sensor TOYOTA HIGHLANDER 2020 (in English) Workshop Manual

2864-5. Using the driving support systems
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3Select the volume and then
press .
Each time the switch is pressed,
the volume level will change
between 1, 2, and 3.
■Muting a buzzer temporarily
A mute button will be displayed
on the multi-information display
when an object is detected. To
mute the buzzer, press .
Mute will be canceled automati-
cally in the following situations: 
When the shift lever is
changed.
 When the vehicle speed
exceeds a certain speed.
 When the operating function
is temporarily canceled.
 When the operating function
is disabled manually.
 When the engine switch is
turned off.
■Operation of the RCTA function
The RCTA function uses rear side ra dar sensors to detect vehicles
approaching from the right or left at the rear of the vehicle and alerts
the driver of the presence of such vehicles by flashing the outside
rear view mirror indicators and sounding a buzzer.
Approaching vehicles
Detection areas of approaching vehicles
■RCTA icon display
When a vehicle approaching
from the right or left at the rear
of the vehicle is detected, the
following will be displayed on
the audio system screen.
 Example (Toyota parking assist monitor) (if equipped):
Vehicles are approaching
from both sides of the vehicle
RCTA function

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Driving
 Example (Panoramic view
monitor) (if equipped): Vehi- cles are approaching from
both sides of the vehicle
■RCTA function detection areas
The areas that vehicles can be detected in are outlined below.
The buzzer can alert the driver
of faster vehicles approaching
from farther away.
Example:
■The RCTA function is opera-
tional when
The RCTA function operates when
all of the followin g conditions are
met:
●The engine switch is in ON.
●The RCTA function is on.
●The shift lever is in R.
●The vehicle speed is less than
approximately 5 mph (8 km/h).
●The approaching vehicle speed is
between approximately 5 mph (8
km/h) and 18 mph (28 km/h).
■Conditions under which the
RCTA function will not detect a
vehicle
The RCTA function is not designed
to detect the following types of vehi-
cles and/or objects:
●Vehicles approaching from directly
behind
●Vehicles backing up in a parking
space next to your vehicle
●Vehicles that the sensors cannot
detect due to obstructions
Approaching
vehicle speed Approximate
alert distance
18 mph (28
km/h) (fast)65 ft. (20 m)
5 mph (8 km/h) (slow)18 ft. (5.5 m)
A

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●Guardrails, walls, signs, parked
vehicles and similar stationary
objects
*
●Small motorcycles, bicycles,
pedestrians, etc.*
●Vehicles moving away from your
vehicle
●Vehicles approaching from the
parking spaces next to your vehi-
cle
*
*
: Depending on the conditions, detection of a vehicle and/or
object may occur.
■Conditions under which the
RCTA function may not function
correctly
●The RCTA function may not detect
vehicles correctly in the following
situations:
• When a sensor is misaligned due to a strong impact to the sensor or
its surrounding area
• When mud, snow, ice, a sticker, etc. is covering a sensor or its sur-
rounding area on the rear bumper
• When driving on a road surface that is wet with standing water
during bad weather, such as
heavy rain, snow, or fog
• When multiple vehicles are
approaching with only a small gap
between each vehicle
• If a vehicle is approaching the rear
of your vehicle rapidly
• When a towing eyelet is installed to the rear of the vehicle.
• When backing up on a slope with
a sharp change in grade • When backing out of a shallow
angle parking spot
• Immediately after the RCTA func- tion is turned on
• Immediately after the engine is started with the RCTA function on
• When the sensors cannot detect a
vehicle due to obstructions
●Instances of the RCTA function
unnecessarily detecting a vehicle
and/or object may increase in the
following situations:
• When a vehicle passes by the side of your vehicle
• When the parking space faces a
street and vehicles are being
driven on the street

