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If the hybrid system output restriction control or brake control oper-
ates, a buzzer will sound and a message will be displayed on th e
multi-information display, to alert the driver.
Depending on the situation, hybrid system output restriction co ntrol
will operate to either limit acceleration or restrict output as much as
possible.
● Hybrid system output restriction control is operating (acceleration
restriction)
Acceleration greater than a certain amount is restricted by the sys-
tem.
Multi-information display: “Object Detected, Acceleration Reduc ed.”
PKSB OFF indicator: Not illuminated
Buzzer: Does not sound
● Hybrid system output restriction control is operating (output
restricted as much as possible)
The system has determined that stronger-than-normal brake opera -
tion is necessary.
Multi-information display: “BRAKE!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep
● Brake control is operating
The system determined that emergency braking is necessary.
Multi-information display: “BRAKE!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep
● Vehicle stopped by system operation
The vehicle has been stopped by brake control operation.
Multi-information display: “Switch to Brake.” (If the accelerat or
pedal is not depressed, “Press brake pedal” will be displayed.)
PKSB OFF indicator: Illuminated
Buzzer: Short beep
Displays and buzzers for hybrid system output restriction con-
trol and brake control
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If the Parking Support Brake determines that a collision with a
detected object or pedestrian is possible, the hybrid system ou tput will
be restricted to restrain any increase in the vehicle speed. (H ybrid
system output restriction control: See figure 2.)
Additionally, if the accelerator pedal continues to be depresse d, the
brakes will be applied automatically to reduce the vehicle spee d.
(Brake control: See figure 3.)
● Figure 1: When the PKSB (Parking Support Brake) is disabled
Hybrid system output
Braking force
Time
System overview
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●Figure 2: When hybrid system output restriction control operates
Hybrid system output
Braking force
Time
Hybrid system output restriction control begins operating
System determines that possibility of collision with detected o bject
is high
Hybrid system output reduced
Example: Multi-information display: “BRAKE!”
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●Figure 3: When brake control operates
Hybrid system output
Braking force
Time
Hybrid system output restriction control begins operating
System determines that possibility of collision with detected o bject
is high
Hybrid system output reduced
System determines that possibility of collision with detected o bject
is extremely high
Brake control begins operating
Brake control strength increased
Example: Multi-information display: “BRAKE!”
Example: Multi-information display: “Switch to Brake.”
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■If the Parking Support Brake has operated
If the vehicle is stopped due to operation of the Parking Suppo rt Brake, the
Parking Support Brake will be disabled and the PKSB OFF indicat or will illu-
minate. If the Parking Support Brake operates unnecessarily, br ake control
can be canceled by depressing the brake pedal or waiting for ap proximately 2
seconds for it to automatically be canceled. Then, the vehicle can be oper-
ated by depressing the accelerator pedal.
■ Re-enabling the Parking Support Brake
To re-enable the Parking Support Brake when it has been disabled due to oper-
ation of the Parking Support Brake, either enable the system ag ain (P. 478),
or turn the engine switch off and then back to ON.
Additionally, if any of the following conditions are met, the s ystem will be re-
enabled automatically and the PKSB OFF indicator will turn off:
● The P shift position is selected
● The object is no longer detected in the traveling direction of the vehicle
● The traveling direction of the vehicle changes
■ If “Parking Support Brake Unavailable” and “Parking assist unavailable.
Clean parking assist sensor” is displayed on the multi-informat ion dis-
play and the PKSB OFF indicator is flashing
● A sensor may be covered with ice, snow, dirt, etc. Remove any ice, snow,
dirt, etc., from the sensor to return the system to normal.
If this message continues to be displayed even after cleaning t he sensor, or
is displayed even though the sensor is clean, have the vehicle inspected
any authorized Toyota retailer, Toyota authorized repairer, or any reliable
repairer.
● It is possible the sensor may be frozen.
Once the ice melts, the system will return to normal.
● Water may be continuously flowing over the surface of the sensor.
When the system judges there is no problem, the system will ret urn to nor-
mal.
■ If a 12-volt battery terminal has been disconnected and reconnected
The system needs to be initialized. To initialize the system, d rive the vehicle
straight ahead for 5 seconds or more at a speed of approximatel y 35 km/h
(22 mph) or more. Additionally, fo r vehicles with the Parking Support Brake
function, turn the steering wheel fully to the left and right w ith the vehicle
stopped.
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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 ac cident.
Always drive while checking the safety of the surroundings of t he vehicle.
Depending on the vehicle and road conditions, weather, etc., th e system
may not operate.
The detection capabilities of sensors and radars are limited. A lways drive
while checking the safety of the surroundings of the vehicle.
● The driver is solely responsible for safe driving. Always drive carefully, tak-
ing care to observe your surroundings. The Parking Support Brak e system
is designed to provide support to lessen the severity of collis ions. How-
ever, it may not operate in some situations.
● The Parking Support Brake system is not designed to stop the vehicle
completely. Additionally, even if the system has stopped the ve hicle, it is
necessary to depress the brake pedal immediately as brake contr ol 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 at tempt 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 possibility of a collision.
● 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 addi tional 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 vehi-
cle has been in an accident 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
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Parking Support Brake function (static
objects)
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
: If equipped
If the sensors detect a static object, such as a wall, in the t ravel-
ing direction of the vehicle and the system determines that a c ol-
lision may occur due to the vehicle suddenly moving forward
due to an accidental accelerator pedal operation, the vehicle
moving the unintended direction due to the wrong shift lever
being selected, or while parking or traveling at low speeds, th e
system will operate to lessen the impact with the detected stat ic
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 being selected
P. 456
Types of sensors