2022 TOYOTA COROLLA sensor

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4
4-3. Operating the lights and wipers
Driving
WA R N I N G
■Caution regarding the use of
windshield wipers in AUTO mode
(vehicles with rain-sensing wind- shield wipers)
The windshield wipers may operate
unexpectedly if the sensor is touched or the windshield is subject to vibra-
tion in AUTO mode. Take care that
your fingers or anything else do not
become caught in the windshield wip- ers.
■Caution regarding the use of washer fluid
When it is cold, do not use the washer
fluid until the windshield becomes warm. The fluid may freeze on the
windshield and cause low visibility.
This may lead to an accident, result- ing in death or serious injury.
NOTICE
■When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump
may be caused if the lever is pulled
toward you and held continually.
■When a nozzle becomes blocked
In this case, contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.

1904-5. Using the driving support systems
4-5.Using the driving support systems
*: If equipped
■PCS (Pre-Collision System)
 P. 2 0 2
■LTA (Lane Tracing Assist)*
P. 2 0 9
*: If equipped
■LDA (Lane Departure Alert
with steering control)*
 P. 2 1 9
*: If equipped
■AHB (Automatic High Beam)
 P. 1 8 1
■RSA (Road Sign Assist)*
P. 2 5 4
*: If equipped
■Dynamic radar cruise control
with full-speed range*
 P. 2 2 7
*: If equipped
■Dynamic radar cruise control*
P. 2 3 8
*: If equipped
Two types of sensors, located
behind the front grille and wind-
shield, detect in formation neces-
sary to operate the drive assist
systems.
Radar sensor
Front camera
Toyota Safety Sense*
The Toyota Safety Sense con-
sists of the following drive
assist systems and contrib-
utes to a safe and comfortable
driving experience:
Driving assist system
WA R N I N G
■Toyota Safety Sense
The Toyota Safety Sense is designed
to operate under the assumption that the driver will drive safely, and is
designed to help reduce the impact to
the occupants and the vehicle in the case of a collision or assist the driver
in normal driving conditions.
As there is a limit to the degree of rec-
ognition accuracy and control perfor- mance that this system can provide,
do not overly rely on this system. The
driver is always responsible for paying attention to the vehicle’s surroundings
and driving safely.
Sensors

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4
4-5. Using the driving support systems
Driving
WA R N I N G
■To avoid malfunction of the radar
sensor
Observe the following precautions. Otherwise, the radar sensor may not
operate properly, possibly leading to
an accident resulting in death or seri- ous injury.
●Keep the radar sensor and the
radar sensor cover clean at all times.
Radar sensor
Radar sensor cover
If the front of the radar sensor or the
front or back of the radar sensor
cover is dirty or covered with water
droplets, snow, etc., clean it.
Clean the radar sensor and radar
sensor cover with a soft cloth to avoid
damaging them.
●Do not attach accessories, stickers
(including transparent stickers) or
other items to the radar sensor, radar sensor cover or surrounding
area.
●Do not subject the radar sensor or
its surrounding area to a strong
impact. If the radar sensor, front grille, or
front bumper has been subjected to
a strong impact, have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
●Do not disassemble the radar sen- sor.
●Do not modify or paint the radar sensor or radar sensor cover.
●In the following cases, the radar sensor must be recalibrated. Con-
tact any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer for details.
• When the radar sensor or front grile
are removed and installed, or replaced
• When the front bumper is replaced
■To avoid malfunction of the front
camera
Observe the following precautions.
Otherwise, the front camera may not
operate properly, possibly leading to an accident resulting in death or seri-
ous injury.
●Keep the windshield clean at all
times.
• If the windshield is dirty or covered with an oily film, water droplets,
snow, etc., clean the windshield.
• If a glass coating agent is applied to
the windshield, it will still be neces-
sary to use the windshield wipers to remove water droplets, etc. from
the area of the windshield in front of
the front camera.
• If the inner side of the windshield
where the front camera is installed is dirty, contact any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.

