2020 Hyundai Sonata sensor

06
6-75
Type AType AType BType B
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Check Blind-Spot Collision-Avoidance
Assist (BCA) system
If there is a problem with BCA system,
a w
arning message will appear. The
system will turn off automatically. BCW
will still operate even if BCA 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.
• The system may not work around 15 seconds after starting the vehicle or
the initialization or rebooting of the
front view camera.
• When a trailer or carrier is installed.
• The vehicle drives in inclement weather such as heavy rain or snow.
• The sensors are polluted with rain, snow, mud, etc.
• The rear bumper where the 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.
• 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 vehicle drives through a tollgate.
• 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 Driving6-76
• 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 or
structure 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 abruptly changes driving direction.
• The vehicle makes sharp lane changes.
• 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.
• Lane Keeping Assist does not operate normally. (if equipped)
• For more information, refer to “Lane Keeping Assist (LKA)” in this chapter.

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Information
The system may suggest a break according
to the driver’s driving pattern or habits
even if the driver doesn’t feel fatigue.
NOTICE
• Driver Attention Warning system
utilizes the camera sensor on the
front windshield for its operation. To
keep the camera sensor in the best
condition, you should observe the
followings:
• Never install any accessories or
stickers on the front windshield, or
tint the front windshield.
• NEVER place any reflective objects
(i.e. white paper, mirror) over the
dashboard. Any light reflection
may cause a malfunction of Driver
Attention Warning system.
• Pay extreme caution to keep the
camera sensor dry.
• Never disassemble the camera
assembly, or apply any impact on the
camera assembly.
If the sensor is forcibly moved out
of proper alignment, the system
may not operate correctly. Have the
vehicle inspected by an authorized
HYUNDAI dealer.
CAUTION
• Driver Attention Warning system may
not provide alerts in the following
situations:
• Driver Attention Warning system
is using the front view camera. To
optimize the function of the front
view camera, the driver should
manage carefully. For detailed
information, please refer to the
warning statements in Lane Keeping
Assist system section.
• The lane detection performance
is limited. (For more information,
refer to “Lane Keeping Assist (LKA)”
section in this chapter.)
• The vehicle is erratically driven
or is abruptly turned for obstacle
avoidance (e.g. construction area,
other vehicles, fallen objects, bumpy
road).
• Forward drivability of the vehicle is
severely undermined (possibly due
to wide variation in tire pressures,
uneven tire wear-out, toe-in/toe-out
alignment).
• The vehicle is driven on a curvy road.
• The vehicle is driven through a windy
area.
• The vehicle is driven on a bumpy
road.
• The vehicle is controlled by the
following driving assist systems:
- Forward Collision-Avoidance Assist
system
- Lane Keeping Assist system
- Smart Cruise Control system
- Lane Following Assist system
CAUTION
Playing the vehicle audio system at
high volume may prevent occupants
from hearing Driver Attention Warning
system warning sounds.

06
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Limitations
The leading Vehicle Departure Alert
function may not properly operate
with limited alerting in the following
situations:
OADAS021SDOADAS021SD
[A] : Your vehicle
• When a vehicle cuts in front of your
vehicle (No vehicle ahead)
If a vehicle cuts in front of your vehicle within the sensor to detect distance to
the vehicle ahead, it may not operate
to alert.
OADAS022SDOADAS022SD
[A] : Your vehicle, [B] : Vehicle in front
• When a vehicle cuts in front of your
vehicle (vehicle ahead)
According to the cut-in position, the function may operate to alert the
driver or it may not alert the driver of
the departure of the vehicle in front or
the vehicle cut in.
OADAS023SDOADAS023SD
[A] : Your vehicle, [B] : Vehicle in front
• When a vehicle in front turns right or
left or makes a U-turn
If a vehicle in front turns the steering wheel rapidly and drives away from a
closer distance, it may not operate to
alert the driver.
OADAS024SDOADAS024SD
• When a vehicle in front makes a
quick start
If a vehicle in front makes a quick start, the function may alert earlier or
it may not alert to the driver.

