Toyota Prius Plug-in Hybrid (2017 year). Manual - part 26
5-5. Using the driving support systems
425
■ Conditions under which the Blind Spot Monitor function may not func-
tion correctly
● The Blind Spot Monitor function may not detect vehicles correctly in the fol-
lowing situations:
• When the sensor is misaligned due to a strong impact to the sensor or its
surrounding area
• When mud, snow, ice, a sticker, etc. is covering the sensor or surround-
ing area on the rear bumper
• When driving on a road surface that is wet with standing water during bad
weather, such as heavy rain, snow, or fog
• When multiple vehicles are approaching with only a small gap between
each vehicle
• When the distance between your vehicle and a following vehicle is short
• When there is a significant difference in speed between your vehicle and
the vehicle that enters the detection area
• When the difference in speed between your vehicle and another vehicle
is changing
• When a vehicle enters a detection area traveling at about the same
speed as your vehicle
• As your vehicle starts from a stop, a vehicle remains in the detection area
• When driving up and down consecutive steep inclines, such as hills, dips
in the road, etc.
5
• When driving on roads with sharp bends, consecutive curves, or uneven
surfaces
• When vehicle lanes are wide, or when driving on the edge of a lane, and
the vehicle in an adjacent lane is far away from your vehicle
• When a bicycle carrier or other accessory is installed to the rear of the
vehicle
• When there is a significant difference in height between your vehicle and
the vehicle that enters the detection area
• Immediately after the Blind Spot Monitor main switch is turned on
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5-5. Using the driving support systems
●Instances of the Blind Spot Monitor function unnecessarily detecting a vehi-
cle and/or object may increase in the following situations:
• When the sensor is misaligned due to a strong impact to the sensor or its
surrounding area
• When the distance between your vehicle and a guardrail, wall, etc. that
enters the detection area is short
• When driving up and down consecutive steep inclines, such as hills, dips
in the road, etc.
• When vehicle lanes are narrow, or when driving on the edge of a lane,
and a vehicle traveling in a lane other than the adjacent lanes enters the
detection area
• When driving on roads with sharp bends, consecutive curves, or uneven
surfaces
• When the tires are slipping or spinning
• When the distance between your vehicle and a following vehicle is short
• When a bicycle carrier or other accessory is installed to the rear of the
vehicle
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The Rear Crossing Traffic Alert function
The Rear Crossing Traffic Alert functions when your vehicle is in
reverse. It can detect other vehicles approaching from the right or left
rear of the vehicle. It uses radar sensors to alert the driver of the other
vehicle’s existence through flashing the outside rear view mirror indi-
cators and sounding a buzzer.
IO55PH087
1
Approaching vehicles
2
Detection areas
WARNING
5
■ Cautions regarding the use of the system
The driver is solely responsible for safe driving. Always drive safely, taking
care to observe your surroundings.
The Rear Crossing Traffic Alert function is only an assist and is not a
replacement for careful driving. The driver must be careful when backing
up, even when using the Rear Crossing Traffic Alert function. The driver’s
own visual confirmation of behind you and your vehicle is necessary and be
sure there are no pedestrians, other vehicles etc. before backing up. Failure
to do so could cause death or serious injury.
According to conditions, the system may not function correctly. Therefore
the driver’s own visual confirmation of safety is necessary.
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5-5. Using the driving support systems
The Rear Crossing Traffic Alert function detection areas
The areas that vehicles can be detected in are outlined below.
IO55PH088
To give the driver a more consistent time to react, the buzzer can alert
for faster vehicles from farther away.
Example:
1
Approximate
Approaching vehicle
Speed
alert distance
Fast
28 km/h (18 mph)
20 m (65 ft.)
Slow
8 km/h (5 mph)
5.5 m (18 ft.)
■ The Rear Crossing Traffic Alert function is operational when
●The BSM system is set to on. (P. 242)
● The shift position is in R.
● Vehicle speed is less than approximately 8 km/h (5 mph).
● Approaching vehicle speed is between approximately 8 km/h (5 mph) and
28 km/h (18 mph).