201
4
4-5. Using the driving support systems
Driving
●In the following situations, if the situation has changed (or the vehicle has been
driven for some time) and the normal operating conditions are detected, the mes- sage will disappear and the system will become operational.
If the message does not disappear, contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
• When the temperature around t he radar sensor is outside of the operational range,
such as when the vehicle is in the sun or in an extremely cold environment
• When the front camera cannot detect objects in front of the vehicle, such as when driving in the dark, snow, or fog, or when bright lights are shining into the front
camera
SituationActions
When the area around a sensor is cov-
ered with dirt, moisture (fogged up, cov-
ered with condensation, ice, etc.), or
other foreign matter
To clean the part of the windshield in
front of the front camera, use the wind-
shield wipers or the windshield defogger
of the air conditioning system ( P.381,
387).
When the temperature around the front
camera is outside of the operational
range, such as when the vehicle is in the
sun or in an extremely cold environment
If the front camera is hot, such as after
the vehicle had been parked in the sun,
use the air conditi oning system to
decrease the temperature around the
front camera.
If a sunshade was used when the vehicle
was parked, depending on its type, the
sunlight reflected from the surface of the
sunshade may cause the temperature of
the front camera to become excessively
high.
If the front camera is cold, such after the
vehicle is parked in an extremely cold
environment, use the air conditioning
system to increase the temperature
around the front camera.
The area in front of the front camera is
obstructed, such as when the hood is
open or a sticker is attached to the part of
the windshield in front of the front cam-
era.
Close the hood, remove the sticker, etc.
to clear the obstruction.

2024-5. Using the driving support systems
*: If equipped
The system can detect the follow-
ing:
 Vehicles
 Bicyclists
 Pedestrians
■Pre-collision warning
When the system determines that
the possibility of a frontal collision is
high, a buzzer will sound and a
warning mess age will be displayed
on the multi-information display to
urge the driver to take evasive
action.
■Pre-collision brake assist
When the system determines that
the possibility of a frontal collision is
high, the system applies greater
braking force in relation to how
strongly the brake pedal is
depressed.
■Pre-collision braking
If the system determines that the
possibility of a frontal collision is
extremely high, the brakes are
automatically applied to help avoid
the collision or reduce the impact of
the collision.
PCS (Pre-Collision Sys-
tem)*
The pre-collision system uses
a radar sensor and front cam-
era to detect objects ( P.205)
in front of the vehicle. When
the system determines that the
possibility of a frontal collision
with an object is high, a warn-
ing operates to urge the driver
to take evasive action and the
potential brake pressure is
increased to help the driver
avoid the collision. If the sys-
tem determines that the possi-
bility of a frontal collision with
an object is extremely high, the
brakes are automatically
applied to help avoid the colli-
sion or help reduce the impact
of the collision.
The pre-collision system can
be disabled/enabled and the
warning timing can be
changed. ( P.204)
Detectable objects
System functions

2044-5. Using the driving support systems
■Enabling/disabling the pre-col-
lision system
The pre-collisio n system can be
enabled/disabled on ( P.538)
of the multi-information display.
The system is auto matically enabled
each time the engine switch is turned to
ON.
If the system is disabled, the PCS
warning light will turn on and a
message will be di splayed on the
multi-information display.
■Changing the pre-collision
warning timing
The pre-collision warning timing
can be changed on ( P.538) of
the multi-information display.
The warning timing setting is retained
when the engine switch is turned off.
However, if the pr e-collision system is
disabled and re-enabled, the operation
timing will return to the default setting
(middle).
1 Early
2 Middle
WA R N I N G
●When inspecting the vehicle using
a drum tester such as a chassis
dynamometer or speedometer tester, or when using an on vehicle
wheel balancer
●When a strong impact is applied to
the front bumper or front grille, due
to an accident or other reasons
●If the vehicle cannot be driven in a
stable manner, such as when the
vehicle has been in an accident or is malfunctioning
●When the vehicle is driven in a sporty manner or off-road
●When the tires are not properly inflated
●When the tires are very worn
●When tires of a size other than
specified are installed
●When tire chains are installed
●When a compact spare tire or an
emergency tire puncture repair kit is
used
●If equipment (snow plow, etc.) that
may obstruct the radar sensor or front camera is temporarily installed
to the vehicle
Changing settings of the
pre-collision system

