Toyota Sienna (2019 year). Instruction — part 19
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Dynamic radar cruise control
In vehicle-to-vehicle distance control mode, the vehicle automatically
accelerates and decelerates to match the speed changes of the pre-
ceding vehicle even if the accelerator pedal is not depressed. In con-
stant speed control mode, the vehicle runs at a fixed speed.
Use the dynamic radar cruise control on freeways and highways.
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Vehicle-to-vehicle distance control mode (
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Constant speed control mode (
Indicators
Set speed
Display
Vehicle-to-vehicle
distance
switch
Cruise control switch
Summary of functions
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2
3
4
5
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WARNING
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Before using dynamic radar cruise control
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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.
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The dynamic radar cruise control provides driving assistance to reduce the
driver’s burden. However, there are limitations to the assistance provided.
Read the following conditions carefully. Do not overly rely on this system
and always drive carefully.
• When the sensor may not be correctly detecting the vehicle ahead:
• Conditions under which the vehicle-to-vehicle distance control mode
may not function correctly:
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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.
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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 solely on this
system or assuming the system ensures safety while driving can lead to
an accident, resulting in death or serious injury.
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Switch the dynamic radar cruise control off using the “ON-OFF” button
when not in use.
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WARNING
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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.
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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.
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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.
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Assisting the driver to operate the vehicle
The dynamic radar cruise control does not include functions which will pre-
vent or avoid collisions with vehicles ahead of your vehicle. Therefore, if
there is ever any possibility of danger, the driver must take immediate and
direct control of the vehicle and act appropriately in order to ensure the
safety of all involved.
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WARNING
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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.
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Roads where there are pedestrians, cyclists, etc.
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In heavy traffic
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On roads with sharp bends
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On winding roads
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On slippery roads, such as those covered with rain, ice or snow
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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.
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At entrances to freeways and highways
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When weather conditions are bad enough that they may prevent the sen-
sors from detecting correctly (fog, snow, sandstorm, heavy rain, etc.)
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When there is rain, snow, etc. on the front surface of the radar sensor or
camera sensor
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In traffic conditions that require frequent repeated acceleration and decel-
eration
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When your vehicle is towing a trailer or during emergency towing
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When an approach warning buzzer is heard often
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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.
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 switch.
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
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.
Driving in vehicle-to-vehicle distance control mode
1
2
3
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Press the “ON-OFF” button to
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. (
Accelerate or decelerate, with
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.
Setting the vehicle speed (vehicle-to-vehicle distance control
mode)
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To change the set speed, operate the lever until the desired set speed
is displayed.
Increases the speed
Decreases the speed
Fine adjustment: Momentarily
move the lever in the desired
direction.
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:
U.S. mainland and Hawaii
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: Increases or decreases in 1 mph (1.6 km/h)
*
1
or 1 km/h
(0.6 mph)
*
2
increments for as long as the lever is held
Canada, Samoa, Guam, Saipan and Puerto Rico
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: 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. 298), 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”
Adjusting the set speed
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2
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Pressing the switch changes the
vehicle-to-vehicle distance as fol-
lows:
Long
Medium
Short
The vehicle-to-vehicle distance is
set automatically to long mode
when the engine switch is turned to
the “ON” position (vehicles without
a smart key system) or IGNITION
ON mode (vehicles with a smart
key system).
If a vehicle is running ahead of you, the preceding vehicle mark will also be
displayed.
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.
Changing the vehicle-to-vehicle distance (vehicle-to-vehicle dis-
tance control mode)
Preceding
vehicle mark
1
2
3
Vehicle-to-vehicle distance settings (vehicle-to-vehicle distance
control mode)
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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Pulling the lever toward you
cancels the speed control.
The speed control is also canceled
when
the
brake
pedal
is
depressed.
Pushing the lever up resumes
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.
When your vehicle is too close to
a vehicle ahead, and sufficient
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.
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Warnings may not occur when
In the following instances, warnings may not occur even when the
vehicle-to-vehicle distance is small.
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When the speed of the preceding vehicle matches or exceeds
your vehicle speed
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When the preceding vehicle is traveling at an extremely slow
speed
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Immediately after the cruise control speed was set
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When depressing the accelerator pedal
Canceling and resuming the speed control
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2
Approach warning (vehicle-to-vehicle distance control mode)
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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,
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
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:
Canceling and resuming the speed setting:
Selecting constant speed control mode
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Dynamic radar cruise control can be set when
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The shift lever is in D or range 4 or higher of S has been selected.
