sensor TOYOTA COROLLA 2021 (in English) User Guide

1914-3. Operating the lights and wipers
4
Driving
COROLLA_U
■Temporarily lowering sensor
sensitivity
The sensitivity of the sensor can be
temporarily lowered.
1 Turn the engine s witch off while
the following cond itions are met.
●The headlight switch is in or
.
●The headlight switch lever is in
high beam position.
●Automatic High Beam switch is
on.
2 Turn the engine switch to ON.
3 Within 60 seconds after step 2,
repeat pulling the headlight
switch lever to the original posi-
tion then pushing it to the high
beam position qu ickly 10 times,
then leave the lever in high beam
position.
4 If the sensitivity is changed, the
Automatic High Beam indicator
is turn on and off 3 times.
Automatic High Beam (headlights)
may turn on even w hen the vehicle
is stopped.
■Switching to the low beams
Pull the lever to its original posi-
tion.
The Automatic High Beam indicator
will turn off.
Push the lever away from you to
activate the Automatic High Beam
system again.
■Switching to the high
beams
Press the Automatic High Beam
switch.
The Automatic High Beam indicator
will turn off and the high beam indi-
cator will turn on.
Press the switch to activate the
Automatic High Beam system
again.
Turning the high beams
on/off manually

1964-5. Using the driving support systems
COROLLA_U
4-5.Using the driving support systems
■PCS (Pre-Collision System)
 P. 2 0 3
■LTA (Lane Tracing Assist)*
P. 2 1 1
*: If equipped
■LDA (Lane Departure Alert
with steering control)
*
P. 2 2 1
*: If equipped
■AHB (Automatic High
Beam)
 P. 1 8 9
■RSA (Road Sign Assist)*
P. 2 5 0
*: If equipped
■Dynamic radar cruise con-
trol with full-speed range
*
P. 2 2 9
*: If equipped
■Dynamic radar cruise con-
trol
*
P. 2 4 0
*: If equipped
Two types of sensors, located
behind the front grille and wind-
shield, detect information neces-
sary to operate the drive assist
systems.
Radar sensor
Front camera
Toyota Safety Sense
2.0
The Toyota Safety Sense 2.0
consists of the following
drive assist systems and
contributes to a safe and
comfortable driving experi-
ence:
Driving assist system
WA R N I N G
■Toyota Safety Sense 2.0
The Toyota Safety Sense 2.0 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 condi-
tions.
As there is a limit to the degree of
recognition accuracy and control
performance that this system can
provide, do not overly rely on this
system. The driver is always
responsible for paying attention to
the vehicle’s su rroundings and
driving safely.
Sensors

1974-5. Using the driving support systems
4
Driving
COROLLA_U
WA R N I N G
■To avoid malfunction of the
radar sensor
Observe the following precau-
tions.
Otherwise, the radar sensor may
not operate properly, possibly
leading to an accident resulting in
death or serious injury.
●Keep the radar sensor and the
radar sensor cover clean at all
times.
1.8 L 4-cylinder (2ZR-FAE)
engine
Radar sensor
Radar sensor cover
If the front of the r adar sensor or
the front or back of the radar sen-
sor 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.
2.0 L 4-cylinder (M20A-FKS)
engine
Radar sensor
Radar sensor cover
If the front of the radar sensor or
the front or back of the radar sen-
sor 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 a ccessories,
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 surroundi ng area to a
strong impact.
If the radar sens or, front grille,
or front bumper has been sub-
jected to a strong impact, have
the vehicle inspected by your
Toyota dealer.
●Do not disassemble the radar
sensor.
●Do not modify or paint the radar
sensor or radar sensor cover.
●In the following cases, the radar
sensor must be recalibrated.
Contact your Toyota dealer for
details.
• When the radar s ensor or front
grille are removed and installed,
or replaced