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■ Conditions under which the Rear Crossing Traffic Alert function will not
detect a vehicle
The Rear Crossing Traffic Alert function is not designed to detect the follow-
ing types of vehicles and/or objects:
● Vehicles approaching from directly behind
● Vehicles backing up in a parking space next to your vehicle
● Vehicles that the sensors cannot detect
due to obstructions
IO55PH089
● Guardrails, walls, signs, parked vehicles and similar stationary objects*
●Small motorcycles, bicycles, pedestrians, etc.*
● Vehicles moving away from your vehicle
● Vehicles approaching from the parking spaces next to your vehicle*
*: Depending on the conditions, detection of a vehicle and/or object may
5
occur.
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5-5. Using the driving support systems
■ Conditions under which the Rear Crossing Traffic Alert function may not
function correctly
●The Rear Crossing Traffic Alert function may not detect vehicles correctly in
the following situations:
• When the sensor is misaligned due to a strong impact to the sensor or its
surrounding area
• When mud, snow, ice, a sticker, etc. is covering the sensor or surround-
ing area on the rear bumper
• When driving on a road surface that is wet with standing water during bad
weather, such as heavy rain, snow, or fog
• When multiple vehicles are approaching with only a small gap between
each vehicle
• When a vehicle is approaching at high speed
• When backing up on a slope with a
sharp change in grade
• When backing out of a shallow angle
parking spot
• Immediately after the Blind Spot Monitor main switch is turned on
• Immediately after the hybrid system is started with the Blind Spot Monitor
main switch on
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• When the sensors cannot detect a
vehicle due to obstructions
IO55PH089
● Instances of the Rear Crossing Traffic Alert function unnecessarily detecting
a vehicle and/or object may increase in the following situations:
• When a vehicle passes by the side of your vehicle
• When the parking space faces a
street and vehicles are being driven
on the street
• When the distance between your vehicle and metal objects, such as a
5
guardrail, wall, sign, or parked vehicle, which may reflect electrical waves
toward the rear of the vehicle, is short
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5-5. Using the driving support systems
Toyota parking assist-sensor
The distance from your vehicle to nearby obstacles when paral-
lel parking or maneuvering into a garage is measured by the
sensors and communicated via the displays and a buzzer.
Always check the surrounding area when using this system.
Types of sensors
1
Front corner sensors
2
Front center sensors
3
Rear corner sensors
4
Rear center sensors
5
Front side sensors
6
Rear side sensors
Turning the Toyota parking assist-sensor on/off
The Toyota parking assist-sensor
can be enabled/disabled on the
screen
(P. 242) of the
multi-information display.
When on is selected, Toyota park-
ing assist-sensor indicator will
come on.
Once off is selected, the Toyota parking assist-sensor will not return to on
until it is turned to on by the
screen of multi-information display again.
(The system does not automatically return to on even when the hybrid sys-
tem is restarted.)
: If equipped
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Display
When the sensors detect an obstacle, the following displays inform
the driver of the position and distance to the obstacle.
■ Multi-information display
1
Front center sensor opera-
tion
2
Front corner sensor opera-
tion
3
Front side sensor operation
4
Rear side sensor operation
5
Rear corner sensor operation
6
Rear center sensor operation
• The operation display is gray when the sensors are operating.
• The front side sensor operation displays and rear side sensor operation
displays are not shown until a scan of the side areas is completed.
■ Audio system screen
5
When the Toyota parking assist
monitor is displayed:
A simplified image is displayed
on the right upper corner of the
audio system screen when an
obstacle is detected.
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5-5. Using the driving support systems
Sensor detection display, obstacle distance
■ Distance display
Sensors that detect an obstacle will illuminate continuously or blink.
Approximate distance to obstacle
Insert display
(Using
Front corner,
Rear corner,
Normal
Intelligent
display*1
front center and
rear center and
Parking
front side
rear side
Assist)*1
sensors
sensors
Far
6
150 cm (4.9 ft.)
1
100 cm (3.3 ft.)
to 60 cm
to 60 cm (2.0 ft)
(2.0 ft.)
(continuous)
(blinking
slowly)
1
60 cm (2.0 ft.) to
4
100 cm (3.3 ft.)
45 cm (1.5 ft)
to 70 cm (2.3 ft.)
2
60 cm (2.0 ft.)
5
60 cm (2.0 ft.)
to 45 cm
to 45 cm
(1.5 ft.)
