2023 TOYOTA COROLLA Owners Manual

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.

1874-5. Using the driving support systems
4
Driving
WARNING

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.

1894-5. Using the driving support systems
4
Driving
●When a detectable vehicle is car-
rying a load which protrudes from
its cargo area
●When a detectable vehicle has lit-
tle exposed metal, such as a vehi-
cle which is parti ally covered with
cloth, etc.
●When a detectabl e vehicle is
irregularly shaped , such as a trac-
tor, sidecar, etc.
●When the distance between the
vehicle and a detectable vehicle
has become extremely short
●When a detectable vehicle is at an
angle
●When snow, mud, etc. is attached
to a detectable vehicle
●When driving on the following
kinds of roads:
• Roads with sharp curves or wind- ing roads
• Roads with chang es in grade,
such as sudden inclines or
declines
• Roads which is slo ped to the left
or right
• Roads with deep ruts
• Roads which are rough and
unmaintained
• Roads which frequently undulate
or are bumpy
●When the steering wheel is being
operated frequently or suddenly
●When the vehicle is not in a con-
stant position within a lane
●When parts related to this system,
the brakes, etc. are cold or
extremely hot, wet, etc.
●When the wheels are misaligned
●When driving on slick road sur- faces, such as when it is covered
with ice, snow, gravel, etc.
●When the course of the vehicle
differs from the
shape of a curve
●When the vehicle speed is exces-
sively high when entering a curve
●When entering/exiting a parking
lot, garage, car elevator, etc.
●When driving in a parking lot
●When driving through an area
where there are obstructions
which may contact your vehicle,
such as tall grass , tree branches,
a curtain, etc.
●When driving in strong wind
■Situations in which the lane
may not be detected
●When the lane is extremely wide
or narrow
●Immediately after changing lanes
or passing through an intersection
●When driving in a temporary lane
or lane regulated by construction
●When there are s tructures, pat-
terns, shadows which are similar
to lane lines in the surrounding
●When the lane lines are not clear
or driving on a wet road surface
●When a lane line is on a curb
●When driving on a bright, reflec-
tive road surface, such as con-
crete
■Situations in which some or all
of the functions of the system
cannot operate
●When a malfunction is detected in
this system or a related system,
such as the brakes, steering, etc.
●When the VSC, TRAC, or other
safety related system is operating
●When the VSC, TRAC, or other
safety related system is off
■Changes in brake operation
sound and pedal response
●When the brakes have been oper-
ated, brake operation sounds may

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)

1914-5. Using the driving support systems
4
Driving
The system can detect the fol-
lowing as detectable objects.
(Detectable objects differ
depending on the function.)
Vehicles
 Bicycles
*
Pedestrians
 Motorcycles
*
*: Detected as a detectable object
only when being ridden.
■Pre-collision warning
When the system determines
that the possibility of a collision
is high, a buzzer will sound and
an icon and warning message
will be displayed on the
multi-information display to urge
the driver to take evasive action.
If the detectable object is a vehi-
cle, moderate braking will be
performed with the warning.
If the system determines that
the accelerator pedal is strongly
depressed, the following icon
and message will be displayed
on the multi-information display.
WARNING
■For safe use
●Driving safely is solely the
responsibility of the driver. Pay
careful attention to the sur-
rounding conditions in order to
ensure safe driving.
Never use the pre-collision sys-
tem in place of normal braking
operations. This system cannot
help avoid or reduce the impact
of a collision in every situation.
Over-reliance on this system to
drive the vehicle safely may
lead to an accident resulting in
death or serious injury.
●Although the pr e-collision sys-
tem is designed to help avoid or
help reduce the im pact of a col-
lision, its effectiveness may
change according to various
conditions. Therefore, it may not
always be able to achieve the
same level of performance.
Read the followi ng items care-
fully. Do not overl y rely on this
system and always drive care-
fully.
●For safe use: P.184
■When to disable the pre-colli-
sion system
●When it is necessary to disable
the system: P. 1 8 4
Detectable objects
System functions

1924-5. Using the driving support systems
■Pre-collision brake assist
If the system determines that
the possibility of a collision is
high and the brake operation by
the driver is insufficient, the
braking power will be increased.
■Pre-collision brake control
If the system determines that
the possibility of a collision is
extremely high, the brakes are
automatically applied to help
avoid the collision or reduce the
impact of the collision.
■Emergency steering assist
If the system determines that
the following conditions are met,
assistance will be provided to
help enhance vehicle stability
and prevent lane departure.
During assistance, in addition to
the pre-collision warning, the fol-
lowing icon will be displayed on
the multi-information display.
 The possibility of a collision is
high
 There is sufficient space
within the lane to perform
evasive steering maneuvers
 The driver is operating the
steering wheel
During assistance, the pre-colli-
sion warning will operate and a
message will be displayed to
warn the driver.
■Intersection collision avoid-
ance support (left/right
turn)
In situations such as the follow-
ing, if the system determines
that the possibility of a collision
is high, the pre-collision warning
and pre-collision braking will
operate.
Depending on the intersection,
assistance may not operate cor-
rectly.
 When turning left/right at an
intersection and crossing the
path of an oncoming vehicle
 When turning left/right and an
oncoming pedestrian or bicy-
cle is detected