2021 HYUNDAI SONATA Owners Manual

06
6-133
CAUTION
• When the operation condition of
Rear Cross-Traffic Collision Warning
system is satisfied, the warning
will occur every time a vehicle
approaches the side or rear of your
stopped (0 mph (0 km/h) vehicle
speed) vehicle.
• The system’s warning or brake may
not operate properly if the left or
right of your vehicle’s rear bumper is
blocked by a vehicle or obstacle.
• The driver should always use
extreme caution while operating
the vehicle, whether or not the
warning light on the side view mirror
illuminates or there is a warning
alarm.
• Playing the vehicle audio system at
high volume may offset the system’s
warning sounds.
• The warning of Rear Cross-Traffic
Collision Warning System may not
sound while other system’s warning
sounds.
• If any other warning sound such as
seat belt warning chime is already
generated, Rear Cross-Traffic
Collision Warning system warning
may not sound.
WARNING
• Drive safely even though the vehicle
is equipped with Rear Cross-Traffic
Collision Warning system and Rear
Cross-Traffic Collision-Avoidance
Assist system. Do not solely rely
on the system but check your
surrounding when backing the
vehicle up.
• The driver is responsible for accurate
brake control.
• Always pay extreme caution while
driving. Rear Cross-Traffic Collision
Warning system and Rear Cross-
Traffic Collision-Avoidance Assist
system may not operate properly or
unnecessarily operate in accordance
with your driving situations.
• Rear Cross-Traffic Collision-
Avoidance Assist system is not a
substitute for safe driving practices,
but a convenience function only. It
is the responsibility of the driver to
always drive cautiously to prevent
unexpected and sudden situations
from occurring. Pay attention to the
road conditions at all times.

6-134
Detecting Sensors
ODN8069031L
The rear corner radars are the sensors
inside the rear bumper for detecting the
side and rear areas. Always keep the rear
bumper clean for proper operation of the
system.
CAUTION
• The system may not work properly
when the bumper has been
damaged, or if the rear bumper has
been replaced or repaired.
• The system may turn off due to
strong electromagnetic waves.
• Always keep the sensors clean.
• NEVER arbitrarily disassemble the
sensor component nor apply any
impact on the sensor component.
• Be careful not to apply unnecessary
force on the radar sensor or sensor
cover. If the sensor is forcibly moved
out of proper alignment, the system
may not operate correctly. In this
case, a warning message may not
be displayed. Have the vehicle
inspected by an authorized HYUNDAI
dealer.
• Do not apply foreign objects such as
a bumper sticker or a bumper guard
near the radar sensor or apply paint
to the sensor area. Doing so may
adversely affect the performance of
the sensor.
Warning message
OIK057092L
Blind-Spot Collision Warning (BCW)
system disabled. Radar blocked
This warning message may appear when:
One or both of the sensors on the rear
bumper is blocked by dirt or snow or a
foreign object.
Driving in rural areas where the sensor
does not detect another vehicle for an
extended period of time.
When there is inclement weather such as
heavy snow or rain.
While Driving

06
6-135
If any of these conditions occur, the
system will turn off automatically.
When BCW canceled warning message
is displayed in the cluster, check to make
sure that the rear bumper is free from
any dirt or snow in the areas where the
sensor is located. Remove any dirt, snow,
or foreign material that could interfere
with the radar sensors.
After any dirt or debris is removed, the
system should operate normally after
about 10 minutes of driving the vehicle.
If the system still does not operate
normally have your vehicle inspected by
an authorized HYUNDAI dealer.
Information
Turn off BCW, BCA and RCCA system
when a trailer or carrier is installed.
Deactivate BCW and BCA system
by selecting “User Settings → Driver
Assistance → Blind-Spot Safety → Off”
Deactivate RCCW and RCCA system
by deselecting “User Settings → Driver
Assistance → Parking Safety → Rear
Cross-Traffic Safety”.
•„Type A•„Type B
OAD058169LOTM058151L
Check Blind-Spot Collision Warning
(BCW) system
If there is a problem with BCW system,
a warning message will appear. The
system will turn off automatically. RCCW
and RCCA will not operate also if BCW
system turns off due to malfunction.
Have the vehicle inspected by an
authorized HYUNDAI dealer.
Limitations of the System
The driver must be cautious in the below
situations, because the system may not
detect other vehicles or objects in certain
circumstances.
• When a trailer or carrier is installed.
• The vehicle drives in inclement
weather such as heavy rain or snow.
• The radar sensor is polluted with rain,
snow, mud, etc.
• The rear bumper where the radar
sensors are located is covered with
a foreign object such as a bumper
sticker, a bumper guard, a bike rack,
etc.
• The rear bumper is damaged, or the
sensor is out of the original default
position.