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Vehicle speed is at or above approximately 30 mph (50 km/h).
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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.
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Automatic cancelation of vehicle-to-vehicle distance control mode
Vehicle-to-vehicle distance control mode is automatically canceled in the fol-
lowing situations:
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Actual vehicle speed falls at or below approximately 25 mph (40 km/h).
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VSC is activated.
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TRAC is activated for a period of time.
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When the VSC or TRAC system is turned off.
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The sensor cannot detect correctly because it is covered in some way.
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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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Automatic cancelation of constant speed control mode
Constant speed control mode is automatically canceled in the following situa-
tions:
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Actual vehicle speed is more than approximately 10 mph (16 km/h) below
the set vehicle speed.
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Actual vehicle speed falls below approximately 25 mph (40 km/h).
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VSC is activated.
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TRAC is activated for a period of time.
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When the VSC or TRAC system is turned off.
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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.
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Brake system operation sound
If the brakes are applied automatically while the vehicle is in vehicle-to-vehi-
cle distance control mode, a brake system operation sound may be heard.
This does not indicate a malfunction.
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If “Radar Cruise Control Unavailable” is shown on the multi-information
display
The radar cruise control system cannot be used temporarily. Use the system
when it becomes available again.
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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.
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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. 297) may not be activated.
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Vehicles that cut in suddenly
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Vehicles traveling at low speeds
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Vehicles that are not moving in the same lane
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Vehicles with small rear ends (trailers with no load on board, etc.)
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Motorcycles traveling in the same lane
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When water or snow thrown up by the surrounding vehicles hinders the
detecting of the sensor
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When your vehicle is pointing upwards
(caused by a heavy load in the luggage
compartment, etc.)
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Preceding vehicle has an extremely high
ground clearance
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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.
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When the vehicle ahead of you decelerates suddenly
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When driving on a road surrounded by a structure, such as in a tunnel or on
a bridge
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While the vehicle speed is decreasing to the set speed after the vehicle
accelerates by depressing the accelerator pedal
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When the road curves or when the lanes
are narrow
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When steering wheel operation or your
position in the lane is unstable
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BSM (Blind Spot Monitor)
The Blind Spot Monitor is a system that has 2 functions:
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The BSM (Blind Spot Monitor) function
Assists the driver in making the decision when changing lanes
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The RCTA (Rear Cross Traffic Alert) function
Assists the driver when backing up
These functions use same sensors.
Multi-information display
Turning the BSM function/RCTA function on/off. (
Outside rear view mirror indicators
BSM function:
When a vehicle is detected in a blind spot of the outside rear view mirrors
or approaching rapidly from behind into a blind spot, the outside rear view
mirror indicator on the detected side will illuminate. If the turn signal lever
is operated toward the detected side, the outside rear view mirror indicator
flashes.
RCTA function:
When a vehicle approaching from the right or left rear of the vehicle is
detected, the outside rear view mirror indicators flash.
: If equipped
Summary of the Blind Spot Monitor
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“BSM” indicator/“RCTA” indicator
When the BSM function/RCTA function is turned on, the indicator illumi-
nates.
RCTA buzzer (RCTA function only)
When a vehicle approaching from the right or left rear of the vehicle is
detected, a buzzer sounds from behind the rear seat.
Press
or
of the meter control switches, select
.
Press
or
of the meter control switches, select “BSM” or
“RCTA”.
Press
of the meter control switch.
Each time
is pressed, the function changes on/off.
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The outside rear view mirror indicators visibility
When under strong sunlight, the outside rear view mirror indicator may be dif-
ficult to see.
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RCTA buzzer hearing
RCTA function may be difficult to hear over loud noises such as high audio
volume.
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When “Blind Spot Monitor Unavailable” is shown on the multi-informa-
tion display
Water, snow, mud, etc., may be built up in the vicinity of the sensor area of
bumper. (
P. 306) Removing the water, snow, mud, etc., from the vicinity of
the sensor area bumper should return it to normal.
Also, the sensor may not function normally when used in extremely hot or
cold weather.
Turning the BSM function/RCTA function on/off
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