brake sensor TOYOTA TUNDRA HYBRID 2023 User Guide

2884-5. Using the driving support systems
Owners Manual_USA_M0C052_en
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
Owners Manual_USA_M0C052_en
4
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
Owners Manual_USA_M0C052_en
●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
Owners Manual_USA_M0C052_en
4
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
Owners Manual_USA_M0C052_en
■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.

2954-5. Using the driving support systems
Owners Manual_USA_M0C052_en
4
Driving
■The Parking Support Brake
function (static objects) will
stop operating when
The function will st op operating if
any of the following conditions are
met:
●Hybrid system output restriction
control
• The Parking Support Brake is dis- abled.
• The system determines that the collision has beco me avoidable
with normal brake operation.
• The static object is no longer approximately 6 to 13 ft. (2 to 4 m)
away from the vehicle or in the
traveling directi on of the vehicle.
●Brake 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 control.
• The static object is no longer
approximately 6 to 13 ft. (2 to 4 m)
away from the vehicle or in the
traveling directi on of the vehicle.
■Detection range of the Parking
Support Brake function (static
objects)
The detection range of the Parking
Support Brake function (static
objects) differs from the detection
range of the intuitive parking assist.
(  P.279) Therefore, even if the intu-
itive parking assist detects an object
and provides a warning, the Parking
Support Brake function (static
objects) may not start operating.
■Situations in which the system
may not operate properly
 P. 2 7 7
■Situations in which the system
may operate even if there is no
possibility of a collision
 P. 2 7 8
This function will operate in situ-
ations such as the following if a
vehicle is detected in the travel-
ing direction of the vehicle.
■When reversing, a vehicle is
approaching and the brake
pedal is not depressed, or
is depressed late
 P.269
Parking Support Brake
function (rear-crossing
vehicles)
If a rear radar sensor
detects a vehicle approach-
ing from the right or left at
the rear of the vehicle and
the system determines that
the possibility of a collision
is high, this function will
perform brake control to
reduce the likelihood of an
impact with the approach-
ing vehicle.
Examples of function
operation
Types of sensors

2964-5. Using the driving support systems
Owners Manual_USA_M0C052_en
■The Parking Support Brake
function (rear-crossing vehi-
cles) will operate when
The function will operate 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.
• Vehicles are approaching from the
right or left at th e rear of the vehi-
cle at a traveling speed of approx- imately 5 mph (8 km/h) or more.
• The shift position is in R.
• The Parking Support Brake deter- mines that a stronger than normal
brake operation is necessary to
avoid a collision with an approach-
ing vehicle.
●Brake control
• Hybrid system output restriction control is operating.
• The Parking Support Brake deter-
mines that an emergency brake
operation is necessary to avoid a
collision with an approaching vehi-
cle.
■The Parking Support Brake
function (rear-crossing vehi-
cles) will stop operating when
The function will stop operating if
any of the following conditions are
met:
●Hybrid system output restriction
control
• The Parking Support Brake is dis- abled.
• The collision becomes avoidable with normal brake operation.
• A vehicle is no longer approaching
from the right or left at the rear of
the vehicle.
●Brake 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 control.
• A vehicle is no longer approaching from the right or left at the rear of
the vehicle.
■Detection area of the Parking
Support Brake function (rear-
crossing vehicles)
The detection area of the Parking
Support Brake function (rear-cross-
ing vehicles) differs from the detec-
tion area of the RCTA function
(  P.283). Therefor e, even if the
RCTA function detects a vehicle and
WARNING
■To ensure the system can
operate properly
Observe the following precautions
regarding the rear radar sensors
(  P.268). Failure to do so may
cause a sensor to not operate
properly, and may cause an acci-
dent.
●Do not modify, disassemble or
paint the sensors.
●Do not replace a rear radar sen-
sor with a part o ther than a gen-
uine part.
●Do not damage the rear radar
sensors, and always keep the
radar sensors and their sur-
rounding area on the bumper
clean.
●If the area around a rear radar
sensor is subjected to an
impact, the system may not
operate properly due to a sen-
sor malfunction. Have the vehi-
cle inspected by your Toyota
dealer.
●Observe the rear radar sensor
handling precautions. ( P.268)

