2020 Hyundai Sonata Speed Sensor B

While Driving6-40
Forward Collision-Avoidance Assist
system is designed to detect the
vehicle, a pedestrian or cyclist ahead (if
equipped) in the roadway through front
radar signals and front view camera
recognition to warn the driver that a
collision is imminent, and if necessary,
apply emergency braking.
WARNING
Take the following precautions when
using Forward Collision-Avoidance
Assist system:
• This system is only a supplemental
system and it is not intended to,
nor does it replace the need for
extreme care and attention of
the driver. The sensing range and
objects detectable by the sensors
are limited. Pay attention to the road
conditions at all times.
• Drive at posted speed limits and
accordance to road conditions.
• Always drive cautiously to prevent
unexpected and sudden situations
from occurring. FCA does not always
stop the vehicle completely.
System Setting and Activation
System setting
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• Setting Forward Safety function
The driver can activate FCA by placing
the ignition switch to the ON position
and by selecting:
‘User Settings → Driver Assistance →
Forward Safety’ - If you select ‘Active Assist’, FCA system activates. FCA produces
warning messages and warning
alarms in accordance with the
collision risk levels. Braking assist
will be applied in accordance with
the collision risk.
- If you select ‘Warning Only’, FCA system activates and produces only
warning alarms in accordance with
the collision risk levels. Braking
assist will not be applied in this
setting.
- If you select ‘Off’, FCA system deactivates. If you turn the ESC off
stage 2, FCA deactivates and the
warning light comes on.
FORWARD COLLISION – AVOIDANCE ASSIST (FCA) - SENSOR
FUSION (IF EQUIPPED)

06
6-47
System Malfunction
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Check Forward Collision Avoidance Assist
system
When FCA is not working properly, FCA
w
arning light () will illuminate and the
warning message will appear for a few
seconds. After the message disappears,
the master warning light (
) will
illuminate. In this case, have the vehicle
inspected by an authorized HYUNDAI
dealer.
The FCA warning message may appear
along with the illumination of the ESC
(Electronic Stability Control) warning
light. Both FCA warning light and
warning message will disappear once the
ESC warning light issue is resolved.
WARNING
• FCA is only a supplemental system
for the driver's convenience. The
driver should hold the responsibility
to control the vehicle operation. Do
not solely depend on FCA system.
Rather, maintain a safe braking
distance, and, if necessary, depress
the brake pedal to reduce the driving
speed or to stop the vehicle.
• In certain instances and under
certain driving conditions, FCA
system may activate unintentionally.
This initial warning message appears
on the LCD display with a warning
chime.
Also due to sensing limitations, in
certain situations, the front radar
sensor or camera recognition
system may not detect the vehicle,
pedestrian or cyclist (if equipped)
ahead. FCA system may not activate
and the warning message may not be
displayed.
• Even if there is any problem with
the brake control function of FCA
system, the vehicle’s basic braking
performance will operate normally.
However, brake control function for
avoiding collision will not activate.

While Driving6-48
• If the vehicle in front stops suddenly,
you may have less control of the
brake system. Therefore, always keep
a safe distance between your vehicle
and the vehicle in front of you.
• FCA system may activate during
braking and the vehicle may stop
suddenly shifting loose objects
toward the passengers. Always keep
loose objects secured and fasten the
seat belt.
• FCA system may not activate if the
driver applies the brake pedal to
avoid collision.
• The brake control may be
insufficient, possibly causing a
collision, if a vehicle in front abruptly
stops. Always pay extreme caution.
• Occupants may get injured, if
the vehicle abruptly stops by the
activated FCA system. Pay extreme
caution.
• FCA system operates only when the
system detect vehicles, pedestrian or
cyclist in front of the vehicle.
• FCA system may not activate
according to road conditions,
inclement weather, driving
conditions or traffic conditions.
• FCA system may not work for all
vehicles, passengers or cyclists. WARNING
• FCA system does not operate when
the vehicle is in reverse.
• FCA system is not designed to detect
other objects on the road such as
animals.
• FCA system does not detect vehicles
in the opposite lane.
• FCA system does not detect cross
traffic vehicles that are approaching.
• FCA system cannot detect vehicles
that are stopped vertically to your
vehicle at a intersection or dead end
street.
• FCA system cannot detect the cross
traffic cyclist that are approaching.
In these cases, you must maintain a
safe braking distance, and if necessary,
depress the brake pedal to reduce the
driving speed in order to maintain a
safe distance or to stop the vehicle.
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.