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Driving
• When the distance between your vehicle and metal objects, such as
a guardrail, wall, sign, or parked
vehicle, which may reflect electri-
cal waves toward the rear of the
vehicle, is short
• When a towing eyelet is installed to the rear of the vehicle
*: If equipped
■Parking Support Brake
function (static objects) (if
equipped)
Ultrasonic sensors are used to
detect static objects, such as a
wall, in the detection area when
driving at a low speed or back-
ing up. ( P.296)
PKSB (Parking Sup-
port Brake)*
The Parking Support Brake
system consists of the fol-
lowing functions that oper-
ate when driving at a low
speed or backing up, such
as when parking. When the
system determines that the
possibility of a collision
with a detected object is
high, a warning operates to
urge the driver to take eva-
sive action. If the system
determines that the possi-
bility of a collision with a
detected object is extremely
high, the brakes are auto-
matically applied to help
avoid the collision or help
reduce the impact of the col-
lision.
PKSB (Parking Support
Brake) system

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■Parking Support Brake
function (rear-crossing
vehicles) (if equipped)
Rear radar sensors are used to
detect approaching vehicles in
the detection area behind the
vehicle when backing up.
( P.302)
The Parking Support Brake can
be enabled/disabled on the
multi-information display. All of
the Parking Support Brake func-
tions (static objects and
rear-crossing vehicles) are
enabled/disabled simultane-
ously.
Use the meter control switches
to enable/disable the parking
support brake. (P.96)
1 Press or to select .
2 Press or to select
and then press .
When the Parking Support Brake is
disabled, the PKSB OFF indicator
( P.76) illuminates on the instru-
ment cluster.
To re-enable the system when it
was disabled, select on the
multi-information di splay, select
WARNING
■Limitations of the Parking
Support Brake system
Do not overly rely on the system,
as doing so may lead to an acci-
dent.
●The driver is solely responsible
for safe driving. Always drive
carefully, taking care to observe
your surroundings. The Parking
Support Brake system is
designed to provide support to
lessen the severity of collisions.
However, it may not operate in
some situations.
●The Parking Support Brake sys-
tem is not designed to stop the
vehicle completely. Additionally,
even if the system has stopped
the vehicle, it is necessary to
depress the brake pedal imme-
diately as brake control will be
canceled after approximately 2
seconds.
NOTICE
■If “PKSB Unavailable” is dis-
played on the multi-informa-
tion display and the PKSB
OFF indicator is flashing
If this message is displayed
immediately after the engine
switch is changed to ON, operate
the vehicle carefully, paying atten-
tion to your surr oundings. It may
be necessary to drive the vehicle
for a certain amount of time
before the system returns to nor-
mal. (If the system is not return to
normal after driv ing for a while,
clean the sensors and their sur-
rounding area on the bumpers.)
Enabling/Disabling the
Parking Support Brake

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Engine output restriction control begins operating
System determines that possibility of collision with detected
object is high
Engine output reduced
System determines that possibility of collision with detected
object is extremely high
Brake control begins operating
Brake control strength increased
Example: Multi-information display: “Brake!”
Example: Multi-information display: “Switch to Brake”
■If the Parking Support Brake
has operated
If the vehicle is stopped due to oper-
ation of the Parking Support Brake,
the Parking Support Brake will be
disabled and the PKSB OFF indica-
tor will illuminate. If the Parking Sup-
port Brake operates unnecessarily,
brake control can be canceled by
depressing the brake pedal or wait-
ing for approximately 2 seconds for
it to automatically be canceled.
Then, the vehicle can be operated
by depressing the accelerator pedal.
■Re-enabling the Parking Sup-
port Brake
To re-enable the Parking Support
Brake when it has been disabled
due to system operation perform
any of the following operations.
At this time, the PKSB OFF indicator
will turn off. ( P. 7 6 )
●Turn the PKSB (Parking Support
Brake) on ( P.290)
●The shift lever is in P.
●Drive with no operation targets in
the traveling direction of the vehi-
cle
●Change the traveling direction of
the vehicle
■If “PKSB Unavailable” is dis-
played on the mu lti-information
display and the PKSB OFF indi-
cator is flashing
●If this message is displayed only
when the shift lever is in any posi-
tion other than R, a sensor on the
front or rear bumper may be dirty.
Clean the sensors and their sur-
rounding area on the bumpers.
●Initialization may not have been
performed after a battery terminal
was disconnected and recon-
nected. Initialize the system.
(  P.295)
If this message co ntinues to be
displayed even afte r initialization,
have the vehicle inspected by
your Toyota dealer.
■If “Parking Assist Unavailable”
and “Parking Assist Unavail-
able Clean Parking Assist Sen-
sor” is displayed on the
multi-information display and
the PKSB OFF indicator is
flashing
●A sensor may be covered with ice,
snow, dirt, etc. Remove the ice,
snow, dirt, etc., from the sensor to
return the system to normal.
If this message is shown even
after removing dirt from the sen-
sor, or shown when the sensor
was not dirty to begin with, have
the vehicle inspected by your Toy-

