2020 KIA OPTIMA brake sensor

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Safety features of your vehicle
In an angled collision, the force ofimpact 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 vehi-
cle causing it to “ride” under a vehi-
cle with a higher ground clearance.
Air bags may not inflate in this
"under-ride" situation because
deceleration forces that are detect-
ed by sensors may be significantly
reduced by such “under-ride” colli-
sions. Front air bags may not inflate in all
rollover accidents where the
SRSCM indicates that the front air
bag deployment would not provide
additional occupant protection.
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Features of your vehicle
Types of warning sound
When an object is 120 cm to 61 cm(47 in. to 24 in.) from the rear
bumper: Buzzer beeps intermit-
tently.
When an object is 60 cm to 31 cm (24 in. to 12 in.) from the rear
bumper: Buzzer beeps more fre-
quently.
When an object is within 30 cm (12 in.) of the rear bumper:
Buzzer sounds continuously.
Non-operational conditions of
the parking distance warning-
reverse system
The parking distance warning-
reverse system may not operate
properly when:
1. Moisture is frozen to the sensor. (It will operate normally once the
moisture clears.)
2. The sensor is covered with foreign matter, such as snow or water, or
the sensor cover is blocked. (It will
operate normally when the materi-
al is removed or the sensor is no
longer blocked.)
3. Driving on uneven road surfaces (unpaved roads, gravel, bumps,
gradient).
4. Objects generating excessive noise (vehicle horns, loud motor-
cycle engines, or truck air brakes)
are within range of the sensor.
5. Heavy rain or water spray exists.
6. Wireless transmitters or mobile phones are within range of the
sensor.
7. The sensor is covered with snow.
8. Trailer towing. The detecting range may decrease
when:
1. The sensor is covered with foreign
matter such as snow or water.
(The sensing range will return to
normal when removed.)
2. Outside air temperature is extremely hot or cold.
The following objects may not be
recognized by the sensor:
1. Sharp or slim objects such as ropes, chains or small poles.
2. Objects which tend to absorb the sensor frequency such as clothes,
sound absorbent material or snow.
3. Undetectable objects smaller than 1 m (40 in.) in height and narrower
than 14 cm (6 in.) in diameter.

Driving your vehicle
Before driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
• Before entering vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
. . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Engine start/stop button . . . . . . . . . . . . . . . . . . . . . 5-7
. . . . . . . . . . . . . . 5-7

. . . . . . . . . . . . . . . . . . . . . . 5-9
Automatic transmission . . . . . . . . . . . . . . . . . . . . . 5-12
. . . . . . . . . . . . . . . 5-12
. . . . . . . . . . . . . . . . . . . . . . . . 5-18
Brake system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
. . . . . . . . . . . . . . . . . . . . . 5-21
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29
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. . . . . . . . . . . . . . 5-34
. . . . . . . . . . . . 5-39
. . . . . . . . . . . . . . . . . 5-40

Forward Collision-avoidance Assist (FCA) system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-43\
. . . . . . . . . . . . . . . . . . . 5-43
. . . . . . . . 5-45
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. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-49
. . . . . . . . . . . . . . . . . . . . . . . 5-51
Forward Collision-avoidance Assist (FCA) system - sensor fusion type (front radar+front view
camera) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-57
. . . . . . . . . . . . . . . . . . . 5-57
. . . . . . . . 5-59
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-61
. . . . 5-62
. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-64
. . . . . . . . . . . . . . . . . . . . . . . 5-65
Cruise Control System . . . . . . . . . . . . . . . . . . . . . . 5-72
. . . . . . . . . . . . . . . . . . . . . 5-73

. . . . . . . . . . . . . . . . . . 5-74
To temporarily accelerate with the cruise control on . 5-74
do one of the following . . . 5-74
5

