brake sensor TOYOTA SEQUOIA 2021 Owners Manual (in English)

2294-3. Operating the lights and wipers
4
Driving
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■Daytime running light system
●The daytime running lights illuminate using the same lights as the parking
lights and illuminate brighter than the parking lights.
● To make your vehicle more visible to other drivers during dayti me driving,
the daytime running lights turn on automatically when all of the following
conditions are met. (The daytime running lights are not designe d for use at
night.)
• The engine is running
• The parking brake is released
• The headlight switch is in the (Canada only), or
* posi-
tion
*: When the surroundings are bright
The daytime running lights remain on after they illuminate, eve n if the park-
ing brake is set again.
● For the U.S.A.: Daytime running lights can be turned off by ope rating the
switch.
● Compared to turning on the headlights, the daytime running ligh t system
offers greater durability and consumes less electricity, so it can help improve
fuel economy.
■ Headlight control sensor
The sensor may not function properly if an
object is placed on the sensor, or anything
that blocks the sensor is affixed to the
windshield.
Doing so interferes with the sensor
detecting the level of ambient light and
may cause the automatic headlight sys-
tem to malfunction.

2554-5. Using the driving support systems
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Driving
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PCS (Pre-Collision System)
The pre-collision system uses a radar sensor and front camera
to detect vehicles and pedestrians in front of your vehicle. When
the system determines that the possibility of a frontal collisi on
with a vehicle or pedestrian i s high, a warning operates to urg e
the driver to take evasive action and the potential brake pres-
sure is increased to help the driver avoid the collision. If the sys-
tem determines that the possibi lity of a frontal collision with a
vehicle or pedestrian is extremely high, the brakes are automat i-
cally applied to hel p avoid the collision or help reduce the
impact of the collision.
The pre-collision system can b e disabled/enabled and the warnin g
timing can be changed. ( P. 2 5 9 )

2674-5. Using the driving support systems
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Driving
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In some situations such as the following, sufficient braking fo rce may not be
obtained, preventing 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 maintained (brakes or tires are excessively
worn, improper tire inflation pressure, etc.)
• When the vehicle is being driven on a gravel road or other sli ppery sur-
face
● Some pedestrians such as the following may not be detected by t he radar
sensor and front camera, preventing the system from operating p roperly:
• Pedestrians shorter than approximately 3.2 ft. (1 m) or taller than approx-
imately 6.5 ft. (2 m)
• Pedestrians wearing oversized clothing (a rain coat, long skir t, etc.), mak-
ing their silhouette obscure
• Pedestrians who are carrying large baggage, holding an umbrella, etc., hiding part of their body
• Pedestrians who are bending forward or squatting
• Pedestrians who are pushing a stroller, wheelchair, bicycle or other vehi-
cle
• Groups of pedestrians which are close together
• Pedestrians who are wearing white and look extremely bright
• Pedestrians in the dark, such as at night or while in a tunnel
• Pedestrians whose clothing appears to be nearly the same color or
brightness as their surroundings
• Pedestrians near walls, fences, guardrails, or large objects
• Pedestrians who are on a metal object (manhole cover, steel plate, etc.)
on the road
• Pedestrians who are walking fast
• Pedestrians who are changing speed abruptly
• Pedestrians running out from behind a vehicle or a large objec t
• Pedestrians who are extremely close to the side of the vehicle (outside
rear view mirror, etc.)
■ If VSC is disabled
●If VSC is disabled ( P. 324), the pre-collision brake assist and pre-collision
braking functions are also disabled.
● The PCS warning light will turn on and “VSC Turned Off Pre-Coll ision Brake
System Unavailable” will be displayed on the multi-information display.