3744-5. Using the driving support systems
Owners Manual_USA_M0C052_en
system detects a panic stop sit-
uation
■Enhanced VSC (Enhanced
Vehicle Stability Control)
Provides cooperative control of
the ABS, TRAC, VSC and EPS.
Helps to maintai n directional
stability when swerving on slip-
pery road surfaces by con-
trolling steering performance.
■Trailer Sway Control
Helps the driver to control trailer
sway by selectively applying
brake pressure for individual
wheels and reducing driving
torque when trailer sway is
detected.
■TRAC (Traction Control)
Helps to maintain drive power
and prevent the drive wheels
from spinning when starting the
vehicle or accelerating on slip-
pery roads
■Hill-start assist control
Helps to reduce the backward
movement of the vehicle when
starting on an uphill
■AVS (Adaptive Variable
Suspension System) (if
equipped)
The damping force of the shock
absorbers are independently
controlled for the 4 wheels
according to factors including
the road surface conditions and
driving operation, contributing
toward enhancing smooth driv- ing comfort and superior stabil-
ity, and helping to maintain
vehicle posture.
In addition, the damping force
can be changed by selecting the
drive mode with the driving
mode select (
P.358), and driv-
ing comfort can be ensured
during off-road driving by setting
the front-wheel drive control
switch to “4L”.( P.361)
■EPS (Electric Power Steer-
ing)
Employs an electric motor to
reduce the amount of effort
needed to turn the steering
wheel
■The Secondary Collision
Brake
When the SRS airbag sensor
detects a collision and the sys-
tem operates, the brakes and
brake lights are automatically
controlled to reduce the vehicle
speed and help reduce the pos-
sibility of further damage due to
a secondary collision.
■When the
TRAC/VSC/ABS/Trailer Sway
Control systems are operating
The slip indicator light will flash
while the TRAC/VSC/ABS/Trailer
Sway Control systems are operat-
ing.

3764-5. Using the driving support systems
Owners Manual_USA_M0C052_en
●The accelerator pedal is
depressed
●The parking brake is engaged
●A maximum of 2 seconds have
elapsed after the brake pedal is
released
●The power switch is turned to OFF
■Sounds and vibrations caused
by the ABS, brake assist, VSC,
Trailer Sway Control, TRAC and
hill-start assist control systems
●A sound may be heard from the
hybrid system compartment when
the brake pedal is depressed
repeatedly, when the hybrid sys-
tem is started or just after the vehi-
cle begins to move. This sound
does not indicate that a malfunc-
tion has occurred in any of these
systems.
●Any of the following conditions
may occur when t he above sys-
tems are operating. None of these
indicates that a malfunction has
occurred.
• Vibrations may be felt through the
vehicle body and steering.
• A motor sound may be heard also after the vehicle comes to a stop.
■ECB operating sound
ECB operating sound may be heard
in the following cases, but it does
not indicate that a malfunction has
occurred.
●Operating sound heard from the
engine compartment when the
brake pedal is operated.
●Motor sound of the brake system
heard from the front part of the
vehicle when the driver’ door is
opened.
●Operating sound heard from the
engine compartment when one or
two minutes passed after the stop
of the hybrid system.
■EPS operation sound
When the steering wheel is oper-
ated, a motor sou nd (whirring sound) may be heard. This does not
indicate a malfunction.
■Automatic reactivation of
TRAC, Trailer Sway Control and
VSC systems
After turning the TRAC, Trailer
Sway Control and VSC systems off,
the systems will be a utomatically re-
enabled in the following situations:
●When the power switch is turned
off
●If only the TRAC sy stem is turned
off, the TRAC will turn on when
vehicle speed increases
If both the TRAC and VSC sys-
tems are turned of f, automatic re-
enabling will not occur when vehi-
cle speed increases.
■Reduced effectiveness of the
EPS system
The effectiveness of the EPS sys-
tem is reduced to prevent the sys-
tem from overheating when there is
frequent steering input over an
extended period o f time. The steer-
ing wheel may f eel heavy as a
result. Should this occur, refrain
from excessive steering input or
stop the vehicle a nd turn the hybrid
system off. The EPS system should
return to normal within 10 minutes.
■Secondary Collision Brake
operating conditions
The system operates when the SRS
airbag sensor de tects a collision
while the vehicle is in motion. How-
ever, the system does not operate
when the components are dam-
aged.
■Secondary Collision Brake
automatic cancelation
The system is automatically can-
celed in any of th e following situa-
tions.
●The vehicle speed drops to
approximately 0 mph (0 km/h).
●A certain amount of time elapses
during operation

5047-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
■LTA indicator (warning buzzer)
■Intuitive parking assist OFF indicator (warning buzzer)
■PKSB OFF indicator (warning buzzer)
Warning lightDetails/Actions
(Orange)
Indicates a malfunction in t he LTA (Lane Tracing Assist)
 Follow the instructions dis played on the multi-infor-
mation display. ( P.252)
Warning lightDetails/Actions
(Flashes)
Indicates a malfunction in the i ntuitive parking assist func-
tion
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Indicates that the system is te mporarily unavailable, possi-
bly due to a sensor being dirt y or covered with ice, etc.
 Follow the instructions dis played on the multi-infor-
mation display. ( P.276)
Warning lightDetails/Actions
(Flashes)
When a buzzer sounds:
Indicates a malfun ction in the PKSB ( Parking Support
Brake) system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
When a buzzer does not sound:
Indicates that the system is te mporarily unavailable, possi-
bly due to a sensor being dirt y or covered with ice, etc.
 Follow the instructions dis played on the multi-infor-
mation display. ( P.291)