06
6-49
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
• The vehicle is driven near areas containing metal substances as a
construction zone, railroad, etc.
• The vehicle drives inside a building, such as a basement parking lot
• The camera does not recognize the entire vehicle in front
• The camera is damaged
• The brightness outside is too low such as when the headlamps are not on at
night or the vehicle is going through
a tunnel
• The shadow is on the road by a median strip, trees, etc.
• The vehicle drives through a tollgate
• The windshield glass is fogged up; a clear view of the road is obstructed
• The rear part of the vehicle in front is not normally visible (the vehicle turns
in other direction or the vehicle is
overturned.)
• The adverse road conditions cause excessive vehicle vibrations while
driving
• The sensor recognition changes suddenly when passing over a speed
bump
• The vehicle in front is moving vertically to the driving direction
• The vehicle in front is stopped vertically
• The vehicle in front is driving towards your vehicle or reversing
• You are on a roundabout and the vehicle in front circles

While Driving6-50
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• Driving on a curve The performance of Forward Collision-
Avoidance Assist system may be
limited when driving on a curved road.
The front view camera or radar sensor
recognition system may not detect the
vehicle, pedestrian or cyclist traveling
in front on a curved road. This may
result in no alarm and braking when
necessary.
Always pay attention to road and
driving conditions, and if necessary,
depress the brake pedal to reduce
your driving speed in order to
maintain a safe distance.

While Driving6-52
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• Driving on a slope The performance of Forward Collision-
Avoidance Assist system may be
decreased while driving upward or
downward on a slope.
The front view camera or front radar
sensor recognition may not detect the
vehicle, pedestrian or cyclist in front.
This may result in unnecessary alarm
and braking or no alarm and braking
when necessary.
When the system suddenly recognizes
the vehicle, pedestrian or cyclist in
front while passing over a slope, you
may experience sharp deceleration.
Always keep your eyes forward while
driving upward or downward on a
slope, and, if necessary, depress the
brake pedal to reduce your driving
speed in order to maintain distance.

While Driving6-54
• The pedestrian or cyclist is not fully detected by the camera recognition
system, for example, if the pedestrian
is leaning over or is not fully walking
upright
• The pedestrian or cyclist is moving very quickly or appears abruptly in the
camera detection area
• The pedestrian or cyclist is wearing clothing that easily blends into the
background, making it difficult to be
detected by the camera recognition
system
• The outside lighting is too bright (e.g. when driving in bright sunlight or
in sun glare) or too dark (e.g. when
driving on a dark rural road at night)
• It is difficult to detect and distinguish the pedestrian or cyclist from other
objects in the surroundings, for
example, when there is a group of
pedestrians, cyclists or a large crowd
• There is an item similar to a person’s body structure
• The pedestrian or cyclist is small
• The pedestrian has impaired mobility
• The sensor recognition is limited • The radar sensor or camera is blocked
with a foreign object or debris
• Inclement weather such as heavy rain or snow obscures the field of view of
the radar sensor or camera
• When 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
• The windshield glass is fogged up; a clear view of the road is obstructed
• The adverse road conditions cause excessive vehicle vibrations while
driving
• The sensor recognition changes suddenly when passing over a speed
bump
• You are on a roundabout
• The pedestrian or cyclist suddenly interrupts in front of the vehicle
• The cyclist in front is riding intersected with the driving direction
• There is any other electromagnetic interference
• The construction area, rail or other metal object is near the cyclist
• The bicycle material is not reflected well on the radar
WARNING
Turn off Forward Collision avoidance
Assist system through cluster or
infotainment system before towing
a vehicle. Application of FCA system
while towing may adversely affect the
safety of your vehicle or the towing
vehicle.
Use extreme caution when the vehicle
in front of you has cargo that extends
rearward from the cab, or when the
vehicle in front of you has higher
ground clearance.

While Driving6-58
Limitations of the system
FCA-Junction Turning function is only a
supplemental system for driver’s safety
whilst turning left on the crossroads. The
driver should hold the responsibility to
control the vehicle. The system monitors
the oncoming vehicle ahead the road
through the front view camera and
radar. In certain situations, the front view
camera and radar may not be able to
detect the oncoming vehicles properly.
The driver must pay careful attention
in the following situations where the
system operation may be limited or it
may activate unintentionally.
The sensor may be limited when:
• The radar sensor or camera r
ecognizes the approaching vehicle
too late.
• The radar sensor or camera is blocked with a foreign object or debris.
• The driving direction of the approaching vehicle is irregular or
frontal.
• The approaching vehicle changes lanes too late or decelerates suddenly.
• The angle of the approaching vehicle is out of range.
• Whilst circling, the sensor (the front view camera or front radar) does not
detect the approaching vehicle.
• The driving speed of the approaching vehicle is too fast or slow.
• The head lamps of the approaching vehicle are turned off or asymmetrical. • The approaching vehicle stops whilst
turning left.
• The vehicle moves out of its lane or returns to its lane.
• The vehicle changes lanes suddenly at a low speed whilst there is an
approaching vehicle.
• The brightness outside is too so it does not detect the vehicle.
• Inclement weather such as heavy rain or snow obscures the field of view of
the front view camera or front radar.
• The approaching vehicle is covered with snow.
• The field of view in front is obstructed by sun glare.
• The shape of approaching vehicle is unusual.
• Whilst driving upward or downward on a slope.
For more information, refer to “Forward
Collision-Avoidance Assist (FCA)” in this
chapter.