TOYOTA PRIUS 2021 (in English) Owner's Guide
Manufacturer: TOYOTA, Model Year: 2021, Model line: PRIUS, Model: TOYOTA PRIUS 2021Pages: 64, PDF Size: 6.06 MB
Page 31 of 64

29
OVERVIEW
FEATURES & OPERATIONS
TOYOTA SAFETY SENSE
SAFETY & EMERGENCY FEATURES
The VSC OFF switch can be used to help free a stuck vehicle in surroundings like
mud, dirt or snow. While the vehicle is stopped, press switch to disable the TRAC
system.
To disable both VSC and TRAC systems, press and hold the switch for at least 3
seconds.
Refer to the Owner’s Manual for limitations and more details.
Push
Vehicle Stability Control (VSC)/
TRAC OFF switch
Assist mode will be canceled or stopped in the following cases.
Assist control is canceled when
• The system temperature preservation function operates
• There is a system malfunction
• System determined that the parking environment is not suitable for assist to
continue
When assist control is canceled, firmly grasp the steering wheel, depress the brake
pedal and stop the vehicle.
Start again from the beginning, as the system will already be canceled. When
continuing to park manually, operate the steering wheel as you normally would.
Assist control is stopped when
• The steering wheel is operated
• The vehicle speed exceeds 4 mph (7 km/h) during assist control
• The Front and Rear Parking Assist with Automated Braking** operates
When assist control is stopped, it can be resumed by following the guidance shown
on the screen.
The Intelligent Parking Assist (IPA) system requires driver brake control. Always
look around outside the vehicle and use mirrors to confirm clearance.
* Refer to section S-APGS (Simple Advanced Parking Guidance System) in the
Owner’s Manual for limitations and more details.
** Refer to section PKSB (Parking Support Brake function) in the Owner’s Manual
for limitations and more details.
CANCELING OF STOPPING ASSIST MODE
126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 29126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 296/17/20 10:09 AM6/17/20 10:09 AM
Page 32 of 64

30
FEATURES & OPERATIONS
Blind Spot Monitor with Rear Cross Traffic
Alert (BSM w/RCTA) (if equipped)
The Blind Spot Monitor is a system that has two 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)
The system is designed to use radar sensors to detect vehicles traveling in the
Prius’s blind spot. If a vehicle is detected, the driver will be alerted via the outside
rear view side mirror indicators.
Rear Cross Traffic Alert function:
While in reverse, when a vehicle approaching from the right or left rear of the
Prius is detected, the outside rear view mirror indicators will flash. Also, the RCTA
detection screen will be shown on the display and the RCTA buzzer will sound.
IndicatorIndicatorBSM on/off screen and indicator
Buzzer (RCTA only)
RCTA detection screen (RCTA only)
(1) Press “ ” switches and select “” from the Multi-Information Display (MID).
(2) Press “ ” switches and select “” and then press “.” The setting
screen is displayed.
(3) Press “ ” switches and select the “On/Off” setting function and then press
“.”
(4) Press “” to go back to the menu.
Note: 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.)
Refer to the Owner’s Manual for limitations and more details on this system before
attempting to use it.
SYSTEM ON/OFF
126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 30126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 306/17/20 10:09 AM6/17/20 10:09 AM
Page 33 of 64

31
OVERVIEW
FEATURES
& OPERATIONS
TOYOTA
SAFETY
SENSE
SAFETY
& EMERGENCY
FEATURES
Rear view monitor system
The rear view monitor system displays an image of the view from the bumper of
the rear area of the vehicle. The camera for the rear view monitor system is located
above the license plate.
To adjust the image on the rear view monitor screen, press the “MENU” button and
select “Display”. Select “Camera” to adjust the screen contrast and brightness.
Refer to the Navigation and Multimedia System Owner’s Manual for limitations and
more details on this system.
Clock
To adjust the time, use meter control switches to go to the screen on the MID.
Then, select the option to access the clock setting.
Multi-Information Display (MID)Clock display
Meter control switches
To adjust the time, press to select . Then select to access
General Settings screen. From here, select “System Time” to access clock setting.
Vehicles equipped with 11.6-in display
126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 31126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 316/17/20 10:09 AM6/17/20 10:09 AM
Page 34 of 64

