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319
4
4-5. Using the driving support systems
Driving
Support Brake functions (static
objects and rear-crossing vehicles)
are enabled/disabled simultane-
ously.
Use the meter control switches to
enable/disable the parking support
brake. ( P.100)
1 Press or to select .
2 Press or to select
and then press .
When the Parking Support Brake is dis-
abled, the PKSB OFF indicator ( P. 8 7 ) illuminates.
To re-enable the system when it was
disabled, select on the multi-infor-
mation display, se lect and then
On. If disabled using this method, the
system will not be re- enabled by turning the engine switch off and then to ON.
If the engine output restriction control or
brake control operates, a buzzer will
sound and a message will be displayed
on the multi-information display, to alert
the driver. On vehicles with a head-up
display (if equipped), the head-up dis-
play will display the same message as
the multi-information display.
Depending on the situation, engine out-
put restriction cont rol will operate to
either limit acceleration or restrict out-
put as much as possible.
Engine output restriction control
is operating (acceleration restric-
tion)
Acceleration greater than a certain
amount is restricted by the system.
Multi-information display: “Object
Detected Ahead Speed Reduced”
PKSB OFF indicator: Not illuminated
Buzzer: Does not sound
Engine output restriction control
is operating (output restricted as
much as possible)
The system has dete rmined that stron-
ger-than-normal brake operation is nec-
essary.
Multi-information display: “Brake!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep
Brake control is operating
The system determined that emer-
gency braking is necessary.
Multi-information display: “Brake!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep
Vehicle stopped by system oper-
ation
The vehicle has been stopped by brake
control operation.
Multi-information display: “Switch to
Brake” (If the accelerator pedal is not
depressed, “Press Brake Pedal” will be
displayed.)
PKSB OFF indicator: Illuminated
Buzzer: Short beep
Displays and buzzers for
engine output restriction
control and brake control
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3204-5. Using the driving support systems
If the Parking Support Brake determines that a collision with a detected
object or pedestrian is possible, the engine output will be restricted to
restrain any increase in the vehicle sp eed. (Engine output restriction con-
trol: See figure 2.)
Additionally, if the accelerator pedal continues to be depressed, the brakes
will be applied automatica lly to reduce the vehicle speed. (Brake control:
See figure 3.)
Figure 1: When the PKSB (Parking Support Brake) is disabled
Engine output
Braking force
Time
Figure 2: When engine output restriction control operates
System overview
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321
4
4-5. Using the driving support systems
Driving
Engine output
Braking force
Time
Engine output restriction control begins operating
System determines that possibility of collision with detected object is
high
Engine output reduced
Example: Multi-informat ion display: “Brake!”
Figure 3: When brake control operates
Engine output
Braking force
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3224-5. Using the driving support systems
Time
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-informat ion display: “Brake!”
Example: Multi-information di splay: “Switch to Brake”
■If the Parking Support Brake has operated
If the vehicle is stopped due to operation
of the Parking Support Brake, the Park- ing Support Brake will be disabled and
the PKSB OFF indicator will illuminate. If
the Parking Support Brake operates unnecessarily, brake control can be
canceled by depressing the brake pedal
or waiting for approximately 2 seconds for it to automatically be canceled. Then,
the vehicle can be operated by depress-
ing the accelerator pedal.
■Re-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 ena-
ble the system again ( P.318), or turn
the engine 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 moving forward), the sys-
tem will be re-enabled automatically.
■If “Parking Support Brake Unavaila-
ble” is displayed on the multi-infor- mation display and the PKSB OFF
indicator is flashing
●If this message is displayed, a sensor
on the front or rear bumper may be
dirty. Clean the sensors and their sur- rounding area on the bumpers.
■If “Parking Support Brake Unavaila-
ble” and “Parking Assist Unavaila-
ble Clean Parking Assist Sensor” are displayed on the multi-informa-
tion 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
continues to be displayed even after cleaning the sensor, or is displayed
even though the sensor is clean, have
the vehicle inspected by any author- ized Toyota retailer or Toyota author-
ized repairer, or any reliable repairer.
●A sensor may be frozen. Once the ice
melts, the system will return to nor-
mal.
●Water may be continuously flowing
over the sensor surface, such as in a heavy rain. When the system deter-
mines that it is normal, the system will
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323
4
4-5. Using the driving support systems
Driving
return to normal.
■If a battery terminal has been dis-
connected 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 35 km/h (22
mph) or more.
Page 326 of 758
3244-5. Using the driving support systems
*: 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 travelling
direction of the vehicle and the system determines that a collision
may occur due to the vehicle suddenly moving forward due to an
accidental accelerator pedal oper ation, the vehicle moving the unin-
tended direction due to the wrong shift lever 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
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325
4
4-5. Using the driving support systems
Driving
■When the accelerator pedal is depressed excessively
■When the vehicle moves in the unintended direction due to the
wrong shift lever being selected
P. 3 0 3
Types of sensors
WA R N I N G
■To ensure the system can oper- ate properly
P.305
■If the Parking Support Brake function (static objects) oper-
ates unnecessarily, such as at a
railroad crossing
P. 3 2 2
■Notes when washing the vehicle
P. 3 0 5
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3264-5. Using the driving support systems
■The Parking Support Brake func- tion (static object) will operate
when
The function will operate when the PKSB OFF indicator is not illuminated or
flashing ( P.85, 87) and all of the fol-
lowing conditions are met:
●Engine output restriction control
• The Parking Support Brake is ena- bled.
• 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.
●Brake control• Engine output restriction control is
operating
• The Parking Support Brake deter- mines that an immediate brake opera-
tion is necessary to avoid a collision.
■The 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:
●Engine output restriction control
• The Parking Support Brake is disa-
bled. • 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.
●Brake control• The Parking Support Brake is disa-
bled.
• 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.
■Detection 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.308)
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.
■Situations in which the system may not operate properly
P. 3 0 7
■Situations in which the system may
operate even if there is no possibil- ity of a collision
P. 3 0 7