6-136
• The vehicle height gets lower or
higher due to heavy loading in a trunk,
abnormal tire pressure, etc.
• When the temperature of the rear
bumper is high.
• When the sensors are blocked by
other vehicles, walls or parking-lot
pillars.
• The vehicle drives on a curved road.
• The road pavement (or the peripheral
ground) abnormally contains metallic
components (i.e. possibly due to
subway construction).
• There is a fixed object near the
vehicle, such as a guardrail.
• While going down or up a steep
road where the height of the lane is
different.
• Driving on a narrow road where trees
or grass or overgrown.
• Driving in rural areas where the sensor
does not detect another vehicle for an
extended period of time.
• Driving on a wet road.
• Driving on a road where the guardrail
or wall is in double structure.
• A big vehicle is near such as a bus or
truck.
• When the other vehicle approaches
very close.
• When the other vehicle passes at a
very fast speed.
• While changing lanes. •
If the vehicle has started at the same
time as the vehicle next to you and
has accelerated.
• When the vehicle in the next lane
moves two lanes away from you or
when the vehicle two lanes away
moves to the next lane from you.
• A motorcycle or bicycle is near.
• A flat trailer is near.
• If there are small objects in the
detecting area such as a shopping
cart or a baby stroller.
• If there is a low height vehicle such as
a sports car.
• The brake pedal is depressed.
• ESC (Electronic Stability Control) is
activated.
• ESC (Electronic Stability Control)
malfunctions.
• The tire pressure is low or a tire is
damaged.
• The brake is reworked.
• The vehicle sharply stops.
• Temperature is extremely low around
the vehicle.
• The vehicle severely vibrates while
driving over a bumpy road, uneven/
bumpy road, or concrete patch.
• The vehicle drives on a slippery
surface due to snow, water puddle,
or ice.
• If the vehicle moves backward after
the vehicle is parked with a diagonal
line
While Driving

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OHI058316L
[A] : Structure
• Driving where there is a vehicle or
structure near
The system may not operate properly
when driving where there is a vehicle
or structure near.
In certain instances, the system may
not detect the vehicle approaching
from behind and the warning or brake
may not operate properly.
Always pay attention to your
surrounding while driving.
OHI058317L
• When the vehicle is in a complex
parking environment
The system may not operate properly
when the vehicle is in a complex
parking environment.
In certain instances, the system may
not be able to exactly determine the
risk of collision for the vehicles which
are parking or pulling out near your
vehicle (e.g. a vehicle escaping beside
your vehicle, a vehicle parking or
pulling out in the rear area, a vehicle
approaching your vehicle making a
turn, etc.).
In this case, the warning or brake may
not operate properly.

6-138
OHI058318L
[A] : Vehicle
• When the vehicle is parked diagonally
The system may not operate properly
when the vehicle is parked diagonally.
In certain instances, when the
diagonally parked vehicle is pulled out
of the parking space, the system may
not detect the vehicle approaching
from the rear left/right of your vehicle.
In this case, the warning or brake may
not operate properly.
Always pay attention to your
surrounding while driving.
ODN8069042L
• When the vehicle is on/near a slope
The system may not operate properly
when the vehicle is on/near a slope.
In certain instances, the system may
not detect the vehicle approaching
from the rear left/right and the
warning or brake may not operate
properly.
Always pay attention to your
surrounding while driving.
While Driving

06
6-139
OHI058319L
[A] : Structure, [B] : Wall
• Pulling into the parking space where
there is a structure
The system may not operate properly
when pulling in the vehicle to the
parking space where there is a
structure at the back or side of your
vehicle.
In certain instances, when backing
into the parking space, the system
may not detect the vehicle moving
in front of your vehicle. In this case,
the warning or brake may not operate
properly.
Always pay attention to the parking
space while driving.
OHI058320L
• When the vehicle is parked rearward
If the vehicle is parked rearward and
the radar sensor detects the another
vehicle in the rear area of the parking
space, the system can warn or control
braking. Always pay attention to the
parking space while driving.
Information
This device complies with Part 15 of the
FCC rules.
Operation is subject to the following two
conditions:
1.

This device may not cause harmful
interfer

ence.
2.

This device must accept any
interfer

ence received, including
interference that may cause undesired
operation.

6-140
Hazardous Driving Conditions
When hazardous driving elements
are encountered such as water, snow,
ice, mud and sand, take the below
suggestions:
• Drive cautiously and keep a longer
braking distance.
• Avoid abrupt braking or steering.
• When your vehicle is stuck in
snow, mud, or sand, use second
gear. Accelerate slowly to avoid
unnecessary wheel spin.
• Put sand, rock salt, tire chains or other
non-slip materials under the wheels to
provide additional traction while the
vehicle becomes stuck in ice, snow,
or mud.
WARNING
Downshifting with an automatic
transmission while driving on slippery
surfaces can cause an accident. The
sudden change in tire speed could
cause the tires to skid. Be careful when
downshifting on slippery surfaces.
Rocking the Vehicle
If it is necessary to rock the vehicle to
free it from snow, sand, or mud, first turn
the steering wheel right and left to clear
the area around your front wheels. Then,
shift back and forth between R (Reverse)
and a forward gear.
Try to avoid spinning the wheels, and do
not race the engine.
To prevent transmission wear, wait until
the wheels stop spinning before shifting
gears. Release the accelerator pedal
while shifting, and press lightly on the
accelerator pedal while the transmission
is in gear. Slowly spinning the wheels in
forward and reverse directions causes a
rocking motion that may free the vehicle.
WARNING
If the vehicle is stuck and excessive
wheel spin occurs, the temperature
of the tires can increase very quickly.
If the tires become damaged, a tire
blow out or tire explosion can occur.
This condition is dangerous - you and
others may be injured. Do not attempt
this procedure if people or objects are
anywhere near the vehicle.
If you attempt to free the vehicle, the
vehicle can overheat quickly, possibly
causing an engine compartment fire
or other damage. Try to avoid spinning
the wheels as much as possible to
prevent overheating of either the tires
or the engine. DO NOT allow the vehicle
to spin the wheels above 35 mph (56
km/h).
Information
The ESC system must be turned OFF
before rocking the vehicle.
NOTICE
If you are still stuck after rocking the
vehicle a few times, have the vehicle
pulled out by a tow vehicle to avoid
engine overheating, possible damage to
the transmission, and tire damage. See
"Towing" in chapter 7.
SpeCI al d r I v I n G Cond I t I on S
While Driving