32
TOYOTA SAFETY SENSE™
Toyota Safety Sense™ 2.0 (TSS 2.0) is a set of active safety technologies designed
to help mitigate or prevent collisions across a wide range of traffic situations, in
certain conditions. TSS 2.0 is designed to help support the driver’s awareness,
decision making and vehicle operation contributing to a safe driving experience.
Refer to the Owner’s Manual for operation, setting adjustments, limitations and
more details to understand these functions and complete safety precautions. For
more information, please go to http://www.toyota.com/safety-sense.
Quick overview-Toyota Safety Sense™ 2.0
Automatic High Beams (AHB)AHB is designed to detect the headlights of oncoming vehicles and the tail lights of preceding vehicles and switch between high beams and low beams as appropriate.
Road Sign Assist (RSA)RSA is designed to recognize specific road signs using the forward-facing camera to provide information to the driver via the display.
Pre-Collision System with Pedestrian Detection (PCS w/PD)PCS w/PD is designed to provide alert, mitigation, and/or avoidance support in certain conditions, when the system detects a potential collision with a preceding vehicle is likely to occur.
The advanced grille-mounted radar system is designed to work with
the forward-facing camera to help recognize a preceding pedestrian or
bicyclist, and provide an alert, mitigation and/or avoidance support in
certain conditions.
Full-Speed Range Dynamic Radar Cruise Control (DRCC)Full-Speed Range DRCC is designed to help maintain a pre-set distance to a preceding vehicle when the preceding vehicle is traveling at a lower speed. The minimum set speed is approximately 20 MPH, but once activated, the operating speed range is 0-110 MPH.
Lane Tracing Assist (LTA)LTA is designed to help keep the vehicle in the center of a lane by assisting the driver in steering control when using Full-Speed Range DRCC.
Lane Departure Alert with Steering Assist (LDA w/SA)LDA w/SA is designed to provide notification when the system detects an unintended lane departure.
The Steering Assist function is designed to provide small corrective steering inputs to the steering wheel for a short period of time to help keep the vehicle in its lane. The Sway Warning function is designed to detect vehicle swaying (based on the vehicle location and steering wheel operation) and alert the driver with an audio and visual alert, urging them to take a break.
126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 32126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 326/17/20 10:09 AM6/17/20 10:09 AM
Page 35 of 64

33
Sensors
TSS 2.0 combines a forward-facing camera mounted in front of the inside rear view
mirror and a grille-mounted radar mounted in the front grille. These sensors support the
driver assist systems.
The Pre-Collision System uses a grille-mounted radar and forward-facing camera to
help detect a vehicle or pedestrian or bicyclist in front of your vehicle.
As there is a limit to the degree of recognition accuracy and control performance that this system can provide, do not overly rely on this system. This system will not prevent collisions or lessen collision damage or injury in every situation. Do not use PCS instead of normal braking operations under any circumstances. Do not attempt to test the operation of the Pre-Collision System yourself, as the system may not operate or engage, possibly leading to an accident. In some situations, such as when driving in inclement weather such as heavy rain, fog, snow or a sandstorm or while driving on a curve and for a few seconds after driving on a curve, a vehicle or pedestrian or bicyclist may not be detected by the grille-mounted radar and forward-facing camera, preventing the system from operating or engaging properly.
Refer to the Toyota Owner’s Manual for a list of additional situations in which the system may not operate properly.
Pre-Collision WarningWhen the system determines that the possibility of a frontal collision is high, a buzzer will sound and a warning message will be displayed on the Multi-Information Display (MID) to urge the driver to take evasive action.
Pre-Collision Brake AssistIf the driver notices the hazard and brakes, the system may provide additional braking force using Brake Assist. This system may prime the brakes and may apply greater braking force in relation to how strongly the brake pedal is depressed.
Pre-Collision System with
Pedestrian Detection (PCS w/PD)
OVERVIEW
FEATURES & OPERATIONS
TOYOTA SAFETY SENSE
SAFETY & EMERGENCY FEATURES
Forward-facing camera
Grille-mounted radar
126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 33126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 336/17/20 10:09 AM6/17/20 10:09 AM
Page 36 of 64

