2023 TOYOTA COROLLA sensor

1764-3. Operating the lights and wipers
2Turn the headlight switch to
the or position.
When the headlight switch lever is
in the low beam position, the AHB
system will be enabled and the
AHB indicator will illuminate.
■Automatic operating condi-
tions of the high beams
●When all of the following condi-
tions are met, the high beams will
illuminate automatically:
• The vehicle speed is approxi-
mately 21 mph (34 km/h) or more.
• The area ahead of the vehicle is dark.
• There are no vehicles ahead with lights on.
• There are few streetlights or other
lights on the road ahead.
●If any of the following conditions
are met, the headlights will
change to the low beams:
• Vehicle speed drops below
approximately 17 mph (27 km/h).
• The area ahead of the vehicle is not dark.
• There is a vehi cle ahead with
lights on.
• There are many streetlights or
other lights on the road ahead.
■Front camera detection
●In the following situations, the high
beams may not be automatically
changed to the low beams:
• When a vehicle cuts in front of your vehicle
• When another vehicle crosses in front of the vehicle • When vehicles ahead are repeat-
edly detected and then hidden
due to repeated curves, road
dividers or roadside trees
• When a vehicle ahead approaches from a far lane
• When a vehicle ahead is far away
• When a vehicle ahead has no lights
• When the lights of a vehicle ahead are dim
• When a vehicle ahead is reflecting
strong light, such as own head-
lights
• Situations in which the sensors
may not operate properly: P. 1 8 8
●The headlights may change to the
low beams if a vehicle ahead that
is using fog lights without its head-
lights turned on is detected.
●House lights, street lights, traffic
signals, and illuminated billboards
or signs may cause the high
beams to change to the low
beams, or the low beams to
remain on.
●The following may change the tim-
ing at which the headlights
change to the low beams:
• The brightness o f lights of vehi-
cles ahead
• The movement and direction of vehicles ahead
• The distance between the vehicle and a vehicle ahead
• When a vehicle ahead only has
lights illuminate d on one side
• When a vehicle ahead is a two-wheeled vehicle
• The condition of the road (gradi- ent, curve, condition of the road
surface, etc.)
• The number of passengers and amount of luggage
●The headlights may change
between the high beams and low
beams unexpectedly.
●Bicycles and other small vehicles
may not be detected.
●In the following situations, the sys-
tem may not be able to correctly
detect the brightness of the sur-

1774-3. Operating the lights and wipers
4
Driving
roundings. This may cause the
low beams to remain on or the
high beams to flash or dazzle
pedestrians or vehicles ahead. In
such a case, it is necessary to
manually change between the
high beams and low beams.
• When there are lights similar to headlights or tail li ghts in the sur-
rounding area
• When headlights or tail lights of vehicles ahead are turned off,
dirty, changing color, or not aimed
properly
• When the headlights are repeat-
edly changing between the high
beams and low beams.
• When use of the high beams is
inappropriate or when the high
beams may be flashing or daz-
zling pedestrians or other drivers.
• When the vehicle is used in an area in which vehicles travel on
the opposite side of the road of
the country for wh ich the vehicle
was designed, for example using
a vehicle designed for right-hand
traffic in a left-hand traffic area, or
vice versa
• When it is necessary to disable
the system:  P. 1 8 4
• Situations in which the sensors may not operate properly: P. 1 8 8
■Temporarily reducing front
camera sensitivity (for the
U.S.A.)
The sensitivity o f the front camera
can be temporarily reduced.
1 Turn the engine switch off with
the following conditions met.
• The headlight switch is in the
or position.
• The headlight switch lever is in the low beam position.
• The automatic High Beam switch is on.
2 Press the engine switch to ON.
3 Within 60 seconds after perform-
ing step 2, push the headlight
switch lever to the high beam
position then pull it to the original position quickly 10 times, then
leave the lever in its original posi-
tion.
■Changing to the high
beams
Push the lever forward.
The Automatic High Beam indicator
will turn off and the high beam indi-
cator will turn on.
Pull the lever to its original position
to enable the Automatic High Beam
system again.
■Changing to the low beams
Press the Automatic High Beam
switch.
The Automatic High Beam indicator
will turn off.
Press the switch to enable the
Automatic High Beam system
again.
Turning the high beams
on/off manually