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4
4-5. Using the driving support systems
Driving
• When passing under an object (road
sign, billboard, etc.)
• When approaching an electric toll gate
barrier, parking area barrier, or other barrier that opens and closes
• When using an automatic car wash
• When driving through or under objects that may contact your vehicle, such as
thick grass, tree branches, or a ban-
ner
• When driving through steam or smoke
• When driving near an object that reflects radio waves, such as a large
truck or guardrail
• When driving near a TV tower, broad- casting station, electric power plant, or
other location where strong radio
waves or electrical noise may be pres- ent
■Situations in which the system may
not operate properly
●In some situations such as the follow-
ing, an object may not be detected by
the radar sensor and front camera, preventing the system from operating
properly:
• When a detectable object is
approaching your vehicle • When your vehicle or a detectable
object is wobbling
• If a detectable object makes an abrupt maneuver (such as sudden swerving,
acceleration or deceleration)
• When your vehicle approaches a detectable object rapidly
• When a detectable object is not
directly in front of your vehicle
• When a detectable object is near a
wall, fence, guardrail, manhole cover, vehicle, steel plate on the road, etc.
• When a detectable object is under a
structure • When part of a detectable object is
hidden by an object, such as large
baggage, an umbrella, or guardrail • When multiple detectable objects are
close together
• If the sun or other light is shining directly on a detectable object
• When a detectable object is a shade
of white and looks extremely bright • When a detectable object appears to
be nearly the same color or brightness
as its surroundings • If a detectable object cuts or suddenly
emerges in front of your vehicle
• When the front of your vehicle is hit by water, snow, dust, etc.
• When a very bright light ahead, such
as the sun or the headlights of oncom- ing traffic, shines directly into the front
camera
• When approaching the side or front of a vehicle ahead
• If a vehicle ahead is a motorcycle
• If a vehicle ahead is narrow, such as a personal mobility vehicle
• If a preceding vehicle has a small rear
end, such as an unloaded truck
• If a preceding vehicle has a low rear end, such as a low bed trailer

2084-5. Using the driving support systems
• If a vehicle ahead has extremely high
ground clearance
• If a vehicle ahead is carrying a load
which protrudes past its rear bumper • If a vehicle ahead is irregularly
shaped, such as a tractor or side car
• If a vehicle ahead is a child sized bicy- cle, a bicycle that is carrying a large
load, a bicycle ridden by more than
one person, or a uniquely shaped bicycle (bicycle with a child seat, tan-
dem bicycle, etc.)
• If a pedestrian/or the riding height of a bicyclist ahead is shorter than approx-
imately 1 m (3.2 ft.) or taller than
approximately 2 m (6.5 ft.) • If a pedestrian/bicyclist is wearing
oversized clothing (a rain coat, long
skirt, etc.), making their silhouette obscure
• If a pedestrian is bending forward or
squatting or bicyclist is bending for- ward
• If a pedestrian/bicyclist is moving fast
• If a pedestrian is pushing a stroller, wheelchair, bicycle or other vehicle
• When driving in inclement weather
such as heavy rain, fog, snow or a
sandstorm • When driving through steam or smoke
• When the surrounding area is dim,
such as at dawn or dusk, or while at night or in a tunnel, making a detecta-
ble object appear to be nearly the
same color as its surroundings
• When driving in a place where the sur- rounding brightness changes sud-
denly, such as at the entrance or exit
of a tunnel • After the engine has started the vehi-
cle has not been driven for a certain
amount of time • While making a left/right turn and for a
few seconds after making a left/right
turn • While driving on a curve and for a few
seconds after driving on a curve
• If your vehicle is skidding • If the front of the vehicle is raised or
lowered
• If the wheels are misaligned
• If a wiper blade is blocking the front
camera • The vehicle is being driven at
extremely high speeds
• When driving on a hill • If the radar sensor or front camera is
misaligned
●In some situations such as the follow-
ing, sufficient braking force may not
be obtained, prev enting the system from performing properly:
• If the braking functions cannot operate
to their full extent, such as when the brake parts are extremely cold,
extremely hot, or wet
• If the vehicle is not properly main- tained (brakes or ti res are excessively
worn, improper tire inflation pressure,
etc.)
• When the vehicle is being driven on a gravel road or other slippery surface
■If VSC is disabled
●If VSC is disabled ( P.317), the pre-collision brake assist and pre-col-
lision braking functions are also disa-