(1.5 ft.)
3
100 cm (3.3 ft.)
6
60 cm (2.0 ft.) to
(continuous)
(blinking)
to 70 cm (2.3 ft.)
45 cm (1.5 ft)
1
45 cm (1.5 ft.) to
4
70 cm (2.3 ft.) to
35 cm (1.2 ft.)
30 cm (1.0 ft.)
2
45 cm (1.5 ft.)
5
45 cm (1.5 ft.)
to 35 cm
to 35 cm
(1.2 ft.)
(1.2 ft.)
3
70 cm (2.3 ft.) to
6
45 cm (1.5 ft.) to
(continuous)
(blinking
30 cm (1.0 ft.)
35 cm (1.2 ft.)
rapidly)
1
Less than
4
Less than
35 cm (1.2 ft.)
30 cm (1.0 ft.)
2
Less than
5
Less than
35 cm (1.2 ft.)
35 cm (1.2 ft.)
3
Less than
6
Less than
(blinking*2 or
(continuous)
Near
30 cm (1.0 ft.)
35 cm (1.2 ft.)
continuous*3)
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1
Front center sensors
4
Rear side sensors
2
Front corner sensors
5
Rear corner sensors
3
Front side sensors
6
Rear center sensors
*1: The images may differ from those shown in the illustrations depending on
the detection status. (P. 433)
*2: Multi-information display
*3: Audio system screen
5
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5-5. Using the driving support systems
Buzzer
When an obstacle is detected, the buzzer sounds.
● As the obstacle is approached, the buzzer sounds more rapidly.
When the obstacle is extremely close, the buzzer switches from
sounding intermittently (short beeps) to continuously (a long beep).
• Distance to obstacle detected by front corner sensor is approxi-
mately 35 cm (1.2 ft.) or less
• Distance to obstacle detected by front side sensor or rear side
sensor is approximately 30 cm (1.0 ft.) or less
• Distance to obstacle detected by front sensor is approximately
35 cm (1.2 ft.) or less
• Distance to obstacle detected by rear corner sensor is approxi-
mately 35 cm (1.2 ft.) or less
• Distance to obstacle detected by back sensor is approximately
35 cm (1.2 ft.) or less
● When an obstacle is detected by multiple sensors simultaneously,
the buzzer sounds according to the distance to the closest obsta-
cle.
● When obstacles are simultaneously detected to the front and rear
of the vehicle, separate buzzers sound patterns according to the
distance to each obstacle.
The volume and timing of the buzzer can be changed. (P. 708)
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Detection range of the sensors
1
Approximately 100 cm (3.3 ft.)
2
Approximately 150 cm (4.9 ft.)
3
Approximately 60 cm (2.0 ft.)
4
Approximately 100 cm (3.3 ft.)
• The detection range is shown in
the illustration to the right. How-
ever, the sensor will not detect
the obstacle if it is too close.
• For details regarding obstacle
detection in the side areas.
(P. 438)
• The distance at which an obsta-
cle can be detected and whether
it can be detected depends on
the shape and condition of the
obstacle.
The obstacle detection range can be changed. (P. 708)
5
■ Operation conditions
The power switch is turned on
● Front corner sensors:
• Shift position is not in P
• Vehicle speed is approximately 10 km/h (6 mph) or less
● Front side sensors/rear side sensors:
• Shift position is not in P
• Vehicle speed is approximately 10 km/h (6 mph) or less
• Steering wheel is turned approximately 90 or more
● Front center sensors:
• Shift position is not in P or R
• Vehicle speed is approximately 10 km/h (6 mph) or less
● Rear corner sensors/rear center sensors:
Shift position is in R
■ Toyota parking assist-sensor pop-up display
P. 460
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5-5. Using the driving support systems
■Sensor detection information
● The sensor’s detection areas are limited to the areas around the vehicle’s
bumper.
● Depending on the shape of the obstacle and other factors, the detection dis-
tance may shorten, or detection may be impossible.
● Obstacles may not be detected if they are too close to the sensor.
● There will be a short delay between obstacle detection and display. Even
when traveling at a low speed, if you come too close to an obstacle before
the display and buzzer activate, the display and buzzer may not activate at
all.