2014-5. Using the driving support systems
4
Driving
COROLLA_U
■If a warning message is displayed on the multi-information display
A system may be tempor arily unavailable or there may be a malfu nction in
the system.
●In the following situations, perform the actions specified in t he table. When
the normal operating conditions are detected, the message will disappear
and the system will be come operational.
If the message does not disapp ear, contact your Toyota dealer.
SituationActions
When the area around a sensor is
covered with dirt, moisture (fogged
up, covered with condensation, ice,
etc.), or other foreign matterTo clean the part of the windshield in
front of the front camera, use the
windshield wipers or the windshield
defogger of the air conditioning sys-
tem ( P.417, 422).

2024-5. Using the driving support systems
COROLLA_U
●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 message will disappear and the system will become opera-
tional.
If the message does not disapp ear, contact your Toyota dealer.
• When the temperature around the radar sensor is outside of the opera-
tional range, such as when the vehicle is in the sun or in an e xtremely cold
environment
• When the front camera cannot d etect objects in front of the vehicle, such
as when driving in the dark, sno w, or fog, or when bright lights are shining
into the front camera
When the temperature around the
front camera is out side of the opera-
tional range, such as when the vehi-
cle 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 conditioning sys-
tem to decrease the temperature
around the front camera.
If a sunshade was used when the
vehicle was parked, depending on its
type, the sunlight r eflected from the
surface of the sunshade may cause
the temperature of the front camera
to become exce ssively high.
If the front camera is cold, such after
the vehicle is parked in an extremely
cold environment, use the air condi-
tioning system to increase the tem-
perature 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 camera.
Close the hood, remove the sticker,
etc. to clear the obstruction.
SituationActions

2034-5. Using the driving support systems
4
Driving
COROLLA_U
The system can detect the fol-
lowing:
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 message
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 colli-
sion is extremely high, the
brakes are automatically applied
to help avoid the collision or
reduce the impact of the colli-
sion.
PCS (Pre-Collision Sys-
tem)
The pre-collision system
uses a radar sensor and
front camera to detect
objects ( P.206) in front of
the vehicle. When the sys-
tem determines that the
possibility of a frontal colli-
sion with an 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 possi-
bility of a frontal collision
with an object is extremely
high, the brakes are auto-
matically applied to help
avoid the collision or help
reduce the impact of the col-
lision.
The pre-collision system
can be disabled/enabled
and the warning timing can
be changed. ( P.205)
Detectable objects
System functions

2084-5. Using the driving support systems
COROLLA_U• When there are patterns or paint
in front of your vehicle that may be
mistaken for a detectable object
• When the front of your vehicle is hit by water, snow, dust, etc.
• When overtaking a detectable
object that is ch anging lanes or
making a right/left turn
• When passing a detectable object in an oncoming lane that is
stopped to make a right/left turn
• When a detectable object approaches very close and then
stops before entering the path of
your vehicle
• If the front of your vehicle is raised
or lowered, such as when on an
uneven or undulating road surface
• When driving on a road sur-
rounded by a structure, such as in
a tunnel or on an iron bridge
• When there is a metal object
(manhole cover, steel plate, etc.),
steps, or a protrusion in front of
your vehicle
• 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 banner
• 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, broadcasting station, electric
power plant, or other location
where strong radio waves or elec-
trical noise may be present
■Situations in which the system
may not operate properly
●In some situations such as the fol-
lowing, an object may not be
detected by the radar sensor and
front camera, pre venting the sys-
tem from opera ting 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

2104-5. Using the driving support systems
COROLLA_U• 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 t unnel, making a
detectable object appear to be
nearly the same color as its sur-
roundings
• When driving in a place where the
surrounding brightness changes
suddenly, such as at the entrance
or exit of a tunnel
• After the engine has started the vehicle 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 fol-
lowing, sufficient braking force
may not be obtained, preventing
the system from performing prop-
erly:
• 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 tires are exces- sively worn, imprope
r 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.273), the
pre-collision br ake assist and
pre-collision brakin g functions are
also disabled.
●The PCS warning light will turn on
and “VSC Turned OFF Pre-Colli-
sion Brake System Unavailable”
will be displayed on the
multi-information display.

