:
OFF → ACC → ON → OFF or ACC
However, the engine may start if you
depress the brake pedal within 0.5
second after pressing the Engine
Start/Stop button from the OFF
position.

06
6-29
ESC operation
ESC ON condition
When the ignition switch is in the
ON position, the ESC and the ESC
OFF indicator lights illuminate for
approximately three seconds. After both
lights go off, the ESC is enabled.
When operating
When the ESC is in operation,
the ESC indicator light blinks:
• When you apply your brakes under
conditions which may lock the wheels,
you may hear sounds from the brakes,
or feel a corresponding sensation in
the brake pedal. This is normal and it
means your ESC is active.
• When the ESC activates, the engine
may not respond to the accelerator as
it does under routine conditions.
• If the Cruise Control was in use when
the ESC activates, the Cruise Control
automatically disengages. The Cruise
Control can be reengaged when the
road conditions allow. See "Cruise
Control System" later in this chapter.
(if equipped)
• When moving out of the mud or
driving on a slippery road, the engine
RPM (revolutions per minute) may
not increase even if you press the
accelerator pedal deeply. This is to
maintain the stability and traction of
the vehicle and does not indicate a
problem. ESC OFF condition
To cancel ESC operation:
•
State 1
Press the ESC OFF button briefly. The
ESC OFF indicator light and message
"Traction Control disabled" will
illuminate. In this state, the traction
control function of ESC (engine
management) is disabled, but the
brake control function of ESC (braking
management) still operates.
• State 2
Press and hold the ESC OFF button
continuously for more than 3 seconds.
The ESC OFF indicator light and message
"Traction and Stability Control disabled"
illuminates and a warning chime sounds.
In this state, both the traction control
function of ESC (engine management)
and the brake control function of ESC
(braking management) are disabled.
If the ignition switch is placed to the
LOCK/OFF position when ESC is off, ESC
remains off. Upon restarting the engine,
the ESC will automatically turn on again.

While Driving
6-30
Indicator lights
■ ESC indicator light (blinks)
■ ESC OFF indicator light (comes on)
When the ignition switch is placed to
the ON position, the ESC indicator light
illuminates, then goes off if the ESC
system is operating normally.
The ESC indicator light blinks whenever
the ESC is operating.
If ESC indicator light stays on, your
vehicle may have a malfunction with
the ESC system. When this warning light
illuminates have your vehicle checked by
an authorized HYUNDAI dealer as soon
as possible.
The ESC OFF indicator light comes on
when the ESC is turned off.
WARNING
When the ESC is blinking, this indicates
the ESC is active:
Drive slowly and NEVER attempt to
accelerate. NEVER turn the ESC off
while the ESC indicator light is blinking
or you may lose control of the vehicle
resulting in an accident.
NOTICE
Driving with wheels and tires with
different sizes may cause the ESC
system to malfunction. Before replacing
tires, make sure all four tires and wheels
are the same size. Never drive the
vehicle with different sized wheels and
tires installed.
ESC OFF usage
When Driving
The ESC OFF mode should only be used
briefly to help free the vehicle if stuck in
snow by temporarily stopping operation
of the ESC to maintain wheel torque.
To turn ESC off while driving, press the
ESC OFF button while driving on a flat
road surface.
NOTICE
To prevent damage to the transmission:
• Do not allow wheel(s) of one axle to
spin excessively while the ESC, ABS,
and parking brake warning lights
are displayed. The repairs would not
be covered by the vehicle warranty.
Reduce engine power and do not
spin the wheel(s) excessively while
these lights are displayed.
• When operating the vehicle on
a dynamometer, make sure the
ESC is turned off (ESC OFF light
illuminated).
Information
Turning the ESC off does not affect ABS
or standard brake system operation.

06
6-47
Limitations of the System
Forward Collision avoidance assist
system is designed to monitor the
vehicle ahead or a pedestrian or cyclist
in the roadway through radar signals
and camera recognition to warn the
driver that a collision is imminent, and if
necessary, apply emergency braking.
In certain situations, the radar sensor
or the camera may not be able to
detect the vehicle, pedestrian or cyclist
ahead. In these cases, FCA system may
not operate normally. The driver must
pay careful attention in the following
situations where FCA operation may be
limited.
Detecting vehicle, pedestrian and
cyclist
The sensor may be limited when:
• The system may not operate for 15
seconds after the vehicle is started or
the camera is initialized
• The radar sensor or camera is covered
with a foreign object or debris
• The camera lens is contaminated due
to tinted, filmed or coated windshield,
damaged glass, or stuck of foreign
matter (sticker, bug, etc.) on the glass
• Inclement weather such as heavy rain
or snow obscures the field of view of
the radar sensor or camera
• There is interference by
electromagnetic waves •
There is severe irregular reflection
from the radar sensor
• The radar/camera sensor recognition
is limited
• The vehicle in front is too small to be
detected (for example a motorcycle
etc.)
• The vehicle in front is an oversize
vehicle or trailer that is too big to be
detected by the camera recognition
system (for example a tractor trailer,
etc.)
• The camera’s field of view is not well
illuminated (either too dark or too
much reflection or too much backlight
that obscures the field of view)
• The vehicle in front does not have
their rear lights or their rear lights
does not turned ON or their rear lights
are located unusually
• The outside brightness changes
suddenly, for example when entering
or exiting a tunnel
• Light coming from a street light or an
oncoming vehicle is reflected on a wet
road surface such as a puddle in the
road
• The field of view in front is obstructed
by sun glare or head light of oncoming
vehicle
• The windshield glass is fogged up; a
clear view of the road is obstructed
• The vehicle in front is driving
erratically
• The vehicle is on unpaved or uneven
rough surfaces, or road with sudden
gradient changes

06
6-133
Smooth Cornering
Avoid braking or gear changing in
corners, especially when roads are wet.
Ideally, corners should always be taken
under gentle acceleration.
Driving at Night
Night driving presents more hazards than
driving in the daylight. Here are some
important tips to remember:
• Slow down and keep more distance
between you and other vehicles, as it
may be more difficult to see at night,
especially in areas where there may
not be any street lights.
• Adjust your mirrors to reduce the glare
from other driver's headlamps.
• Keep your headlamps clean and
properly aimed. Dirty or improperly
aimed headlamps will make it much
more difficult to see at night.
• Avoid staring directly at the
headlamps of oncoming vehicles. You
could be temporarily blinded, and it
will take several seconds for your eyes
to readjust to the darkness.
Driving in the Rain
Rain and wet roads can make driving
dangerous. Here are a few things to
consider when driving in the rain or on
slick pavement:
• Slow down and allow extra following
distance. A heavy rainfall makes
it harder to see and increases the
distance needed to stop your vehicle.
• Turn OFF your Cruise Control.
• Replace your windshield wiper blades
when they show signs of streaking or
missing areas on the windshield.
• Tires should be properly maintained
with at least 2/32nds of an inch of
tread depth. If your tires do not have
enough tread, making a quick stop on
wet pavement can cause a skid and
possibly lead to an accident. See "Tire
Tread" in chapter 8.
• Turn on your headlamps to make it
easier for others to see you.
• Driving too fast through large puddles
can affect your brakes. If you must go
through puddles, try to drive through
them slowly.
• If you believe your brakes may be wet,
apply them lightly while driving until
normal braking operation returns.
Hydroplaning
If the road is wet enough and you are
going fast enough, your vehicle may
have little or no contact with the road
surface and actually ride on the water.
The best advice is SLOW DOWN when
the road is wet.
The risk of hydroplaning increases as
the depth of tire tread decreases, refer
to "Tire Tread" in chapter 8.