sensor TOYOTA TUNDRA HYBRID 2023 Service Manual

2834-5. Using the driving support systems
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4
Driving
area should return it to normal. Also,
the sensor may not function nor-
mally when used in extremely hot or
cold weather.
■When “Rear Cross Traffic Alert
Malfunction Visit Your Dealer”
is shown on the multi-informa-
tion display
There may be a sensor malfunction
or misaligned. Have the vehicle
inspected at your Toyota dealer.
■Radar sensors
 P. 2 6 9
■Operation of the RCTA
function
The RCTA function uses radar
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 indica-
tors and sounding a buzzer.
Approaching vehicles
Detection areas of approach-
ing 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 multimedia display.
This illustration shows an exam-
ple of a vehicle 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 for faster
vehicles approaching from far-
ther away.
Example:
RCTA function

2844-5. Using the driving support systems
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■The RCTA function is opera-
tional when
The RCTA function operates when
all of the followin g conditions are
met:
●The power switch is in ON.
●The RCTA function is on.
●The shift position 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 17 mph (28 km/h).
●The 7-pin connector for Trailer
Brake controller is not engaged. (if
equipped)
■Adjusting the buzzer volume
The buzzer volume can be adjusted
on the multi-information display.
Use the meter control switches to
change settings. ( P. 9 6 )
1 Press or of the meter
control switch to select .
2 Press or of the meter
control switch to select “RCTA”
and then press and hold .
3 Press to select the volume.
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-informatio n display when a
vehicles or an object is detected. To
mute the buzzer, press .
The buzzers for the RCTA function
and intuitive par king assist will be
muted simultaneously.
Mute will be cancele d automatically
in the following situations:
●When the shift lever is changed.
●When the vehicle speed exceeds
a certain speed.
●When there is a malfunction in a
sensor or the system is temporar-
ily unavailable.
●When the operati ng function is
disabled manually.
●When the power switch is turned
off.
■Conditions under which the
system will not detect a vehicle
The RCTA function is not designed
to detect the follo wing 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
●Guardrails, walls, signs, parked
vehicles and similar stationary
objects
*
●Small motorcycles, bicycles,
pedestrians, etc.*
●Vehicles moving away from your
Approach-
ing vehicleSpeed

Approxi-
mate alert distance
Fast17 mph
(28 km/h)66 ft. (20 m)
Slow5 mph (8 km/h)18 ft. (5.5 m)

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Driving
vehicle
●Vehicles approaching from the
parking spaces next to your vehi-
cle
*
●The distance between the sensor
and approaching vehicle gets too
close
*: Depending on the conditions, detection of a vehicle and/or
object may occur.
■Situations in which the system
may not operate properly
The RCTA function may not detect
vehicles correctly in the following
situations:
●When the sensor is misaligned
due to a strong impact to the sen-
sor or its surrounding area
●When mud, snow, ice, a sticker,
etc.,is covering the sensor or sur-
rounding area on the position
above 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
●When a vehicle is approaching at
high speed
●When equipment that may
obstruct a sensor is installed, such
as a towing eyelet, bumper pro-
tector (an additi onal trim strip,
etc.), bicycle carrier, or snow plow
●When backing up on a slope with
a sharp change in grade
●When backing out of a sharp
angle parking spot
●Immediately after the RCTA func-
tion is turned on
●Immediately after the hybrid sys-
tem is started with the RCTA func-
tion on
●When there is a significant differ-
ence in height between your vehi-
cle and the vehicle that enters the
detection area
●When a sensor or the area around
a sensor is extremely hot or cold
●If the suspension has been modi-
fied or tires of a size other than
specified are installed
●If the front of the v ehicle is raised
or lowered due to the carried load
●When turning while backing up

2864-5. Using the driving support systems
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●When a vehicle turns into the
detection area
■Situations in which the system
may operate even if there is no
possibility of a collision
Instances of the RCTA function
unnecessary detec ting a vehicle
and/or object may increase in the
following situations:
●When the parking space faces a
street and vehicles are being
driven on the street
●When the distanc e between your
vehicle and metal objects, such as
a guardrail, wall, sigh, or parked
vehicle, which may reflect electri-
cal waves toward the rear of the
vehicle, is short
●When equipment that may
obstruct a sensor is installed, such
as a towing eyelet, bumper pro-
tector (an additional trim strip,
etc.), bicycle car rier, or snow plow
●When a vehicle passes by the
side of your vehicle
●When a detected vehicle turns
while approaching the vehicle
●When there are spinning objects
near your vehicle such as the fan
of an air conditioning unit
●When water is splashed or
sprayed toward the rear bumper,
such as from a sprinkler
●Moving objects (f lags, exhaust
fumes, large rain droplets or
snowflakes, rain water on the road
surface, etc.)
●When the distance between your
vehicle and a guardrail, wall, etc.,
that enters the detection area is
short
●Gratings and gutters

2874-5. Using the driving support systems
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Driving
●When a sensor or the area around
a sensor is extremely hot or cold
●If the suspension has been modi-
fied 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
■Parking Support Brake
function (static objects)
 P.292
■Parking Support Brake
function (rear-crossing
vehicles)
 P.295
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
probability of a collision
with a detected object or
pedestrian is high, a warn-
ing operates to urge the
driver to take evasive
action. If the system deter-
mines that the possibility of
a collision with a detected
object or pedestrian is
extremely high, the brakes
are automatically applied to
help avoid the collision or
help reduce the impact of
the collision.
PKSB (Parking Support
Brake) system

