Toyota Prius V (2018 year). Instruction - part 14
228
4-5. Using the driving support systems
WARNING
■ Before using dynamic radar cruise control
Driving safely is the sole responsibility of the driver. Do not rely solely on the
system, and drive safely by always paying careful attention to your sur-
roundings.
The dynamic radar cruise control provides driving assistance to reduce the
driver’s burden. However, there are limitations to the assistance provided.
Set the speed appropriately depending on the speed limit, traffic flow, road
conditions, weather conditions, etc. The driver is responsible for checking
the set speed.
Even when the system is functioning normally, the condition of the preced-
ing vehicle as detected by the system may differ from the condition
observed by the driver. Therefore, the driver must always remain alert,
assess the danger of each situation and drive safely. Relying on this system
or assuming the system ensures safety while driving can lead to an acci-
dent, resulting in death or serious injury.
■ Cautions regarding the driving assist systems
Observe the following precautions, as there are limitations to the assistance
provided by the system.
Failure to do so may cause an accident resulting in death or serious injury.
● Assisting the driver to measure following distance
The dynamic radar cruise control is only intended to help the driver in
determining the following distance between the driver’s own vehicle and a
designated vehicle traveling ahead. It is not a mechanism that allows care-
less or inattentive driving, and it is not a system that can assist the driver in
low-visibility conditions. It is still necessary for driver to pay close attention
to the vehicle’s surroundings.
●Assisting the driver to judge proper following distance
The dynamic radar cruise control determines whether the following dis-
tance between the driver’s own vehicle and a designated vehicle traveling
ahead is within a set range. It is not capable of making any other type of
judgement. Therefore, it is absolutely necessary for the driver to remain
vigilant and to determine whether or not there is a possibility of danger in
any given situation.
● Assisting the driver to operate the vehicle
The dynamic radar cruise control has limited capability to prevent or avoid
a collision with a vehicle traveling ahead. Therefore, if there is ever any
danger, the driver must take immediate and direct control of the vehicle
and act appropriately in order to ensure the safety of all involved.
■ To avoid inadvertent dynamic radar cruise control activation
Switch the dynamic radar cruise control off using the “ON-OFF” button
when not in use.
4-5. Using the driving support systems
229
WARNING
■ Situations unsuitable for dynamic radar cruise control
Do not use dynamic radar cruise control in any of the following situations.
Doing so may result in inappropriate speed control and could cause an acci-
dent resulting in death or serious injury.
● Roads where there are pedestrians, cyclists, etc.
● In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as those covered with rain, ice or snow
●On steep downhills, or where there are sudden changes between sharp up
and down gradients
Vehicle speed may exceed the set speed when driving down a steep hill.
● At entrances to freeways and highways
● When weather conditions are bad enough that they may prevent the sen-
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sors from detecting correctly (fog, snow, sandstorm, heavy rain, etc.)
● When there is rain, snow, etc. on the front surface of the radar sensor or
camera sensor
● In traffic conditions that require frequent repeated acceleration and decel-
eration
● During emergency towing
● When an approach warning buzzer is heard often
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4-5. Using the driving support systems
Driving in vehicle-to-vehicle distance control mode
This mode employs a radar sensor to detect the presence of vehicles
up to approximately 328 ft. (100 m) ahead, determines the current
vehicle-to-vehicle following distance, and operates to maintain a suit-
able following distance from the vehicle ahead.
Note that vehicle-to-vehicle distance will close in when traveling on down-
hill slopes.
4-5. Using the driving support systems
231
1
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver. The desired vehicle-to-
vehicle distance can also be set by operating the vehicle-to-vehicle dis-
tance control.
2
Example of deceleration cruising and follow-up cruising
When a preceding vehicle driving slower than the set speed
appears
When a vehicle is detected running ahead of you, the system automatically
decelerates your vehicle. When a greater reduction in vehicle speed is
necessary, the system applies the brakes (the stop lights will come on at
this time). The system will respond to changes in the speed of the vehicle
ahead in order to maintain the vehicle-to-vehicle distance set by the driver.
Approach warning warns you when the system cannot decelerate suffi-
ciently to prevent your vehicle from closing in on the vehicle ahead.
Example of acceleration
3
4
When there are no longer any preceding vehicles driving slower
than the set speed
The system accelerates until the set speed is reached. The system then
returns to constant speed cruising.
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4-5. Using the driving support systems
Setting the vehicle speed (vehicle-to-vehicle distance control
mode)
Press the “ON-OFF” button to
1
activate the cruise control.
Radar cruise control indicator will
come on and a message will be
displayed on the multi-information
display.
Press the button again to deacti-
vate the cruise control.
If the “ON-OFF” button is pressed
and held for 1.5 seconds or more,
the system turns on in constant
speed control mode. (P. 236)
Accelerate or decelerate, with
2
accelerator pedal operation, to
the desired vehicle speed (at or
above approximately
30 mph
[50 km/h]) and push the lever
down to set the speed.