Driving your vehicle
64
5
The system will operate normally
when such dirt, snow or debris is
removed.
However, the FCA system may not
properly operate in an area (e.g.
open terrain), where any substances
are not detected after turning ON the
engine.
Although a warning message will not
appear on the LCD display, the FCA
may not properly operate.System malfunction
When the FCA is not working prop-
erly, the FCA warning light ( ) will
illuminate and the warning mes-
sage will appear for a few seconds.
After the message disappears, the
master warning light ( ) will illu-
minate. In this case, have the vehi-
cle inspected by an authorized Kia
dealer.
The FCA warning message may appear along with the illumination
of the ESC warning light.
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WARNING
The FCA is only a supplemen-tal system for the driver's con-
venience. It is the driver's
responsibility to control 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 or stop the vehicle.
In certain instances and under certain driving condi-
tions, the FCA system may
activate unintentionally.
Also, due to sensing limita-
tions, in certain situations,
the front radar sensor or front
view camera recognition sys-
tem may not detect the vehi-
cle or pedestrians ahead. The
FCA system may not activate
and the warning message
may not be displayed.
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581
Driving your vehicle
Smart cruise control will be tem-porarily canceled when:
Cancelled manually
The smart cruise control is temporar-
ily canceled when the brake pedal is
depressed or the CANCEL button is
pressed. Depress the brake pedal
and press the CANCEL button at the
same time, when the vehicle is at a
standstill. The speed and vehicle to
vehicle distance indicator on the
cluster is disappeared and the
CRUISE indicator is illuminated con-
tinuously. Cancelled automatically
The driver's door is opened.
The shift lever is shifted to N
(Neutral), R (Reverse) or P (Paking).
The EPB (electronic parking brake) is applied.
The vehicle speed is over 180 km/h (110 mph)
The ESC, ABS or TCS is operating.
The ESC is turned off.
The sensor or the cover is dirty or blocked with foreign matter.
When the vehicle is stopped for over 5 minutes.
The driver starts driving by pushing the toggle switch up (RES+)/down
(SET-) or depressing the accelera-
tor pedal, after stopping the vehicle
with a vehicle stopped far away in
front.
Engine rpm is in the red zone.
The accelerator pedal is continu- ously depressed for long time. The engine speed is in dangerous
range.
The SCC system has malfunc- tioned.
When the braking control is operat- ed for Forward Collision-Avoidance
Assist (FCA).
The vehicle stops and goes repeat- edly for a long period of time.
When the parking brake is locked.
Engine has some problems.
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Driving your vehicle
If you push the smart cruise controltoggle switch (RES+ or SET-) while
Auto Hold and smart cruise control
is operating, the Auto Hold will be
released regardless of accelerator
pedal operation and the vehicle will
start to move. The AUTO HOLD
indicator changes from green to
white. (if equipped with EPB
(Electronic Parking Brake))Radar to detect distance to the
vehicle ahead
The sensor detects the distance to
the vehicle ahead.
If the sensor is covered with dirt or
other foreign matter, the vehicle to
vehicle distance control may not
operate correctly.
Always keep the area in front of the
sensor clean.
Warning message
When the sensor lens cover is cov-
ered with dirt, snow, or debris, the
Smart Cruise Control System opera-
tion may stop temporarily. If this
occurs, a warning message will
appear on the LCD display. Remove
any dirt, snow, or debris and clean the
radar sensor lens cover before operat-
ing the Smart Cruise Control System.
The Smart Cruise Control system may
not properly activate, if the radar is
totally blocked, or if any substance is
not detected after turning ON the
engine (e.g. in an open terrain).OJFHP058304L
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Driving your vehicle
On inclines
During uphill or downhill driving,the smart cruise control system
may not immediately detect a mov-
ing vehicle in your lane, and may
cause your vehicle to accelerate to
the set speed. Also, the vehicle
speed will rapidly down when the
vehicle ahead is recognized sud-
denly.
Select the appropriate set speed on inclines and adjust your vehicle
speed by depressing the accelera-
tor or brake pedal according to the
road and driving conditions ahead.
Lane changing
A vehicle which moves into yourlane from an adjacent lane cannot
be recognized by the sensor until it
is in the sensor's detection range.
The sensor may not detect imme- diately when a vehicle cuts in sud-
denly. Always pay attention to the
traffic, road and driving conditions.
If a vehicle which moves into your lane is slower than your vehicle,
your speed may decrease to main-
tain the distance to the vehicle
ahead. If a vehicle which moves into your
lane is faster than your vehicle,
your vehicle will accelerate to the
selected speed.
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Driving your vehicle
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5
Your vehicle may accelerate when
a vehicle ahead of you disappears.
When you are warned that the vehicle ahead of you is not detect-
ed, drive with caution.
Vehicle recognition
Some vehicles ahead in your lane
cannot be recognized by the sensor
as follows:
- Narrow vehicles such as motorcy-cles or bicycles
- Vehicles offset to one side
- Slow-moving vehicles or sudden- decelerating vehicles
- Stopped vehicles
- Vehicles with small rear profiles such as trailers with no loads A vehicle ahead cannot be recog-
nized correctly by the sensor if any of
following occurs:
- When the vehicle is pointing
upwards due to overloading in the
trunk(tailgate)
- While making turns by steering
- When driving to one side of the lane
- When driving on narrow lanes or on curves
Adjust your vehicle speed by
depressing the brake pedal accord-
ing to the road condition ahead and
driving condition.
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