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ota dealer.
●A sensor may be frozen. Once the
ice melts, the system will return to
normal.
●Water may be continuously flow-
ing over the sensor surface, such
as in a heavy rain. When the sys-
tem determines that it is normal,
the system will return to normal.
■If a battery terminal has been
disconnected and reconnected
The system needs to be initialized.
To initialize the system, drive the
vehicle straight ahead for 5 seconds
or more at a speed of approximately
22 mph (35 km/h) or more.

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*: If equipped
This function will operate in situations such as the following if an
object is detected in the traveling direction of the vehicle.
■When traveling at a low speed and the brake pedal is not
depressed, or is depressed late
Parking Suppor t Brake function (static objects)*
If the sensors detect a static object, such as a wall, in the trav-
elling direction of the vehicle and the system determines that
a collision may occur due to the vehicle suddenly moving for-
ward due to an accidental accelerator pedal operation, the
vehicle moving the unintended direction due to the wrong
shift lever position, or while parking or traveling at low
speeds, the system will operate to lessen the impact with the
detected static object and reduce the resulting damage.
Examples of function operation

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■When the accelerator pedal is depressed excessively
■When the vehicle moves in the unintended direction due to
the wrong shift lever position
 P.276
Types of sensorsWARNING
■To ensure the Parking Sup-
port Brake can operate prop-
erly
Observe the following precautions
regarding the sensors (
P.276).
Failure to do so may cause a sen-
sor to not operate properly, and
may cause an accident.
●Do not modify, disassemble or
paint the sensors.

2984-5. Using the driving support systems
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WARNING
●Do not replace a sensor with a
part other than a genuine part.
●Do not subject a sensor or its
surrounding area to a strong
impact.
●Do not damage the sensors,
and always keep them clean.
●If the area around a radar sen-
sor is subjected to an impact,
the system may not operate
properly due to a sensor mal-
function. Have the vehicle
inspected by your Toyota
dealer.
■Handling the suspension
Do not modify the suspension, as
changes to the height or inclina-
tion of the vehicle may prevent
the sensors from detecting
objects correctly or cause the sys-
tem to not operate or operate
unnecessarily.
■If the Parking Support Brake
function (static objects) oper-
ates unnecessarily, such as
at a railroad crossing
In the event that the Parking Sup-
port Brake function (static objects)
operates unnecessarily, such as
at a railroad crossing, brake con-
trol will be cancel ed after approxi-
mately 2 seconds, allowing you to
proceed forward and leave the
area, brake control can also be
canceled by depressing the brake
pedal. Depressing the accelera-
tor pedal after brake control is
canceled will allow you to proceed
forward and leave the area.
■Notes when washing the vehi-
cle
Do not apply intensive bursts of
water or steam to the sensor
area.
Doing so may result in the sensor
malfunctioning.
●When using a high pressure
washer to wash the vehicle, do
not spray the sensors directly,
as doing so may cause a sensor
to malfunction.
●When using steam to clean the
vehicle, do not direct steam too
close to the sensors as doing so
may cause a sensor to malfunc-
tion.
■When to disable the Parking
Support Brake
In the following situations, disable
the Parking Support Brake as the
system may operate even though
there is no possibility of a colli-
sion.
●When inspecting the vehicle
using a chassis roller, chassis
dynamo or free roller
●When loading the vehicle onto a
boat, truck or other transport
vessel
●If the suspension has been
modified or tires of a size other
than specified are installed
●If the front of the vehicle is
raised or lowered due to the
carried load
●When equipment that may
obstruct a sensor is installed,
such as a towing eyelet, bumper
protector (an additional trim
strip, etc.), bicycle carrier, or
snow plow
●When using an automatic car
wash