brake sensor TOYOTA RAV4 PLUG-IN HYBRID 2022 User Guide

341
5 5-5. Using the driving support systems
Driving
speed limit
Press and hold the “-SET” switch.
Dynamic Radar Cruise Control with
Road Sign Assist can be
enabled/disabled in the screen
on the multi-information display.
(P.184)
When the Dynamic Radar Cruise
Control with Road Sign Assist is
operating, while driving down a hill,
the vehicle speed may exceed the
set speed.
In this case, the displayed set vehi-
cle speed will be highlighted and a
buzzer will sound to alert the driver.
QDynamic radar cruise control with
full-speed range can be set when
OThe shift lever is in D.
OThe desired set speed can be set
when the vehicle speed is approxi-
mately 30 km/h (20 mph) or more.
(However, when the vehicle speed is
set while driving at below approxi-
mately 30 km/h [20 mph], the set
speed will be set to approximately 30 km/h [20 mph].)
QAccelerating after setting the vehi-
cle speed
The vehicle can accelerate by operating
the accelerator pedal. After accelerat-
ing, the set speed resumes. However,
during vehicle-to-vehicle distance con-
trol mode, the vehicle speed may
decrease below the set speed in order
to maintain the distance to the preced-
ing vehicle.
QWhen the vehicle stops while fol-
low-up cruising
OPressing the “+RES” switch while the
vehicle ahead stops will resume fol-
low-up cruising if the vehicle ahead
starts off within approximately 3 sec-
onds after the switch is pressed.
OIf the vehicle ahead starts off within 3
seconds after your vehicle stops, fol-
low-up cruising will be resumed.
QAutomatic cancelation of vehicle-
to-vehicle distance control mode
Vehicle-to-vehicle distance control
mode is automatically canceled in the
following situations.
OVSC is activated.
OTRC is activated for a period of time.
OWhen the VSC or TRC system is
turned off.
OThe sensor cannot detect correctly
because it is covered in some way.
OWhen the brake control or output
restriction control of a driving support
system operates.
(For example: Pre-Collision System,
Drive-Start Control)
OThe parking brake is operated.
OThe vehicle is stopped by system con-
trol on a steep incline.
OThe following are detected when the
vehicle has been stopped by system
control:
• The driver is not wearing a seat belt.
• The driver’s door is opened.
• The vehicle has been stopped for
about 3 minutes
Enabling/Disabling the
Dynamic Radar Cruise Con-
trol with Road Sign Assist
(vehicles with RSA)

3425-5. Using the driving support systems
If vehicle-to-vehicle distance control
mode is automatically canceled for any
reasons other than the above, there
may be a malfunction in the system.
Contact any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer.
QAutomatic cancelation of constant
speed control mode
Constant speed control mode is auto-
matically canceled in the following situa-
tions:
OActual vehicle speed is more than
approximately 16 km/h (10 mph)
below the set vehicle speed.
OActual vehicle speed falls below
approximately 30 km/h (20 mph).
OVSC is activated.
OTRC is activated for a period of time.
OWhen the VSC or TRC system is
turned off.
OWhen the brake control or output
restriction control of a driving support
system operates.
(For example: Pre-Collision System,
Drive-Start Control)
OThe parking brake is operated.
If constant speed control mode is auto-
matically canceled for any reasons other
than the above, there may be a malfunc-
tion in the system. Contact any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
QThe Dynamic Radar Cruise Control
with Road Sign Assist may not
operate properly when (vehicles
with RSA)
As the Dynamic Radar Cruise Control
with Road Sign Assist may not operate
properly in conditions in which RSA may
not operate or detect correctly
(P.331), when using this function,
make sure to check the speed limit sign
displayed.In the following situations, the set speed
may not be changed to the recognized
speed limit by pressing and holding the
“+RES”/“-SET” switch.
OIf speed limit information is not avail-
able
OWhen the recognized speed limit is
the same as the set speed
OWhen the recognized speed limit is
outside of the speed range that the
dynamic radar cruise control system
can operate
QBrake operation
A brake operation sound may be heard
and the brake pedal response may
change, but these are not malfunctions.
QWarning messages and buzzers for
dynamic radar cruise control with
full-speed range
Warning messages and buzzers are
used to indicate a system malfunction or
to inform the driver of the need for cau-
tion while driving. If a warning message
is shown on the multi-information dis-
play, read the message and follow the
instructions. (P.309, 518)
QWhen the sensor may not be cor-
rectly detecting the vehicle ahead
In the case of the following and depend-
ing on the conditions, operate 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 cor-
rectly detect these types of vehicles, the
approach warning (P.339) may not be
activated.
OVehicles that cut in suddenly
OVehicles traveling at low speeds
OVehicles that are not moving in the
same lane
OVehicles with small rear ends (trailers
with no load on board, etc.)