34
As part of the Pre-Collision System, this function is also designed to first provide an alert and then automatic braking if needed.
Refer to the Toyota Owner’s Manual for additional limitations and information.
PRE-COLLISION SYSTEM (CONTINUED)
TOYOTA SAFETY SENSE™
Refer to the Toyota Owner’s Manual for additional information on PCS operation,
settings adjustments, limitations, and precautions before attempting to use it.
Pre-Collision BrakingIf the driver does not brake in a set time and the system determines that the possibility of a frontal collision with a preceding vehicle is extremely high, the system may automatically apply the brakes, reducing speed in order to help the driver reduce the impact and in certain cases avoid the collision.
Monocular camera sensor
Millimeterwave radar
PCS PEDESTRIAN DETECTION
Under certain conditions, the PCS system included with the TSS 2.0 package may also help to detect a pedestrian or bicyclist in front of your vehicle using the
forward-facing camera and front grille-mounted radar. The forward-facing camera
of PCS detects a potential pedestrian or bicyclist based on size, profile, and motion
of the detected pedestrian or bicyclist. However, a pedestrian or bicyclist may not be detected depending on the conditions, including the surrounding brightness
and the motion, posture, size, and angle of the potential detected pedestrian or
bicyclist, preventing the system from operating or engaging.
126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 34126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 346/17/20 10:09 AM6/17/20 10:09 AM
Page 37 of 64

35
CHANGING PRE-COLLISION ALERT TIMING
DISABLING PRE-COLLISION SYSTEM (PCS)
(1) Press “ ” switches and select “” from the Multi-Information Display (MID).
(2) Press “ ” switches and select “” and then press “.” The setting
screen is displayed.
(3) Press “” to select the desired setting. Each time it is pressed, the response to
the PCS warning timing changes as shown above.
(4) Press “” to go back to the menu.
Note: PCS is enabled each time the engine switch is turned to Ignition On.
The system can be disabled/enabled and the alert timing of the system can be
changed. (Alert timing only, brake operation remains the same).
(1) Press “ ” switches and select “” from the Multi-Information Display (MID).
(2) Press “ ” switches and select “” and then press “.” The setting
screen is displayed.
(3) Press “” to select the desired setting (ON/OFF).
(4) Press “” to go back to the menu.
Note: The system is enabled each time the power switch is turned to ON mode.
Refer to the Toyota Owner’s Manual for additional information on PCS operation,
settings adjustments, limitations, and precautions before attempting to use it.
OVERVIEW
FEATURES
& OPERATIONS
TOYOTA
SAFETY
SENSE
SAFETY
& EMERGENCY
FEATURES
Far
Middle(default)
Near
126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 35126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 356/17/20 10:09 AM6/17/20 10:09 AM
Page 38 of 64