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WARNING
■Cautions regarding the use of
the system
Do not overly rely on the system,
as doing so may lead to an acci-
dent.
Always drive while checking the
safety of the surroundings of the
vehicle.
Depending on the vehicle and
road conditions, weather, etc., the
system may not operate.
The detection capa bilities of sen-
sors and radars are limited.
Always drive while checking the
safety of the surroundings of the
vehicle.
●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.
●It is extremely dangerous to
check the system operations by
intentionally driving the vehicle
into the direction of a wall, etc.
Never attempt such actions.
■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 poss ibility 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 automatic car
washing devices
●If the vehicle cannot be driven in
a stable manner, such as when
the vehicle has been in an acci-
dent or is malfunctioning
●When the vehicle is driven in a
sporty manner or off-road
●When the tires are not properly
inflated
●When the tires are very worn
●When a tire chains, compact
spare tire or an emergency tire
puncture repair kit is used

2894-5. Using the driving support systems
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Driving
Press the switch to enable/dis-
able the parking support brake.
All of the Parking Support Brake
functions (static objects and
rear-crossing vehicles) are
enabled/disabled simultane-
ously.
When the Parking Support Brake is
disabled, the PKSB OFF indicator
(  P.89) illuminates.
To enable the system, press the
switch again. If disabled using this
method, the syst em will not be re- enabled by turning the power
switch off and then to ON.
■When towing a trailer
When the 7-pin connector is con-
nected and Auto Trailer Detection
(ATD) ( P.270) is activated, the
function automatically turns off.
■When “4L” mode selected (4WD
models)
The parking support brake is auto-
matically disabled.
If the hybrid system output restric-
tion control or brake control oper-
ates, a buzzer will sound and a
message will be displayed on the
multi-information display and head-
up display (if equipped), multimedia
display, to alert the driver.
Depending on the situation, hybrid
system output restriction control will
operate to either limit acceleration
or restrict output as much as possi-
ble.
 Hybrid system output restric-
tion control is operating
(acceleration restriction)
Acceleration greater than a certain
amount is restric ted by the system.
Multi-information display: “Object
Detected Acceleration Reduced”
Multimedia display and head-up
display (if equipped): No warning
displayed
PKSB OFF indicator: Not illumi-
nated
NOTICE
■If “PKSB Unavailable” is dis-
played on the multi-informa-
tion display and the PKSB
OFF indicator is on
If this message is displayed
immediately after the power
switch is changed to ON, operate
the vehicle carefully, paying atten-
tion to your surroundings. It may
be necessary to drive the vehicle
for a certain amount of time
before the system returns to nor-
mal. (If the system does not return
to normal after driving for a while,
clean the sensors and their sur-
rounding area on the bumpers.)
Enabling/Disabling the
Parking Support Brake
Display and buzzer for
hybrid system output
restriction control and
brake control

2924-5. Using the driving support systems
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●A sensor may be covered with
water drops, ice, snow, dirt, etc.
Remove the water drops, ice,
snow, dirt, etc., from the sensor to
return the system to normal.
Also, due to ice forming on a sen-
sor at low temperatures, a warn-
ing message may be displayed or
the sensor may not be able to
detect an object. Once the ice
melts, the system will return to
normal.
●If this message continues to be
displayed even after cleaning the
sensor, or is displayed even
though the sensor is clean, have
the vehicle inspected by your Toy-
ota dealer.
■If a 12-volt batte ry terminal has
been disconnected and recon-
nected
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.
This function will operate in situ-
ations such as the following if an
object is detected in the travel-
ing 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
vehicle and the system
determines that a collision
may occur due to the vehi-
cle suddenly moving for-
ward due to an accidental
accelerator pedal operation,
the vehicle moving the
unintended 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
operation

2934-5. Using the driving support systems
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Driving
■When traveling at a low
speed and the brake pedal
is not depressed, or is
depressed late
■When the accelerator pedal
is depressed excessively
■When the vehicle moves in
the unintended direction
due to the wrong shift posi-
tion being selected
 P.274
Types of sensors
WARNING
■To ensure the system can
operate properly
Observe the following precau-
tions.
Failing to do so may result in the
vehicle being unable to be driven
safely and possibly cause an acci-
dent.
●Do not damage the sensors,
and always keep them clean.
●Do not attach a sticker or install
an electronic component, such
as a backlit licen se plate (espe-
cially fluorescent type), fog
lights, fender po le or wireless
antenna near a radar sensor.

2944-5. Using the driving support systems
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■The Parking Support Brake
function (static object) will
operate when
The function will op erate when the
PKSB OFF indicator is not illumi-
nated or flashing ( P.89, 504) and
all of the followin g conditions are
met:
●Hybrid system output restriction
control
• The Parking Support Brake is enabled.
• The vehicle speed is approxi- mately 9 mph (15 km/h) or less.
• There is a static object in the trav- eling direction of the vehicle and
approximately 6 to 13 ft. (2 to 4 m)
away.
• The Parking Support Brake deter- mines that a stronger-than-nor-
mal brake operation is necessary
to avoid a collision.
●Brake control
• Hybrid system output restriction control is operating.
• The Parking Support Brake deter- mines that an immediate brake
operation is necessary to avoid a
collision.
WARNING
●Do not subject the surrounding
area of the sensor to a strong
impact. If subjected to an
impact, have the vehicle
inspected by your Toyota
dealer. If the fr ont or rear
bumper needs to be
removed/installed or replaced,
contact your Toyota dealer.
●Do not modify, disassemble or
paint the sensors.
●Do not attach a license plate
cover.
●Keep your tires properly
inflated.
■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 cross ing, brake con-
trol will be cancele d 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.