343
5
5-5. Using the driving support systems
Driving
OMotorcycles traveling in the same lane
OWhen water or snow thrown up by the surrounding vehicles hinders the
detecting of the sensor
OWhen your vehicle is pointing
upwards (caused by a heavy load in the luggage compartment, etc.)
OPreceding vehicle has an extremely high ground clearance
QConditions under which the vehi-cle-to-vehicle distance control mode may not function correctly
In the case of the following conditions, operate the brake pedal (or accelerator pedal, depending on the situation) as
necessary.
As the sensor may not be able to cor- rectly detect vehicles ahead, the system
may not operate properly.
OWhen the road curves or when the
lanes are narrow
OWhen steering wheel operation or
your position in the lane is unstable
OWhen the vehicle ahead of you decel-
erates suddenly
OWhen driving on a road surrounded by
a structure, such as in a tunnel or on a bridge
OWhile the vehicle speed is decreasing to the set speed after the vehicle accelerates by depressing the accel-
erator pedal

3745-5. Using the driving support systems
QSensor detection information
OThe sensor’s detection areas are lim-
ited to the areas around the vehicle’s
front and rear bumpers.
OThe following situations may occur
during use.
• Depending on the shape of the object
and other factors, the detection dis-
tance may shorten, or detection may
be impossible.
• Detection may be impossible if static
objects draw too close to the sensor.
• There will be a short delay between
static object detection and display
(warning buzzer sounds). Even at low
speeds, there is a possibility that the
object will come within 25 cm (9.8 in.)
before the display is shown and the
warning buzzer sounds.
• It might be difficult to hear the buzzer
due to the volume of the audio system
or air flow noise of the air conditioning
system.
• It may be difficult to hear the sound of
this system due to the buzzers of
other systems.
QObjects which the system may not
properly detect
The shape of the object may prevent the
sensor from detecting it. Pay particular
attention to the following objects:
OWires, fences, ropes, etc.
OCotton, snow and other materials that
absorb sound waves
OSharply-angled objects
OLow objects
OTall objects with upper sections pro-
jecting outwards in the direction of
your vehicle
People may not be detected if they are
wearing certain types of clothing.
QSituations in which the system may
not operate properly
Certain vehicle conditions and the sur-
rounding environment may affect the
ability of a sensor to correctly detect
objects. Particular instances where this
may occur are listed below.
OThere is dirt, snow or ice on a sensor.
(Cleaning the sensors will resolve this
problem.)
OA sensor is frozen. (Thawing the area
will resolve this problem.)
In especially cold weather, if a sensor
is frozen the sensor display may be
displayed abnormally, or objects, such
as a wall, may not be detected.
OWhen a sensor or the area around a
sensor is extremely hot or cold.
OOn an extremely bumpy road, on an
incline, on gravel, or on grass.
OWhen vehicle horns, vehicle detec-
tors, motorcycle engines, air brakes of
large vehicles, the clearance sonar of
other vehicles or other devices which
produce ultrasonic waves are near the
vehicle.
OA sensor is coated with a sheet of
spray or heavy rain.
OIf objects draw too close to the sensor.
OWhen a pedestrian is wearing clothing
that does not reflect ultrasonic waves
(ex. skirts with gathers or frills).
OWhen objects that are not perpendicu-
lar to the ground, not perpendicular to
the vehicle traveling direction,
uneven, or waving are in the detection
range.
OStrong wind is blowing.
OWhen driving in inclement weather
such as fog, snow or a sandstorm.
OWhen an object that cannot be
detected is between the vehicle and a
detected object.
OIf an object such as a vehicle, motor-
cycle, bicycle or pedestrian cuts in
front of the vehicle or runs out from