2874-5. Using the driving support systems
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Driving
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Automatic cancelation of c onstant speed control mode
Constant speed control mode is automatically canceled in the following situa-
tions:
● Actual vehicle speed is more than approximately 10 mph (16 km/h ) below
the set vehicle speed.
● Actual vehicle speed falls below approximately 25 mph (40 km/h) .
● VSC is activated.
● TRAC is activated for a period of time.
● When the VSC or TRAC system is turned off.
● Pre-collision braking is activated.
● The operation cannot be switched for 5 seconds or more after operating the
four-wheel drive control or the center differential lock switch . (4WD models)
If constant speed control mode is automatically canceled for an y other rea-
son, there may be a malfunction in the system. Contact your Toyota dealer.
■ Brake system operation sound
If the brakes are applied automatically while the vehicle is in vehicle-to-vehi-
cle distance control mode, a brake system operation sound may b e heard.
This does not indicate a malfunction.
■ Warning messages and buzzers for d ynamic radar cruise control
Warning messages and buzzers are used to indicate a system malfunction or
to inform the driver of the need for caution while driving. If a warning message
is shown on the multi-information display, read the message and follow the
instructions.
■ When the sensor may not be correctly detect ing the vehicle ahead
In the case of the following and depending on the conditions, o perate the
brake pedal when deceleration of the system is insufficient or operate the
accelerator pedal when acceleration is required.
As the sensor may not be able to correctly detect these types o f vehicles, the
approach warning ( P. 284) may not be activated.
● Vehicles that cut in suddenly
● Vehicles traveling at low speeds
● Vehicles that are not moving in the same lane

2894-5. Using the driving support systems
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Driving
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Conditions under which the vehic le-to-vehicle distance control mode
may not function correctly
In the case of the following conditions, operate the brake peda l (or accelera-
tor pedal, depending on the situation) as necessary.
As the sensor may not be able to correctly detect vehicles ahead, the system
may not operate properly.
● When the vehicle ahead of you decelerates suddenly
● When driving on a road surrounded by a structure, such as in a tunnel or on
a bridge
● While the vehicle speed is decreasing to the set speed after th e vehicle
accelerates by depressing the accelerator pedal
●
When the road curves or when the lanes
are narrow
● When steering wheel operation or your
position in the lane is unstable

2934-5. Using the driving support systems
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Driving
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Limitations of the sensors
●The detection areas of the sensors are limited to the areas aro und the vehi-
cle’s front corners and the rear bumpers.
● Certain vehicle conditions and surrounding environments, such a s the fol-
lowing, may affect the ability of the sensors to correctly dete ct objects. Pay
particular attention in the following situations. Failure to do so may result in
the vehicle being driven unsafely, possibly leading to an accident.
• When there is dirt, snow or ice on a sensor (Cleaning the sens or will
resolve this problem.)
• When the sensor is frozen (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is frozen the screen ma y show an
abnormal display, or objects may not be detected
• When a sensor is covered in any way
• When the vehicle is leaning considerably to one side
• When driving on an extremely bumpy road, incline, gravel, or g rass
• When the vicinity of the vehicle is noisy due to vehicle horns , motorcycle
engines, air brakes of large vehicles, or other loud noises pro ducing ultra-
sonic waves
• When there is another vehicle equipped with parking assist sen sor in the
vicinity
• When the sensor is coated with a sheet of spray or heavy rain
• When the vehicle is equipped with a fender pole or wireless an tenna
• When a towing eyelet is installed
• When a bumper or sensor receives a strong impact
• A backlit license plate, license plate holder, etc., are insta lled.
• When the vehicle is approaching a tall or curved curb
• When driving in harsh sunlight or intense cold weather
• When an object is directly under a bumper
• When objects become too close to the sensors
• When a non-genuine Toyota suspension (lowered suspension, etc. ) is
installed
In addition to the situations above, there are instances in which, because of
their shape, signs and other objects may be judged by the senso r to be
closer than they are.

2954-5. Using the driving support systems
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Driving
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WARNING
■When using the intuitive parking assist
Observe the following precautions.
Failure to do so may result in the vehicle being unable to be d riven safely
and possibly cause an accident.
● Do not use the sensor at speeds in excess of 6 mph (10 km/h).
● The sensors’ detection areas and reaction times are limited. When moving
forward or reversing, check the areas surrounding the vehicle ( especially
the sides of the vehicle) for safety, and drive slowly, using t he brake to
control the vehicle’s speed.
● Do not install accessories within the sensors’ detection areas.
NOTICE
■When using intuitive parking assist-sensor
In the following situations, the system may not function correctly due to a
sensor malfunction, etc. Have the vehicle checked by your Toyot a dealer.
● The intuitive parking assist operation display flashes, and a beep sounds
when no obstacles are detected.
● If the area around a sensor collides with something, or is subjected to
strong impact.
● If the bumper collides with something.
● If the display shows continuously without a beep.
● If a display error occurs, first check the sensor.
If the error occurs even if there is no ice, snow or mud on the sensor, it is
likely that the sensor is malfunctioning.
■ Notes when washing the vehicle
Do not apply intensive bursts of water or steam to the sensor a rea.
Doing so may result in the sensor malfunctioning.