36
TOYOTA SAFETY SENSE™
LDA in TSS 2.0 uses a forward-facing camera designed to detect visible white and
yellow lane markers or road edge in front of the vehicle and the vehicle’s position
on the road. If the system determines that the vehicle is starting to unintentionally
deviate from its lane, the system alerts the driver with an audio and visual alert.
When the alerts occur, the driver must check the surrounding road situation and
carefully operate the steering wheel to move the vehicle back to the center part of
their lane.
LDA is designed to function at speeds of approximately 32 mph (50 km/h) or higher
on relatively straight roadways.
In addition to the alert function, LDA w/SA also features a steering assist
function. When enabled, if the system determines that the vehicle is on a path to
unintentionally depart from its lane, the system may provide small corrective steering
inputs to the steering wheel for a short period of time to help keep the vehicle in its
lane.
If the vehicle repeatedly deviates from the lane, the vehicle drifts within the lane due
to inattention, or the driver abruptly operates the steering wheel after an inattentive
period, when enabled, the vehicle sway warning function alerts the driver with an
audio and visual alert, urging them to take a break.
Lane Departure Alert with Steering Assist
(LDA w/SA)
TURNING THE LDA SYSTEM ON/OFF
Press the LDA switch to turn the LDA system on. Depress again to turn it off.
Note: Operation of the LDA system and setting adjustments continues in the
same condition regardless of Ignition cycle until changed by the driver or the
system is reset.
Refer to the Toyota Owner’s Manual for additional information on LDA operation,
settings adjustments, limitations, and precautions before attempting to use it.
126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 36126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 366/17/20 10:09 AM6/17/20 10:09 AM
Page 39 of 64

37
LANE DEPARTURE ALERT
LDA function display
Operation display of steering wheel operation support
LDA indicator
Steering control indicator and operation display (steering assist function)
Lane markers/road edge
(2)(1)
Lane Departure Alert (LDA) indicator flashes orange when operating.
The LDA function “” displays when the Multi-Information Display (MID) is
switched to the driving assist system information screen.
(1) The system displays solid white lines on the LDA indicator when visible lane
markers or the road are detected. A side flashes orange to alert the driver when the
vehicle deviates from its lane.
(2) The system displays outlines on the LDA indicator when lane markers or the road
are not detected or the function is temporarily canceled.
Note: When operation conditions are no longer met, a function may be
temporarily canceled. However, when the operation conditions are met again,
operation of the function is automatically restored. For example, LDA may not
function on the side(s) where white/yellow lines are not detectable.
Refer to the Toyota Owner’s Manual for additional information on LDA operation,
settings adjustments, limitations, and precautions before attempting to use it.
OVERVIEW
FEATURES
& OPERATIONS
TOYOTA
SAFETY
SENSE
SAFETY
& EMERGENCY
FEATURES
126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 37126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 376/17/20 10:09 AM6/17/20 10:09 AM
Page 40 of 64

38
ADJUSTING LDA ALERT SENSITIVITY
DISABLING STEERING ASSIST
The driver can adjust the sensitivity of the LDA (warning) function from the
Multi-Information Display (MID) customization screen.
High - Is designed to warn approximately before the front
tire crosses the lane marker.
Normal - Is designed to warn approximately when the front
tire crosses the lane marker.
(1) Press “ ” switches and select “” from the Multi-Information Display (MID).
(2) Press “ ” switches and select the “” and then press “.” The setting
screen is displayed.
(3) Press “” to select the desired setting (High/Normal).
(4) Press “” to go back to the menu.
(1) Press “ ” switches and select “” from the Multi-Information Display (MID).
(2) Press “ ” switches and select the “” and then press “.” The setting
screen is displayed.
(3) Press “” to select the desired setting (ON/OFF).
(4) Press “” to go back to the menu.
Note: Operation of the LDA system and setting adjustments continues in the
same condition regardless of Ignition cycle until changed by the driver or the
system is reset.
TOYOTA SAFETY SENSE™
SWAY WARNING SYSTEM
SWS is a function of LDA and is designed to detect swaying based on the vehicle
location in the lane and the driver’s steering wheel operation. To help prevent
swaying, the system alerts the driver using a buzzer sound and a warning displays
in the MID.
Continuous lane deviations from swaying.
Gentle swaying from driver’sinattentiveness.
Acute steering wheel operation after the number of operations decrease due to driver’s inattentiveness.
126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 38126899_MY21_Prius_QRG_V2_ML_0614_R1.indd 386/17/20 10:09 AM6/17/20 10:09 AM