Toyota Prius Prime (2022 year). Manual in english - page 26

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●

Increasing the set speed by the accelerator pedal
Accelerate with accelerator pedal operation to the desired vehicle
speed.
Push the lever down.

Pressing  the  switch  changes  the
vehicle-to-vehicle  distance  as  fol-
lows:

Long
Medium
Short

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.
When the vehicle is stopped by system control, the vehicle stops at a
certain vehicle-to-vehicle distance depending on the situation.

Changing the vehicle-to-vehicle distance (vehicle-to-vehicle dis-
tance control mode)

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Preceding 
vehicle mark

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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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5-5. Using the driving support systems

After  the  vehicle  ahead  of  you
starts off, push the lever up.
Your  vehicle  will  also  resume  fol-
low-up  cruising  if  the  accelerator
pedal is depressed after the vehi-
cle ahead of you starts off.

Pulling  the  lever  toward  you
cancels the speed control.

The speed control is also canceled
when 

the 

brake 

pedal 

is

depressed.
(When  the  vehicle  has  been
stopped 

by 

system 

control,

depressing  the  brake  pedal  does
not cancel the setting.)

Pushing the lever up resumes the cruise control and returns vehicle
speed to the set speed.

Resuming follow-up cruising when the vehicle has been stopped
by system control (vehicle-to-vehicle distance control mode)

Canceling and resuming the speed control

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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

Approach warning (vehicle-to-vehicle distance control mode)

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5-5. Using the driving support systems

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, 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  dynamic
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  20  mph
[30  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. 416

Canceling and resuming the speed setting: 



P. 418

Selecting constant speed control mode

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■

Dynamic radar cruise control with full-speed range can be set when

●

The shift position is in D.

●

The desired set speed can be set when the vehicle speed is approximately
20 mph (30 km/h) or more.
(However,  when  the  vehicle  speed  is  set  while  driving  at  below  approxi-
mately 20 mph [30 km/h], the set speed will be set to approximately 20 mph
[30 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.

■

When the vehicle stops while follow-up cruising

●

Pushing  the  lever  up  while  the  vehicle  ahead  stops  will  resume  follow-up
cruising if the vehicle ahead starts off within approximately 3 seconds after
the lever is pushed up.

●

If the vehicle ahead starts off within 3 seconds after your vehicle stops, fol-
low-up cruising will be resumed.

■

Automatic cancelation of vehicle-to-vehicle distance control mode

Vehicle-to-vehicle distance control mode is automatically canceled in the fol-
lowing situations.

●

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.

●

When the brake control or output restriction control of a driving support sys-
tem operates.
(For example: Pre-Collision System, Drive-Start Control)

●

The parking brake is operated.

●

The vehicle is stopped by system control on a steep incline.

●

The following are detected when the vehicle has been stopped by system
control:
• The driver is not wearing a seat belt.
• The driver’s door is opened.
• The vehicle has been stopped for about 3 minutes. 
The shift position may automatically change to P. (



P. 342



If vehicle-to-vehicle distance control mode is automatically canceled for any
reasons  other  than  the  above,  there  may  be  a  malfunction  in  the  system.
Contact your Toyota dealer.

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5-5. 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 20 mph (30 km/h).

●

VSC is activated.

●

TRAC is activated for a period of time.

●

When the VSC or TRAC system is turned off.

●

When the brake control or output restriction control of a driving support sys-
tem operates.
(For example: Pre-Collision System, Drive-Start Control)

If  constant  speed  control  mode  is  automatically  canceled  for  any  reasons
other than the above, there may be a malfunction in the system. Contact your
Toyota dealer.

■

Brake operation

A brake operation sound may be heard and the brake pedal response may
change, but these are not malfunctions.

■

Warning  messages  and  buzzers  for  dynamic  radar  cruise  control  with
full-speed range

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. (



P. 376, 681) 

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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. 419) may not be activated.

●

Vehicles that cut in suddenly

●

Vehicles traveling at low speeds

●

Vehicles that are not moving in the same lane

●

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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5-5. 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 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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Driving mode select switch

Repeatedly press the switch until the system changes to the intended
driving mode.

Each time the switch is pressed, the driving mode changes in the following
order  and  the  “ECO  MODE”  and  “PWR  MODE”  indicators  turn  on  or  off
accordingly.

In response to driving conditions, one of 3 driving modes can be
selected.

Driving modes

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5-5. Using the driving support systems

Normal mode
Suitable for normal driving.

When  normal mode is selected, the “ECO MODE”  and “PWR MODE”
indicators turn off.

Power mode
Suitable  for  when  crisp  handling  and  enhanced  accelerator
response are desired, such as when driving on mountainous roads.

When  power  mode  is  selected,  the  “PWR  MODE”  indicator  will  illumi-
nate on the main display.

