Toyota Sienna (2019 year). Manual

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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.

Vehicle-to-vehicle distance control mode (

P. 293)

Constant speed control mode (

P. 298)

Indicators
Set speed
Display
Vehicle-to-vehicle

distance

switch
Cruise control switch

Summary of functions

1
2
3
4

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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.
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:

P. 300

• Conditions under which the vehicle-to-vehicle distance control mode

may not function correctly:

P. 302

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 solely on this
system or assuming the system ensures safety while driving can lead to
an accident, resulting in death or serious injury.

Switch the dynamic radar cruise control off using the “ON-OFF” button
when not in use.

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WARNING

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 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

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-
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

When your vehicle is towing a trailer or during emergency towing

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

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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. (

P. 298)

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)

or 1 km/h (0.6 mph)

each time

the lever is operated
Large adjustment: Increases or decreases in 1 mph (1.6 km/h)

or 1 km/h

(0.6 mph)

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)

or 1 km/h (0.6 mph)

each time

the lever is operated
Large adjustment: Increases or decreases in 5 mph (8 km/h)

or 5 km/h

(3.1 mph)

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)

or 1 km/h (0.6 mph)

each time

the lever is operated
Large adjustment: The speed will continue to change while the lever is
held.

: When the set speed is shown in “MPH”

: When the set speed is shown in “km/h”

Adjusting the set speed

1
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

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.

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

Canceling and resuming the speed control

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:

P. 295

Canceling and resuming the speed setting:

P. 297

Selecting constant speed control mode

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Dynamic radar cruise control can be set when

The shift lever is in D or range 4 or higher of S has been selected.

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.

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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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.

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.

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.

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. 297) 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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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.)

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.

When the vehicle ahead of you decelerates suddenly

When driving on a road surrounded by a structure, such as in a tunnel or on
a bridge

While the vehicle speed is decreasing to the set speed after the vehicle
accelerates by depressing the accelerator pedal

When the road curves or when the lanes
are narrow

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:

The BSM (Blind Spot Monitor) function
Assists the driver in making the decision when changing lanes

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. (

P. 304)

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

of the meter control switches, select

Press

of the meter control switches, select “BSM” or

“RCTA”.

Press

of the meter control switch.

Each time

is pressed, the function changes on/off.

The outside rear view mirror indicators visibility
When under strong sunlight, the outside rear view mirror indicator may be dif-
ficult to see.

RCTA buzzer hearing
RCTA function may be difficult to hear over loud noises such as high audio
volume.

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

Toyota Sienna (2019 year). Manual - part 19