1854-5. Using the driving support systems
4
Driving
■PCS (Pre-Collision System)
 P.190
■LTA (Lane Tracing Assist)
 P.201
■LDA (Lane Departure Alert)
 P.206
■AHB (Automatic High
Beam)
 P.175
■PDA (Proactive driving
assist)
 P. 2 1 1
■RSA (Road Sign Assist)*
P.217
*: If equipped
■Dynamic radar cruise con-
trol
 P.219
■Cruise control
 P.227
■Emergency Driving Stop
System
 P.230
Various sensors are used to
obtain the necessary informa-
tion for system operation.
■Sensors which detect the
surrounding conditions
Front radar sensor
Front camera
WARNING
●When a sensor is misaligned or
deformed due to a strong
impact being applied to the sen-
sor or the area around the sen-
sor
●When accessories which
obstruct a sensor or light are
temporarily installed to the vehi-
cle
●When a compact spare tire or
tire chains are installed to the
vehicle or an emergency tire
puncture repair kit has been
used
●When the tires are excessively
worn or the inflation pressure of
the tires is low
●When tires other than the manu-
facturer specified size are
installed
●When the vehicle cannot be
driven stably, due to a collision,
malfunction, etc.
Driving assist system
Sensors used by Toyota
Safety Sense 3.0

1864-5. Using the driving support systems
WARNING
■To prevent malfunction of the
radar sensors
Observe the following precau-
tions. Failure to do so may lead to
a radar sensor not operating prop-
erly, possibly leading to an acci-
dent resulting in death or serious
injury.
●Keep the radar sensors and
radar sensor covers clean at all
times.
Clean the front of a radar sensor
or the front or back of a radar sen-
sor cover if it is dirty or covered
with water drople ts, snow, etc.
When cleaning the radar sensor
and radar sensor cover, use a soft
cloth to remove di rt so as to not
damage them.
Type A
Type B
Radar sensor
Radar sensor cover
●Do not attach a ccessories,
stickers (including transparent
stickers), aluminum tape, etc. to
a radar sensor or radar sensor
cover and their surrounding
area.
●Do not subject a radar sensor or
its surrounding area to impact.
If a radar sensor, the front grille,
or front bumper has been sub-
jected to a imp act, have the
vehicle inspected by your Toy-
ota dealer.
●Do not disassemble the radar
sensors.
●Do not modify or paint the radar
sensors or radar sensor cover,
or replace them with anything
other than Toyota genuine parts.
●In the following situations, recal-
ibration of the radar sensors will
be necessary. For details, con-
tact your Toyota dealer.
• When a radar sensor is removed and installed, or
replaced
• When the front bumper or the front grille has been replaced
■To prevent malfunction of the
front camera
Observe the following precau-
tions.
Failure to do so may lead to the
front camera not operating prop-
erly, possibly leading to an acci-
dent resulting in death or serious
injury.
●Always keep the windshield
clean.
• If the windshield is dirty or cov-
ered with an o ily film, water
droplets, snow, etc., clean the
windshield.

1884-5. Using the driving support systems
■Situations in which the sensors
may not operate properly
●When the height or inclination of
the vehicle has been changed due
to modifications
●When the windshield is dirty,
fogged up, cracked or damaged
●When the ambient temperature is
high or low
●When mud, water, snow, dead
insects, foreign matter, etc., is
attached to the front of the sensor
●When in inclement weather such
as heavy rain, fog, snow, or a
sandstorm
●When water, snow, dust, etc. is
thrown up in front of the vehicle, or
when driving through mist or
smoke
●When the headlig hts are not illu-
minated while driving in the dark,
such as at night o r when in a tun-
nel
●When the lens of a headlight is
dirty and illumination is weak
●When the headlights are mis-
aligned
●When a headlight is malfunction-
ing
●When the headlights of another
vehicle, sunlight, or reflected light
shines directly into the front cam-
era
●When the brightness of the sur-
rounding area changes suddenly
●When driving near a TV tower,
broadcasting station, electric
power plant, radar equipped vehi-
cles, etc., or other location where
strong radio waves or electrical
noise may be present
●When a wiper blade is blocking
the front camera
●When in a location or near objects
which strongly reflect radio waves,
such as the following:
• Tunnels
• Truss bridges
• Gravel roads
• Rutted, snow-covered roads
• Walls
• Large trucks
• Manhole covers
• Guardrail
• Metal plates
●When near a step or protrusion
●When a detectable vehicle is nar-
row, such as a small mobility vehi-
cle
●When a detectable vehicle has a
small front or rear end, such as an
unloaded truck
●When a detectable vehicle has a
low front or rear end, such as a
low bed trailer
●When a detectable vehicle has
extremely high ground clearance
WARNING
■Front camera installation area
on the windshield
If the system determines that the
windshield may be fogged up, it
will automatically operate the
heater to defog the part of the
windshield around the front cam-
era. When cleaning, etc., be care-
ful not to touch the area around
the front camera until the wind-
shield has cooled sufficiently, as
touching it may cause burns.