Eco drive mode
Suitable  for  driving  that  improves  fuel  economy  by  generating
torque in response to accelerator pedal operations more smoothly
than in normal mode.

When Eco drive mode is selected, the “ECO MODE” indicator will illumi-
nate on the main display.
While  the  air  conditioning  is  being  used,  the  system  automatically
switches to air conditioning eco mode (



P. 511, 523), allowing for driv-

ing that leads to even better fuel economy.

■

The driving mode after turning the power switch off

The  driving  mode  will  not  be  changed  automatically  until  the  switch  is
pressed, even if the power switch is turned off.

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BSM (Blind Spot Monitor)



The Blind Spot Monitor is a system that has 2 functions;

●

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

●

The Rear Cross Traffic Alert function 
Assists the driver when backing up

These functions use same sensors.

Outside rear view mirror indicators

Blind Spot Monitor function: 
When a vehicle is detected in the blind spot, the outside rear view mirror
indicator comes on while the turn signal lever is not operated. If the turn
signal  lever  is  operated  toward  the  detected  side,  the  outside  rear  view
mirror indicator flashes.
Rear Cross Traffic Alert 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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The Blind Spot Monitor on/off screen and indicator

The Blind Spot Monitor function and Rear Cross Traffic Alert function can
be switched on and off using the multi-information display. (



P. 246)

When  switched  on,  the  BSM  indicator  illuminates  on  the  meter  and  the
buzzer sounds.

Rear  Cross  Traffic Alert  buzzer  (Rear  Cross  Traffic Alert  function
only)

When  a  vehicle  approaching  from  the  right  or  left  rear  of  the  vehicle  is
detected, a buzzer sounds from the driver’s side instrument panel.

RCTA detection screen (RCTA function only)

If a vehicle approaching from the right or left at the rear of the vehicle is
detected, the RCTA detection screen will be shown on the multi-informa-
tion display.

The Blind Spot Monitor function and Rear Cross Traffic Alert function

can be enabled/disabled on the 

 screen (



P. 246) of the multi-

information display.

Once the systems are disabled, the systems will not be enabled until they

are  enabled  by  the 

  screen  of  multi-information  display  again.  (The

systems  are  not  automatically  enabled  even  when  the  hybrid  system  is
restarted.)

Changing settings of the Blind Spot Monitor function and Rear
Cross Traffic Alert function

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The BSM outside rear view mirror indicators visibility

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

■

The Rear Cross Traffic Alert buzzer hearing

The Rear Cross Traffic Alert buzzer 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

The  sensor  voltage  has  become  abnormal,  water,  snow  mud,  etc.,  may  be
built up in the vicinity of the sensor area of bumper (



P. 431). 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.

■

When  “Blind  Spot  Monitor  System  Malfunction  Visit  Your  Dealer”  is
shown on the multi-information display

There  may  be  a  sensor  malfunction  or  misaligned.  Have  the  vehicle
inspected by your Toyota dealer.

■

Certifications for the Blind Spot Monitor



For vehicles sold in the U.S.A. and Hawaii

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

For vehicles sold in Canada

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WARNING

■

To ensure the system can operate properly

●

Keep the sensor and its surrounding area on the bumper clean at all times.

●

Do not subject a sensor or its surrounding area on the rear bumper to a
strong impact.
If a sensor is moved even slightly off position, the system may malfunction
and vehicles may not be detected correctly.
In  the  following  situations,  have  your  vehicle  inspected  by  your  Toyota
dealer.
• A sensor or its surrounding area is subject to a strong impact.
• If  the  surrounding  area  of  a  sensor  is  scratched  or  dented,  or  part  of

them has become disconnected.

●

Do not disassemble the sensor.

●

Do not attach accessories or stickers to the sensor or surrounding area on
the bumper.

●

Do not modify the sensor or surrounding area on the bumper.

●

Do not paint the rear bumper any color other than an official Toyota color.

One  Blind  Spot  Monitor  sensor  is
installed  inside  the  left  and  right  side  of
the  vehicle  rear  bumper  respectively.
Observe the following to ensure the Blind
Spot Monitor can function correctly.

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The Blind Spot Monitor function uses radar sensors to detect vehicles
that are traveling in an adjacent lane in the area that is not reflected in
the outside rear view mirror (the blind spot), and advises the driver of
the vehicle’s existence via the outside rear view mirror indicator.

The areas that vehicles can be detected in are outlined below.
The range of the detection area extends to:

Approximately  11.5  ft.  (3.5  m)
from the side of the vehicle

The  first  1.6  ft.  (0.5  m)  from  the
side  of  the  vehicle  is  not  in  the
detection area

Approximately 9.8 ft. (3 m) from
the rear bumper
Approximately 3.3 ft. (1 m) for-
ward of the rear bumper

The Blind Spot Monitor function

The Blind Spot Monitor function detection areas

IO55PH029

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