375
5 5-5. Using the driving support systems
Driving
the side of the vehicle.
OIf the orientation of a sensor has been
changed due to a collision or other
impact.
OWhen equipment that may obstruct a
sensor is installed, such as a towing
eyelet, bumper protector (an addi-
tional trim strip, etc.), bicycle carrier,
or snow plow.
OIf the front of the vehicle is raised or
lowered due to the carried load.
OIf the vehicle cannot be driven in a
stable manner, such as when the
vehicle has been in an accident or is
malfunctioning.
OWhen tire chains, a compact spare
tire or an emergency tire puncture
repair kit are used.
QSituations in which the system may
operate even if there is no possibil-
ity of a collision
In some situations, such as the follow-
ing, the system may operate even
though there is no possibility of a colli-
sion.
OWhen driving on a narrow road.
OWhen driving toward a banner, flag,
low-hanging branch or boom barrier
(such as those used at railroad cross-
ings, toll gates and parking lots).
OWhen there is a rut or hole in the sur-
face of the road.
OWhen driving on a metal cover (grat-
ing), such as those used for drainage
ditches.
OWhen driving up or down a steep
slope.
OIf a sensor is hit by a large amount of water, such as when driving on a
flooded road.
OThere is dirt, snow, water drops or ice
on a sensor. (Cleaning the sensors
will resolve this problem.)
OA sensor is coated with a sheet of
spray or heavy rain.
OWhen driving in inclement weather
such as fog, snow or a sandstorm.
OWhen strong winds are blowing.
OWhen vehicle horns, vehicle detec-
tors, motorcycle engines, air brakes of
large vehicles, the clearance sonar of
other vehicles or other devices which
produce ultrasonic waves are near the
vehicle.
OIf the front of the vehicle is raised or
lowered due to the carried load.
OIf the orientation of a sensor has been
changed due to a collision or other
impact.
OThe vehicle is approaching a tall or
curved curb.
ODriving close to columns (H-shaped
steel beams, etc.) in multi-story park-
ing garages, construction sites, etc.
OIf the vehicle cannot be driven in a
stable manner, such as when the
vehicle has been in an accident or is
malfunctioning.
OOn an extremely bumpy road, on an
incline, on gravel, or on grass.

379
5
5-5. Using the driving support systems
Driving
*: If equipped
QParking Support Brake func-
tion (static objects)
 P.383
QParking Support Brake func-
tion (rear-crossing vehicles)
 P.386
PKSB (Parking Support
Brake)*
The Parking Support Brake
system consists of the follow-
ing functions that operate
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 oper-
ates to urge the driver to take
evasive action. If the system
determines that the possibility
of a collision with a detected
object is extremely high, the
brakes are automatically
applied to help avoid the colli-
sion or help reduce the impact
of the collision.
PKSB (Parking Support
Brake) system
WARNING
QCautions regarding the use of the system
Do not overly rely on the system, as doing so may lead to an accident.
Always drive while checking the
safety of the surroundings of the vehi- cle.
Depending on the vehicle and road
conditions, weather, etc., the system may not operate.
The detection capabilities of sensors
and radars are limited. Always drive while checking the safety of the sur-roundings of the vehicle.
OThe driver is solely responsible for safe driving. Always drive carefully,
taking care to observe your sur- roundings. The Parking Support Brake system is designed to pro-
vide support to lessen the severity of collisions. However, it may not operate in some situations.
OThe Parking Support Brake system 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 immediately as brake control will be canceled after approximately 2 seconds.
OIt is extremely dangerous to check the system operations by intention-
ally driving the vehicle into the direction of a wall, etc. Never attempt such actions.
QWhen to disable the Parking Sup-port Brake
In the following situations, disable the Parking Support Brake as the system may operate even though there is no
possibility of a collision.
OWhen inspecting the vehicle using
a chassis roller, chassis dynamo or free roller.

3805-5. Using the driving support systems
The Parking Support Brake can be
enabled/disabled on the screen
of the multi-information display. All
of the Parking Support Brake func-
tions (static objects and rear-cross-
ing vehicles) are enabled/disabled
simultaneously. ( P.184)
When the Parking Support Brake is dis-
abled, the PKSB OFF indicator
( P.169) illuminates on the multi-infor-
mation display.
To re-enable the system, select on
the multi-information display, select
and turn it on.
If the system is disabled, it will remain
off even if the power switch is turned to
ON after the power switch has been
turned off.
WARNING
OWhen loading the vehicle onto a boat, truck or other transport ves-
sel.
OIf the suspension has been modi-
fied or tires of a size other than specified are installed.
OIf the front of the vehicle is raised or lowered due to the carried load.
OWhen equipment that may obstruct a sensor is installed, such as a tow-ing eyelet, bumper protector (an
additional trim strip, etc.), bicycle carrier, or snow plow.
OWhen using automatic car washing devices.
OIf the vehicle cannot be driven in a stable manner, such as when the vehicle has been in an accident or
is malfunctioning.
OWhen the vehicle is driven in a
sporty manner or off-road.
OWhen the tires are not properly
inflated.
OWhen the tires are very worn.
OWhen tire chains, a compact spare tire or an emergency tire puncture
repair kit are used.
NOTICE
QIf “Parking Support Brake Unavailable” is displayed on the
multi-information display and the PKSB OFF indicator illuminates
If this message is displayed immedi-
ately after the power switch is changed to ON, operate the vehicle carefully, paying attention to your sur-
roundings. It may be necessary to drive the vehicle for a certain amount of time before the system returns to
normal. (If the system does not return to normal after driving for a while, clean the sensors and their surround-
ing area on the bumpers.)
Enabling/Disabling the Park-
ing Support Brake