1904-5. Using the driving support systems
be heard and the brake pedal
response may change, but this
does not indicate a malfunction.
●When the system is operating, the
brake pedal may feel stiffer than
expected or sink. In either situa-
tion the brake pedal can be
depressed further. Further
depress the brake pedal as nec-
essary.
PCS (Pre-Collision Sys-
tem)
The pre-collision system
uses sensors to detect
objects ( P.191) in the path
of the vehicle. When the
system determines that the
possibility of a frontal colli-
sion with a detectable
object is high, a warning
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 system determines that
the possibility of a collision
is extremely high, the
brakes are automatically
applied to help avoid the
collision or help reduce the
impact of the collision.
The pre-collision system
can be disabled/enabled
and the warning timing can
be changed. ( P.200)

2044-5. Using the driving support systems
The LTA will change between
enabled/disabled each time the
LTA switch is pressed.
When the LTA is enabled, the LTA
indicator will illuminate.
Enabling/disabling the
system
WARNING
■Situations in which the func-
tions may not operate prop-
erly
In the following situations, the
functions may not operate prop-
erly and the vehicle may depart
from its lane. Do not overly rely on
these functions. The driver is
solely responsible for paying
attention to their surroundings
and operating the steering wheel
as necessary to ensure safety.
●When a preceding or surround-
ing vehicle changes lanes (Your
vehicle may follow the preced-
ing or surrounding vehicle and
also change lanes)
●When a preceding or surround-
ing vehicle is swaying (Your
vehicle may sway accordingly
and depart from the lane)
●When a preceding or surround-
ing vehicle departs from a lane
(Your vehicle may follow the
preceding or surrounding vehi-
cle and also depart from the
lane)
●When a preceding or surround-
ing vehicle is being driven
extremely close to the left/right
lane line (Your vehicle may fol-
low the preceding or surround-
ing vehicle accordingly and
depart from the lane)
●When there are moving objects
or structures in the surrounding
area (Depending on the position
of the moving object or structure
relative to your vehicle, your
vehicle may sway)
●When the vehicle is struck by a
crosswind or the turbulence of
other nearby vehicles
●Situations in which the sensors
may not operate properly:
 P.188
●Situations in which the lane may
not be detected:  P.189
●When it is necessary to disable
the system: P.184

2094-5. Using the driving support systems
4
Driving
●When the system determines that
the driver is not securely holding
the steering wheel, or the steering
wheel is not being operated when
the steering assist operation of the
lane departure prevention function
is operating
The length of time that the warning
buzzer operates will become longer
as the frequency o f the steering
assist operating i ncreases. Even if
the system judges that the steering
wheel has been operated, the warn-
ing buzzer will sound for a certain
amount of time.
■Break suggestion function
If the vehicle is swaying, a message
will be displayed and a warning
buzzer will sound to u rge the driver
to take a break.
Depending on the condition of the
vehicle and road surface, the break
suggestion functi on may not oper-
ate.
 The LDA system can be
enabled/disabled through a
customize setting. ( P.412)
 The settings of the LDA can
be changed on the customize
settings. ( P.412)
Changing LDA settings
WARNING
■Situations in which the sys-
tem may not ope rate properly
In the following situations, the
system may not operate properly
and the vehicle may depart from
its lane. Do not overly rely on
these functions. The driver is
solely responsible for paying
attention to their surroundings
and operating the steering wheel
as necessary to ensure safety.
●When the boundary between
the asphalt and grass, soil, etc.,
or structures, such as a curb,
guardrail, etc. is not clear or
straight
●When the vehicle is struck by a
crosswind or the turbulence of
other nearby vehicles
●Situations in which the lane may
not be detected:  P.189
●Situations in which the sensors
may not operate properly:
P.188
●Situations in which some or all
of the functions of the system
cannot operate: P.189
●When it is necessary to disable
the system: P.184