2021 HYUNDAI TUCSON brake sensor

2-70
Safety system of your vehicle
In an angled collision, the force of
impact may direct the occupants in a
direction where the air bags would
not be able to provide any additional
benefit, and thus the sensors may
not deploy any air bags.Just before impact, drivers often
brake heavily. Such heavy braking
lowers the front portion of the vehicle
causing it to "ride" under a vehicle
with a higher ground clearance. Air
bags may not inflate in this "under-
ride" situation because deceleration
forces that are detected by sensors
may be significantly reduced by such
"underride" collisions.Front air bags may not inflate in
rollover accidents because air bag
deployment could not provide protec-
tion to the occupants.
However, side and curtain air bags
may inflate when the vehicle is rolled
over by a side impact collision.
OTL035069OTLE038064OTL035068

Driving your vehicle
5
Before Driving ........................................................5-4
Before Entering the Vehicle ...........................................5-4
Before Starting ..................................................................5-4
Ignition Switch ........................................................5-6
Key Ignition Switch ...........................................................5-6
Engine Start/Stop Button................................................5-9
Automatic Transmission ......................................5-14
Automatic transmission operation ..............................5-14
Good Driving Practices ..................................................5-19
Braking System ....................................................5-21
Power Brakes ...................................................................5-21
Disc Brakes Wear Indicator ..........................................5-22
Parking Brake...................................................................5-22
Electronic Parking Brake (EPB)...................................5-24
Auto Hold ..........................................................................5-30
Anti-lock Brake System (ABS) ....................................5-33
Electronic Stability Control (ESC)................................5-35
Vehicle Stability Management (VSM).........................5-39
Hill-Start Assist Control (HAC) ....................................5-40
Downhill Brake Control (DBC) ......................................5-40
Good Braking Practices .................................................5-42
All Wheel Drive (AWD) ........................................5-43
AWD operation.................................................................5-45
Emergency precautions .................................................5-49
Drive Mode Integrated Control System ............5-51
Blind-Spot Collision Warning (BCW) System...5-52
BCW (Blind-Spot Collision Warning) ..........................5-53
RCCW (Rear Cross-Traffic Collision Warning) .........5-55
Blind-Spot Collision Warning - Sensor Location ....5-57
Limitations of the System .............................................5-58
Declaration of conformity .................................5-59
The radio frequency components
(Rear Corner Radar) complies: ....................................5-59
Forward Collision-Avoidance Assist (FCA)
System - Camera Type........................................5-60
System Setting and Activation.....................................5-60
FCA Warning Message and System Control ............5-63
FCA Sensor .......................................................................5-65
System Not Operating....................................................5-67
Limitations of the System .............................................5-68
Forward Collision-Avoidance Assist (FCA)
System - Sensor Fusion Type
(Front Radar + Front Camera) ...........................5-73
System Setting and Activation.....................................5-73
FCA Warning Message and System Control ............5-76
FCA Sensor .......................................................................5-77
System Not Operating....................................................5-79
Limitations of the System .............................................5-81

5-77
Driving your vehicle
5
Brake operation
The braking system enters into the
ready status to react promptly to
urgent situations.
The FCA provides additional brak-
ing power for optimum braking per-
formance, when the driver depress-
es the brake pedal.
The braking control is automatical-
ly deactivated, when the driver
sharply depresses the accelerator
pedal, or when the driver abruptly
operates the steering wheel.
The FCA brake control is automat-
ically canceled, when risk factors
disappear.
FCA Sensor
In order for the FCA system to oper-
ate properly, always make sure the
view on the windshield near the cam-
era and front radar sensor are clean
and free of dirt, snow, and debris.
The driver should always use
extreme caution while operat-
ing the vehicle, whether or not
there is a warning message or
alarm from the FCA system.
If any other warning sound
such as seat belt warning
chime is already generated,
the Forward Collision-
Avoidance Assist (FCA) sys-
tem warning may not sound.
CAUTION
The braking control cannot
completely stop the vehicle nor
avoid all collisions. The driver
should hold the responsibility
to safely drive and control the
vehicle.
WARNING
The FCA system logic operates
within certain parameters, such
as the distance from the vehicle
or pedestrian ahead, the speed
of the vehicle ahead, and the
driver's vehicle speed. Certain
conditions such as inclement
weather and road conditions
may affect the operation of the
FCA system.
WARNING
Never deliberately drive danger-
ously to activate the system.
WARNING
OTLE058181
OTLE058182
■ Front camera
■ Front radar