Cruise control “SET” indicator will
come on.
The vehicle speed at the moment
the lever is released becomes the
set speed.
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233
Adjusting the set speed
To change the set speed, operate the lever until the desired set speed
is displayed.
1
Increases the speed
2
Decreases the speed
Fine adjustment: Momentarily
move the lever in the desired direc-
tion.
Large adjustment: Hold the lever
up or down to change the speed,
and release when the desired
speed is reached.
In the vehicle-to-vehicle distance control mode, the set speed will be
increased or decreased as follows:
Fine adjustment: By 1 mph (1.6 km/h)*1 or 1 km/h (0.6 mph)*2 each
4
time the lever is operated
Large adjustment: Increases or decreases in 5 mph (8 km/h)*1 or 5 km/h
(3.1 mph)*2 increments for as long as the lever is held
In the constant speed control mode (P. 236), the set speed will be
increased or decreased as follows:
Fine adjustment: By 1 mph (1.6 km/h)*1 or 1 km/h (0.6 mph)*2 each
time the lever is operated
Large adjustment: The speed will continue to change while the lever is
held.
*
1: When the set speed is shown in “MPH”
*2: When the set speed is shown in “km/h”
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4-5. Using the driving support systems
Changing the vehicle-to-vehicle distance (vehicle-to-vehicle dis-
tance control mode)
Pressing the switch changes the
Preceding vehicle mark
vehicle-to-vehicle distance as fol-
lows:
1
Long
2
Medium
3
Short
The vehicle-to-vehicle distance is
set automatically to long mode
when the power switch is turned
ON mode.
If a vehicle is running ahead of
you, the preceding vehicle mark
will also be displayed.
Vehicle-to-vehicle distance settings (vehicle-to-vehicle distance
control mode)
Select a distance from the table below. Note that the distances shown
correspond to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle
distance increases/decreases in accordance with vehicle speed.
Distance options
Vehicle-to-vehicle distance
Long
Approximately 160 ft. (50 m)
Medium
Approximately 130 ft. (40 m)
Short
Approximately 100 ft. (30 m)
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235
Canceling and resuming the speed control
Pulling the lever toward you
1
cancels the speed control.
The speed control is also canceled
when the brake pedal is
depressed.
Pushing the lever up resumes
2
the cruise control and returns
vehicle speed to the set speed.
However, cruise control does not resume when the vehicle speed is
approximately 25 mph (40 km/h) or less.
Approach warning (vehicle-to-vehicle distance control mode)
When your vehicle is too close to
a vehicle ahead, and sufficient
4
automatic deceleration via the
cruise control is not possible, the
display will flash and the buzzer
will sound to alert the driver. An
example of this would be if
another driver cuts in front of you
while you are following a vehicle.
Depress the brake pedal to
ensure an appropriate vehicle-to-
vehicle distance.
■ Warnings may not occur when
In the following instances, warnings may not occur even when the
vehicle-to-vehicle distance is small.
● When the speed of the preceding vehicle matches or exceeds
your vehicle speed
● When the preceding vehicle is traveling at an extremely slow
speed
● Immediately after the cruise control speed was set
● When depressing the accelerator pedal
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4-5. Using the driving support systems
Selecting constant speed control mode
When constant speed control mode is selected, your vehicle will main-
tain a set speed without controlling the vehicle-to-vehicle distance.
Select this mode only when vehicle-to-vehicle distance control mode
does not function correctly due to a dirty radar sensor, etc.
With the cruise control off,
1
press and hold the “ON-OFF”
button for 1.5 seconds or more.
Immediately after the
“ON-OFF”
button is pressed, the radar cruise
control indicator will come on.
Afterwards, it switches to the cruise
control indicator.
Switching to constant speed con-
trol mode is only possible when
operating the lever with the cruise
control off.
Accelerate or decelerate, with
2
accelerator pedal operation, to
the desired vehicle speed (at or
above approximately
25 mph
[40 km/h]) and push the lever
down to set the speed.
Cruise control “SET” indicator will
come on.
The vehicle speed at the moment
the lever is released becomes the
set speed.
Adjusting the speed setting: P. 233
Canceling and resuming the speed setting: P. 235
4-5. Using the driving support systems
237
■Dynamic radar cruise control can be set when
●The shift position is in D.
● Vehicle speed is at or above approximately 30 mph (50 km/h).
■Accelerating after setting the vehicle speed
The vehicle can accelerate by operating the accelerator pedal. After acceler-
ating, the set speed resumes. However, during vehicle-to-vehicle distance
control mode, the vehicle speed may decrease below the set speed in order
to maintain the distance to the preceding vehicle.
■Automatic cancelation of vehicle-to-vehicle distance control mode
Vehicle-to-vehicle distance control mode is automatically canceled in the fol-
lowing situations.