383
5 5-5. Using the driving support systems
Driving
ing the accelerator pedal.
QRe-enabling the Parking Support
Brake
To re-enable the Parking Support Brake
when it is disabled due to operation of
the Parking Support Brake, either
enable the system again (P.380), or
turn the power switch off and then back
to ON. Additionally, if the object
becomes no longer in the traveling
direction of the vehicle or if the traveling
direction of the vehicle changes (such
as changing from moving forward to
backing up, or from backing up to mov-
ing forward), the system will be re-
enabled automatically.
QIf “Parking Support Brake Unavail-
able” is displayed on the multi-
information display and the PKSB
OFF indicator illuminates
OIf “Clean Parking Assist Sensor” is
displayed simultaneously, a sensor
may be covered with ice, snow, dirt,
etc. In this case, remove the ice,
snow, dirt, etc., from the sensor to
return the system to normal. If this
message is shown even after remov-
ing dirt from the sensor, or shown
when the sensor was not dirty to begin
with, have the vehicle inspected at
any authorized Toyota retailer or
Toyota authorized repairer, or any reli-
able repairer.
OIf “Parking Assist Unavailable” is dis-
played simultaneously, water may be
continuously flowing over the sensor
surface, such as in a heavy rain.
When the system determines that it is
normal, the system will return to nor-
mal.
*: If equipped
This function will operate in situa-
tions such as the following if an
object is detected in the traveling
direction of the vehicle.
Parking Support Brake
function (static objects)
*
If the sensors detect a static
object, such as a wall, in the
traveling direction of the vehi-
cle and the system determines
that a collision may occur due
to the vehicle suddenly moving
forward due to an accidental
accelerator pedal operation,
the vehicle moving the unin-
tended direction due to the
wrong shift position being
selected, 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 opera-
tion

3845-5. Using the driving support systems
QWhen traveling at a low speed
and the brake pedal is not
depressed, or is depressed
late
QWhen the accelerator pedal is
depressed excessively
QWhen the vehicle moves in the
unintended direction due to
the wrong shift position being
selected
 P.371
QThe Parking Support Brake func- tion (static object) will operate
when
The function will operate when the PKSB OFF indicator is not illuminated
( P.168, 169) and all of the following conditions are met:
OHybrid system output restriction con-
Types of sensors
WARNING
QTo ensure the system can oper-
ate properly
 P.372
QIf the Parking Support Brake function (static objects) operates unnecessarily, such as at a rail-
road crossing
 P.382
QNotes when washing the vehicle
 P.373

385
5 5-5. Using the driving support systems
Driving
trol
• The Parking Support Brake is
enabled.
• The vehicle speed is approximately 15
km/h (9 mph) or less.
• There is a static object in the traveling
direction of the vehicle and approxi-
mately 2 to 4 m (6 to 13 ft.) away.
• The Parking Support Brake deter-
mines that a stronger-than-normal
brake operation is necessary to avoid
a collision.
OBrake control
• Hybrid system output restriction con-
trol is operating
• The Parking Support Brake deter-
mines that an immediate brake opera-
tion is necessary to avoid a collision.
QThe Parking Support Brake func-
tion (static objects) will stop oper-
ating when
The function will stop operating if any of
the following conditions are met:
OHybrid system output restriction con-
trol
• The Parking Support Brake is dis-
abled.
• The system determines that the colli-
sion has become avoidable with nor-
mal brake operation.
• The static object is no longer approxi-
mately 2 to 4 m (6 to 13 ft.) away from
the vehicle or in the traveling direction
of the vehicle.
OBrake control
• The Parking Support Brake is dis-
abled.
• Approximately 2 seconds have
elapsed since the vehicle was
stopped by brake control.
• The brake pedal is depressed after
the vehicle is stopped by brake con-
trol.
• The static object is no longer approxi-
mately 2 to 4 m (6 to 13 ft.) away from
the vehicle or in the traveling direction
of the vehicle.
QDetection range of the Parking Sup-
port Brake function (static objects)
The detection range of the Parking Sup-port Brake function (static objects) dif-
fers from the detection range of the
Toyota parking assist-sensor. (P.376)
Therefore, even if the Toyota parking
assist-sensor detects an object and pro-
vides a warning, the Parking Support
Brake function (static objects) may not
start operating.
QSituations in which the Parking
Support Brake function (static
objects) may not operate
When the shift lever is in N
QSituations in which the system may
not operate properly
P.374
QSituations in which the system may
operate even if there is no possibil-
ity of a collision
P.375