2204-5. Using the driving support systems
COROLLA_U
■Hands off steering wheel warn-
ing
In the following situations, a warning
message urging the driver to hold
the steering wheel and the symbol
shown in the illustration are dis-
played on the multi-information dis-
play to warn the driver. The warning
stops when the sys tem determines
that the driver holds the steering
wheel. Always keep your hands on
the steering wheel when using this
system, regardless of warnings.
●When the system determines that
the driver is driving without hold-
ing the steering wheel while the
system is operating
If the driver continues to keep their
hands off of the steering wheel, the
buzzer sounds, the driver is warned
and the function is temporarily can-
celed. This warning also operates in
the same way when the driver con-
tinuously operates the steering
wheel only a small amount.
●When the system determines that
the vehicle may not turn and
instead depart from its lane while
driving around a curve
Depending on the vehicle condition
and road conditions, the warning
may not operate. Also, if the system
determines that the vehicle is driv-
ing around a curv e, warnings will
occur earlier than during
straight-lane driving.
●When the system determines that
the driver is driving without hold-
ing the steering wheel while the
steering wheel assist of the steer-
ing assist function is operating. If the driver continues to keep their
hands off of the steering wheel and
the steering wheel assist is operat-
ing, the buzzer sounds and the
driver is warned. Each time the
buzzer sounds, the continuing time
of the buzzer becomes longer.
■Vehicle sway warning function
When the system determines that
the vehicle is swaying while the
vehicle sway warning function is
operating, a buzzer sounds and a
warning message urging the driver
to rest and the sym bol shown in the
illustration are simultaneously dis-
played on the multi-information dis-
play.
Depending on the vehicle and road
conditions, the warning may not
operate.
■Warning message
If the following warning message is
displayed on the multi-information
display and the LTA indicator illumi-
nates in orange, follow the appropri-
ate troubleshooting procedure. Also,
if a different warning message is
displayed, follow the instructions
displayed on the screen.
●“LTA Malfunction Visit Your
Dealer”
The system may not be operating
properly. Have the vehicle inspected
by your Toyota dealer.
●“LTA Unavailable”
The system is temporarily canceled
due to a malfunction in a sensor
other than the front camera. Turn
the LTA system off, wait for a little
while, and then tu rn the LTA system
back on.

2294-5. Using the driving support systems
4
Driving
COROLLA_UThe system may not be operating
properly. Have the vehicle inspected
by your Toyota dealer.
●“LDA Unavailable”
The system is tempo rarily canceled
due to a malfuncti on in a sensor
other than the front camera. Turn
the LDA system off, wait for a little
while, and then turn the LDA system
back on.
●“LDA Unavailable at Current
Speed”
The function cannot be used as the
vehicle speed exceeds the LDA
operation range. Drive slower.
●“LDA Unavailable Below Approx.
32MPH”
The LDA system cannot be used as
the vehicle spee d is less than
approximately 32 mph (50 km/h).
Drive the vehicle at approximately
32 mph (50 km/h) or more.
■Customization
Function settings can be changed.
(  P.581)
*: If equipped
■Meter display
Multi-information display
Dynamic radar cruise
control with full-speed
range
*
In vehicle-to-vehicle dis-
tance control mode, the
vehicle automatically accel-
erates, decelerates and
stops to match the speed
changes of the preceding
vehicle even if the accelera-
tor pedal is not depressed.
In constant speed control
mode, the vehicle runs at a
fixed speed.
Use the dynamic radar
cruise control with
full-speed range on free-
ways and highways.
 Vehicle-to-vehicle distance
control mode ( P.232)
 Constant speed control
mode ( P.236)
System Components