5-80
Driving your vehicle
Even if there is any problem
with the brake control function
of the FCA system, the vehi-
cle's basic braking perform-
ance will operate normally.
However, brake control func-
tion for avoiding collision will
not activate.
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.
The FCA system may activate
during braking and the vehi-
cle may stop suddenly shift-
ing loose objects toward the
passengers. Always keep
loose objects secured.
The FCA system may not acti-
vate if the driver applies the
brake pedal to avoid a colli-
sion.
The brake control may not
work, possibly causing a colli-
sion, if a vehicle in front
abruptly stops. Always pay
extreme caution.
The FCA is only a supplemen-
tal system for the driver's con-
venience. The driver should
hold the responsibility to con-
trol the vehicle operation. Do
not solely depend on the FCA
system. Rather, maintain a
safe braking distance, and, if
necessary, depress the brake
pedal to reduce the driving
speed.
In certain instances and
under certain driving condi-
tions, the FCA system may
unintentionally activate. This
initial warning message
appears on the LCD display
with a warning chime.
Also, in certain instances the
front radar sensor or camera
recognition system may not
detect the vehicle or pedestri-
an ahead. The FCA system
may not activate and the
warning message will not be
displayed.
WARNING Occupants may get injured, if
the vehicle abruptly stops by
the activated FCA system. Pay
extreme caution.
The FCA system operates
only to help detect vehicles or
pedestrians in front of the
vehicle.
The FCA system does not
operate when the vehicle is in
reverse.
The FCA system is not
designed to detect other
objects on the road such as
animals.
The FCA system does not
detect vehicles in the oppo-
site lane.
The FCA system does not
detect cross traffic vehicles
that are approaching.
WARNING

5-81
Driving your vehicle
5
Limitations of the System
The Forward Collision-Avoidance
Assist (FCA) system is designed to
help monitor the vehicle ahead or a
pedestrian 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 sen-
sor or the camera may not be able to
detect the vehicle or pedestrian
ahead. In these cases, the FCA sys-
tem may not operate normally. The
driver must pay careful attention in
the following situations where the
FCA operation may be limited.
Detecting vehicles
The sensor may be limited when:
The radar sensor or camera is
blocked 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 electro-
magnetic waves
The vehicle is on unpaved or
uneven rough surfaces, or road
with sudden gradient changes.
The vehicle drives through a con-
struction area, on an unpaved
road, or above metal materials,
such as a railway
The radar/camera sensor recogni-
tion is limited
The vehicle in front is too small to
be detected (for example a motor-
cycle or a bicycle, etc.)The FCA system cannot
detect the driver approaching
the side view of a parked vehi-
cle (for example on a dead
end street.)
In these cases, you must main-
tain a safe braking distance,
and if necessary, depress the
brake pedal to reduce the driv-
ing speed in order to maintain a
safe distance.

5-83
Driving your vehicle
5
- Driving on a curve
The performance of Forward
Collision-Avoidance Assist system
may be limited when driving on a
curved road.
The front camera or radar sensor
recognition system may not detect
the vehicle or pedestrian traveling in
front on a curved road.
This may result in no alarm and brak-
ing 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 main-
tain a safe distance.Forward Collision-Avoidance Assist
system may recognize a vehicle or
pedestrian in the next lane or outside
the lane when driving on a curved
road.
If this occurs, the system may unnec-
essarily alarm the driver and apply
the brake.
Always pay attention to road and
driving conditions, while driving.- 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 camera or front radar sensor
recognition may not detect the vehi-
cle or pedestrian in front.
This may result in unnecessary
alarm and braking or no alarm and
braking when necessary.
When the system suddenly recog-
nizes the vehicle or pedestrian in
front while passing over a slope, you
may experience sharp deceleration.
OTM058073OTM058117OTLE058222

5-85
Driving your vehicle
5
- Detecting the vehicle in front of you
If 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, addi-
tional special attention is required.
The FCA system may not be able to
detect the cargo extending from the
vehicle. In these instances, you must
maintain a safe braking distance
from the rearmost object, and if nec-
essary, depress the brake pedal to
reduce your driving speed in order to
maintain distance.
Detecting pedestrians
The sensor may be limited when:
The pedestrian 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 is moving very
quickly or appears abruptly in the
camera detection area
The pedestrian is wearing clothing
that easily blends into the back-
ground, making it difficult to be
detected by the camera recogni-
tion 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 distin-
guish the pedestrian from other
objects in the surroundings, for
example, when there is a group of
pedestrians or a large crowd
There is an item similar to a per-
son's body structure
The pedestrian is small The pedestrian has impaired
mobility
The radar sensor or camera is
blocked 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
The brightness outside is too low
such as when the headlamps are
not on at night or the vehicle is
going through a tunnel
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 obstruct-
ed
OTLE058223

5-108
Driving your vehicle
To temporarily accelerate with
the Smart Cruise Control on
If you want to speed up temporarily
when the 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 cruis-
ing speed will be set again pedal.
Smart Cruise Control set speed
will be temporarily canceled
when:
Canceled manually
Depressing the brake pedal.
Pushing the CANCEL button locat-
ed on the steering wheel.
The 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.
Canceled automatically
The driver's door is opened.
The vehicle is shifted to N
(Neutral), R (Reverse) or P (Park).
The EPB (Electronic Parking
Brake) is applied.
The vehicle speed is over 120 mph
(190 km/h).
The vehicle stops on a steep incline.
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.
The vehicle stops and goes repeat-
edly for a long period of time.
The accelerator pedal is continu-
ously depressed for a long period
of time.
The engine performance is abnor-
mal.
Engine rpm is in the red zone. 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.
CAUTIONOTL055103