4807-2. Steps to take in an emergency
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Indicates a malfunction in the rear height control
air suspension (if equipped)The malfunctioning assist-sensor is flashing.
 Immediately stop the vehicle in a safe place
and contact your Toyota dealer
Indicates a malfunction in the SRS airbag system
A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer immediately.
Indicates a malfunction in the automatic transmis-
sion system
A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer immediately.
Indicates a malfunction in the Brake Override
system
A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer immediately.
Indicates a malfunction in the Drive-start control
A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer immediately.
Indicates a malfunction in the cruise control sys-
tem
• Press the “ON-OFF” button once to deacti-vate the system, and then press the button
again to reactivate the system.
• A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer immediately.
Warning messageDetails/Actions
AIR SUSPENSION
System Malfunction
Visit Your Dealer
SRS Airbag System Malfunction
Visit Your Dealer
CHECK
TRANSMISSION SYSTEM
Brake Override Malfunction
Visit Your Dealer
Drive-Start Control
Malfunction
Visit Your Dealer
Cruise Control Malfunction
Visit Your Dealer

4827-2. Steps to take in an emergency
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Indicates that the RCTA (Rear Cross Traffic Alert)
sensors or the surrounding area on the bumper is
dirty or covered with iceA buzzer also sounds.
 Clean the sensor and its surrounding area
on the bumper.
Indicates that the engine was stopped with the
shift lever not in P. A buzzer also sounds.
 Shift the shift lever to P.
Indicates that the engine was stopped while driv-
ing.
A buzzer also sounds.
 Stop the vehicle in a safe place such as the
shoulder of a road.
Indicates that one or more of the doors or the
hood is not fully closed
The system also indicates which doors are not
fully closed. If the vehicle reaches a speed of
3 mph (5 km/h), flashes and a buzzer
sounds to indicate that the door(s) are not yet
fully closed.
 Make sure that all the doors and the hood
are closed.
Indicates that the parking brake is still engaged
If the vehicle reaches a speed of 3 mph (5 km/h),
flashes and a buzzer sounds to indicate
that the parking br ake is still engaged.
Release the parking brake.
Indicates that the accelerator and brake pedals
are being depressed simultaneously, and the
Brake Override System is operating. ( P. 177)
 Release the accelerator pedal and depress
the brake pedal.
Warning messageDetails/Actions
Rear Cross Traffic Alert
Unavailable
Engine Stopped Shift Into P
(Flashes)
Engine Stopped
Stop in a Safe Place
(Flashes)
(Flashes)
Release
Parking Brake
(Flashes)
Accelerator and
Brake Pedals Pressed
Simultaneously

4837-2. Steps to take in an emergency
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When trouble arises
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Indicates the following:• The brake fluid level is low; or
• The brake system is malfunctioning.
 Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
Indicates remaining fuel is approximately 4.0 gal.
(15.0 L, 3.3 Imp.gal.) or less
A buzzer also sounds.
 Refuel the vehicle.
Indicates that the tire inflation pressure is low
Check the tire inflation pressure, and
adjust to the appropriate level.
Indicates that the washer fluid level is low
 Add washer fluid.
Indicates that intuitive parking assist sensor is
dirty or covered with ice (if equipped)
Clean the sensor.
Indicates that the headlight switch is in or
position (with the key removed and the
driver’s door opened) A buzzer also sounds.
 Turn the lights off.
Indicates that the moon roof is not fully closed
(with the engine switch off, and the driver’s door
open)
A buzzer also sounds.
 Close the moon roof.
Indicates that all maintenance according to the
driven distance on the maintenance schedule
*
should be performed soon.
Comes on approximately 4500 miles (7200 km)
after the message has been reset.
If necessary, perfo rm maintenance.
Warning messageDetails/Actions
Check Brake System
Fuel Low
Tire Pressure Low
Check Tire
Windshield
Washer Fluid Low
Clean Parking Assist Sensor
Turn Lights Off
(Flashes)
Moon Roof Open
(Flashes)
Maintenance
Required Soon