● Actual vehicle speed falls at or below approximately 25 mph (40 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is turned off.
4
●The sensor cannot detect correctly because it is covered in some way.
●Pre-collision braking is activated.
If vehicle-to-vehicle distance control mode is automatically canceled for any
other reason, there may be a malfunction in the system. Contact your Toyota
dealer.
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4-5. Using the driving support systems
■Automatic cancelation of constant speed control mode
Constant speed control mode is automatically canceled in the following situa-
tions:
● Actual vehicle speed is more than approximately 10 mph (16 km/h) below
the set vehicle speed.
● Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is turned off.
●Pre-collision braking is activated.
If constant speed control mode is automatically canceled for any other rea-
son, there may be a malfunction in the system. Contact your Toyota dealer.
■ Warning messages and buzzers for dynamic radar cruise control
Warning messages and buzzers are used to indicate a system malfunction or
to inform the driver of the need for caution while driving. If a warning message
is shown on the multi-information display, read the message and follow the
instructions.
■ When the sensor may not be correctly detecting the vehicle ahead
In the case of the following and depending on the conditions, operate the
brake pedal when deceleration of the system is insufficient or operate the
accelerator pedal when acceleration is required.
As the sensor may not be able to correctly detect these types of vehicles, the
approach warning (P. 235) may not be activated.
● Vehicles that cut in suddenly
● Vehicles traveling at low speeds
● Vehicles that are not moving in the same lane
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239
● Vehicles with small rear ends (trailers with no load on board, etc.)
●Motorcycles traveling in the same lane
● When water or snow thrown up by the surrounding vehicles hinders the
detecting of the sensor
●When your vehicle is pointing upwards
(caused by a heavy load in the luggage
compartment, etc.)
4
●Preceding vehicle has an extremely high
ground clearance
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4-5. Using the driving support systems
■Conditions under which the vehicle-to-vehicle distance control mode
may not function correctly
In the case of the following conditions, operate the brake pedal (or accelera-
tor pedal, depending on the situation) as necessary.
As the sensor may not be able to correctly detect vehicles ahead, the system
may not operate properly.
● When the road curves or when the lanes
are narrow
● When steering wheel operation or your
position in the lane is unstable
● When the vehicle ahead of you decelerates suddenly
4-5. Using the driving support systems
241
Rear view monitor system
The rear view monitor system assists the driver by displaying an
image of the view behind the vehicle with fixed guide lines on
the screen while backing up, for example while parking.
The screen illustrations used in this text are intended as examples,
and may differ from the image that is actually displayed on the
screen.
The rear view image is displayed when the shift lever is in R and the
power switch is in ON mode.
The rear view monitor system will be deactivated when the shift lever is in
any position other than R.
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4-5. Using the driving support systems
Using the rear view monitor system
■ Screen description
The rear view monitor system screen will be displayed if the shift
lever is shifted to R while the power switch is in ON mode.
1
Vehicle width extension guide line
Displays a guide path when the vehicle is being backed straight up.
The displayed width is wider than the actual vehicle width.
2
Vehicle center guide line
This lines indicate the estimated vehicle center on the ground.
3
Distance guide line
Displays a point approximately 0.5 m (1.5 ft.) (red) from the edge of the
bumper.
Distance guide line
4
Displays a point approximately 1 m (3 ft.) (blue) from the edge of the
bumper.
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243
Rear view monitor system precautions
■ Area displayed on screen
The rear view monitor system
displays an image of the view
from the bumper of the rear
area of the vehicle.
The image adjustment proce-
dure for the rear view monitor
system screen is the same as
the procedure for adjusting the
screen. (P. 280)
• The area displayed on the
screen may vary according to
vehicle orientation conditions.
Corners of bumper
• Objects which are close to either
4
corner of the bumper or under
the bumper cannot be dis-
played.
• The camera uses a special lens. The distance of the image that appears
on the screen differs from the actual distance.
• Items which are located higher than the camera may not be displayed
on the monitor.
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4-5. Using the driving support systems
■ Rear view monitor system camera
The camera for the rear view
monitor system is located as
shown in the illustration.
● Using the camera
If dirt or foreign matter (such as water droplets, snow, mud etc.)
is adhering to the camera, it cannot transmit a clear image. In
this case, flush it with a large quantity of water and wipe the cam-
era lens clean with a soft and wet cloth.
■ Differences between the screen and the actual road
The distance guide lines and the vehicle width guide lines may not
actually be parallel with the dividing lines of the parking space, even
when they appear to be so. Be sure to check visually.
The distances between the vehicle width guide lines and the left
and right dividing lines of the parking space may not be equal, even
when they appear to be so. Be sure to check visually.
The distance guide lines give a distance guide for flat road sur-
faces. In any of the following situations, there is a margin of error
between the fixed guide lines on the screen and the actual dis-
tance/course on the road.