While Driving6-92
To temporarily accelerate with
Smart Cruise Control on
If you want to speed up temporarily
when Smart Cruise Control is on, depress
the accelerator pedal. Increased speed
will not interfere with Smart Cruise
Control operation or change the set
speed.
To return to the set speed, take your foot
off the accelerator pedal.
If you push the toggle switch down
(SET-) at increased speed, the set speed
is updated.
Information
Be careful when accelerating temporarily,
because the speed is not controlled
automatically at this time even if there is a
vehicle in front of you.
Smart Cruise Control will be
temporarily canceled when:
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Cancelled manually
• Depressing the brake pedal.
• Pushing the CANCEL (CNCL) button located on the steering wheel.
Smart Cruise Control turns off
temporarily when the Set Speed and
Vehicle-to-Vehicle Distance indicator on
the LCD display turns off.
The cruise indicator (
) is illuminated
continuously.
Cancelled automatically
• The driver’s door is opened.
• The vehicle is shifted to N (Neutral), R (Reverse) or P (Park).
• The parking brake is applied.
• The vehicle speed is over 120 mph (190 km/h).
• The ESC (Electronic Stability Control), TCS (Traction Control System) or ABS
is operating.
• The ESC is turned off.
• The sensor or the cover is dirty or blocked with foreign matter.
• The vehicle is stopped for a certain period of time.

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Sensor to detect distance to the
vehicle ahead (Front view camera
and Front Radar)
Front view cameraFront view camera
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Front view camera
The front view camera is a sensor
de
tecting the lane. If the sensors are
covered with snow, rain or foreign
substance, the system may temporarily
be cancelled and not work properly
until the system is cancelled due to the
degradation of the sensor’s detection
performance. Always keep the sensor
clean.
 Refer to “Lane Keeping Assist (LKA)” for cautions for the front camera.
Front radarFront radar
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Front radar
The front radar is a sensor detecting
v
ehicles in front and maintains the
distance between them. If the sensors are covered with snow, rain
or foreign substance, the system may
temporarily be cancelled and not work
properly until the system is cancelled
due to the degradation of the sensor’s
detection performance. Always keep the
sensor clean.
CAUTION
•
Do not apply license plate frame or
foreign objects such as a bumper
sticker or a bumper guard near the
radar sensor. Doing so may adversely
affect the sensing performance of
the radar.
• Always keep the radar sensor and
lens cover clean and free of dirt and
debris.
• Use only a soft cloth to wash the
vehicle. Do not spray pressurized
water directly on the sensor or
sensor cover.
• Be careful not to apply unnecessary
force on the radar sensor or sensor
cover. If the sensor is forcibly
moved out of proper alignment,
Smart Cruise Control system
may not operate correctly. In this
case, a warning message may not
be displayed. Have the vehicle
inspected by an authorized HYUNDAI
dealer.
• If the front bumper becomes
damaged in the area around the
radar sensor, Smart Cruise Control
system may not operate properly.
Have the vehicle inspected by an
authorized HYUNDAI dealer.
• Use only genuine HYUNDAI parts to
repair or replace a damaged sensor
or sensor cover. Do not apply paint to
the sensor cover.

While Driving6-100
Warning message
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Smart Cruise Control disabled.
Radar blocked
When the sensor lens cover is blocked
with dirt, sno
w, or debris, Smart Cruise
Control system operation may stop
temporarily. If this occurs, a warning
message will appear on the cluster LCD
display. Remove any dirt, snow, or debris
and clean the radar sensor lens cover
before operating Smart Cruise Control
system. Smart Cruise Control system
may not properly activate, if the radar is
totally covered, or if any substance is not
detected after turning on the engine
(e.g. in an open terrain).
Information
For the SCC operation is temporarily
stopped if the radar is blocked, but you
wish to use cruise control mode (speed
control function), you must convert to the
cruise control mode (refer to "To convert
to Cruise Control mode" in the following
page.
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Check Smart Cruise Control System
The message will appear when the
v
ehicle to vehicle distance control
system is not functioning normally.
Have the vehicle inspected by an
authorized HYUNDAI dealer.

While Driving6-102
Lane changing
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• A vehicle which moves into your lane from an adjacent lane cannot be
recognized by the sensor until it is in
the sensor's detection range.
• The radar may not detect immediately when a vehicle cuts in suddenly.
Always pay attention to the traffic,
road and driving conditions.
• If a slower vehicle moves into your lane, your speed may decrease to
maintain the distance to the vehicle
ahead.
• If a faster vehicle which moves into your lane, your vehicle will accelerate
to the set speed.
Vehicle recognition
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• Some vehicles in your lane cannot be recognized by the sensor:
- Narrow vehicles such as motorcycles or bicycles
- Vehicles offset to one side
- Slow-moving vehicles or sudden- decelerating vehicles
- Stopped vehicles
- Vehicles with small rear profile such as trailers with no loads
• A vehicle ahead cannot be recognized correctly by the sensor if any of
following occurs:
- When the vehicle is pointing upwards due to overloading in the
luggage compartment
- While the steering wheel is operating
- When driving to one side of the lane
- When driving on narrow lanes or on curves
Apply the brake or accelerator pedal if
necessary.