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279
4
4-5. Using the driving support systems
Driving
If the Parking Supp ort 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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2804-5. Using the driving support systems
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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281
4
4-5. Using the driving support systems
Driving
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.277), 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 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.
●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.
Also, due to ice forming on a sensor at low temperatures, a warning 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 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 this message continues to be dis-played even after cleaning the sensor,
or is displayed even though the sen-
sor is clean, have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer,
or any reliable repairer.
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2824-5. Using the driving support systems
■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. Additionally, for vehicles
with the Parking Support Brake function, turn the steering wheel fully to the left
and right with the vehicle stopped.
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283
4
4-5. Using the driving support systems
Driving
*: 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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2844-5. Using the driving support systems
■When the accelerator pedal is depressed excessively
■When the vehicle moves in the unintended direction due to the
wrong shift lever being selected
P. 2 6 3
Types of sensors
WA R N I N G
■To ensure the system can oper- ate properly
P.264
■If the Parking Support Brake function (static objects) oper-
ates unnecessarily, such as at a
railroad crossing
P. 2 8 1
■Notes when washing the vehicle
P. 2 6 5
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285
4
4-5. Using the driving support systems
Driving
■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.81, 83) 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.268)
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. 2 6 6
■Situations in which the system may
operate even if there is no possibil- ity of a collision
P. 2 6 7
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2864-5. Using the driving support systems
*: If equipped
This function will operate in situations such as the following if a vehicle is
detected in the traveling direction of the vehicle.
■When reversing, a vehicle is approaching and the brake pedal is not
depressed, or is depressed late
P. 2 5 9
■The Parking Support Brake func-
tion (rear-crossing vehicles) will operate when
The function will operate when the
PKSB OFF indicator is not illuminated or flashing ( P.81, 83) 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.
Parking Suppor t Brake function (rear-crossing vehi-
cles)*
If a rear radar sensor detects a vehicle approaching from the right or
left at the rear of the vehicle and the system determines that the pos-
sibility of a collision is high, this function will perform brake control
to reduce the likelihood of an impact with the approaching vehicle.
Examples of function operation
Types of sensors
WA R N I N G
■To ensure the system can oper-
ate properly
P.259