● Thin posts or objects lower than the sensor may not be detected when
approached, even if they have been detected once.
●It might be difficult to hear beeps due to the volume of audio system or air
flow noise of the air conditioning system.
■ Obstacle warning function
When an obstacle in the side areas is within the vehicle course while the
vehicle is moving forward or backward, this function inform the driver by the
display and the buzzer. (P. 434, 436)
1
Obstacle
2
Calculated vehicle course
■ Obstacle detection in side areas
● Obstacles in the side areas are detected while driving by scanning the side
areas with the side sensors. Recognized obstacles are retained in memory
for up to approximately 2 minutes.
● Obstacles may not be detected in the side areas until the scan completes.
After the power switch is turned on, scanning completes after driving the
vehicle for a short period of time.
● When an obstacle such as another vehicle, pedestrian or animal is detected
by the side sensors, the obstacle may continue to be detected even after it
has left the side sensor detection area.
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■ If “Clean Parking Assist Sensor” is displayed on the multi-information
display
A sensor may be dirty or covered with snow or ice. In such cases, if it is
removed from the sensor, the system should return to normal.
Also, due to the sensor being frozen at low temperatures, a malfunction dis-
play may appear or an obstacle may not be detected. If the sensor thaws out,
the system should return to normal.
■ If “Parking Assist Malfunction” is displayed on the multi-information dis-
play
Depending on the malfunction of the sensor, the device may not be working
normally. Have the vehicle inspected by any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
■ Customization
Setting of buzzer volume can be changed.
(Customizable features: P. 708)
WARNING
■ When using Toyota parking assist-sensor
Observe the following precautions to avoid an unexpected accident.
●Do not exceed the speed limit of 10 km/h (6 mph).
5
●The sensors’ detection areas and reaction times are limited. When moving
forward or reversing, check the areas surrounding the vehicle (especially
the sides of the vehicle) for safety, and drive slowly, using the brake to
control the vehicle’s speed.
●Do not install accessories within the sensors’ detection areas.
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WARNING
■ Sensors
Certain vehicle conditions and the surrounding environment may affect the
ability of the sensor to correctly detect obstacles. Particular instances where
this may occur are listed below.
●There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve
this problem.)
●The sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is frozen, the screen may show an
abnormal display, or obstacles may not be detected.
●The sensor is covered in any way.
● In harsh sunlight or intense cold weather
●On an extremely bumpy road, on an incline, on gravel, or on grass
●The vicinity of the vehicle is noisy due to vehicle horns, motorcycle
engines, air brakes of large vehicles, or other loud noises producing ultra-
sonic waves.
●The sensor is splashed with water or drenched with heavy rain.
●The sensor is drenched with water on a flooded road.
●The vehicle is leaning considerably to one side.
●The vehicle is equipped with a fender pole or wireless antenna.
●The vehicle is approaching a tall or curved curb.
●The detection range is reduced due to an object such as a sign.
●The area directly under the bumpers is not detected.
● If obstacles draw too close to the sensor.
●The bumper or sensor receives a strong impact.
● A non-genuine Toyota suspension (lowered suspension etc.) is installed.
●There is another vehicle equipped with parking assist sensors in the vicin-
ity.
● Towing eyelets are installed.
● A backlit license plate is installed.
In addition to the examples above, depending on the shape and condition of
obstacles, detection may not be possible, or the detection range may be
shortened.
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WARNING
■ Side sensors
In the following situations, the Toyota parking assist-sensor may not operate
normally and may result in an unexpected accident. Drive carefully.
●Obstacles may not be detected in the side areas until the vehicle is driven
for a short time and a scan of the side areas is completed. (P. 438)
● Even after the scan of the side areas is completed, obstacles such as
other vehicles, people or animals that approach from the sides cannot be
detected.
● Even after the scan of the side areas is completed, obstacles may not be
detected depending on the surrounding situation of the vehicle.
At that time, the side sensor operation displays (P. 433) temporary turn
off.
■ Obstacles which may not be properly detected
●The shape of the obstacle may prevent the sensor from detecting it. Pay
particular attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
5
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of
your vehicle
• People may not be detected if they are wearing certain types of cloth-
ing.
• Moving objects such as people or animals
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