2020 TOYOTA PRIUS PRIME parking sensors

472
PRIUS PRIME_OM_OM47C77U_(U)
5-5. Using the driving support systems
Assume an ordinary driving posture, rest your hands lightly on
the steering wheel without applying any force, directly confirm
the safety of the area to the front and around the vehicle and
slowly proceed forward while adjusting your speed by depressing
the brake pedal.
When the vehicle has nearly
reached the take-off point, a
high-pitched beep is emitted
and assist control finishes.
From there, grasp the steer-
ing wheel and proceed for-
ward.
■Exit parallel parking assist mode
●During assist control, if the driver determines that they are at a position
where take-off is possible and operates the steering wheel, assist control is
stopped at that position.
● Assist control cannot be used if there are no parked vehicles a head, or if the
gap between the front of your vehicle and the vehicle parked ahead is too
large.
● When using the exit parallel parking assist mode, the assist mo de may not
be able to operate depending on the surrounding environment.
13
14
NOTICE
● The detection range of the sensors ( P. 437) is limited. Directly confirm
the safety of your surroundings, and if there is a possibility of a contact
accident, stop the vehicle by depressing the brake pedal.
● It may not be possible to detect objects that are low to the ground. Directly
confirm the safety of your surroundings and, if it seems the vehicle may
make contact with an obstacle, stop the vehicle by depressing the brake
pedal.
● When departing for a position from which you can take off, directly confirm
the safety of your surroundings.

PRIUS PRIME_OM_OM47C77U_(U)
4775-5. Using the driving support systems
5
Driving
Assume an ordinary posture for backing up, rest your hands
lightly on the steering wheel without applying any force, direc tly
confirm the safety of the area to the rear and around the vehic le
slowly back up while adjusting your speed by depressing the
brake pedal.
Depending on the condition of the parking space, steps to may
need to be repeated.
When the vehicle is almost entire ly within the target parking spot,
a high-pitched beep is emitted and the stop display is shown on
the display ( P. 459), stop the vehicle.
This completes the back-in parking assist mode.
● For safety, the buzzer sounds slightly before the vehicle is
completely entered within the target parking spot. Further-
more, at that point, system operation will also finish. Firmly
hold the steering wheel and slowly back up while adjusting
your speed by depressing the brake pedal to reach the desired
parking spot.
● Be sure to back up while checking the area to the front and
rear of the vehicle direct ly and by using the mirrors.
■Back-in parking assist m ode operating conditions
● In order to operate the function correctly, drive slowly (at a speed at which
the vehicle can be quickly stopped).
● In order to operate the function correctly, drive slowly (at a speed at which
the vehicle can be quickly stopped). Come to a full stop so tha t the center of
the parking space is nearly perpendicular to the vehicle, and t hen operate
the S-APGS switch.
● The function cannot be used when the vehicle speed is approxima tely
19 mph (30 km/h) or higher.
● The front side sensors and rear side sensors are used to detect parked
vehicles and determine the parking spot. Therefore, when detection is not
possible ( P. 488), guidance is not issued.
● If there are no parked vehicles, the parking spot cannot be det ermined.
Therefore, the back-in parking assist mode cannot be operated.
● If unable to detect the environment surrounding the parking space, the
back-in parking assist mode may not be able to operate.
11
611
12

478
PRIUS PRIME_OM_OM47C77U_(U)
5-5. Using the driving support systems
■Tips for using the back-in parking assist mode ●Depending on the condition of the park-
ing space, if there is not enough space
in front of the vehicle required to perform
the parking operation, the target parking
spot may not be reachable.
Intended parking spot
Wall
● Leave a gap of approximately 3.3 ft. (1
m) from any parked vehicles and
approach the target parking spot. If the
gap between your vehicle and any
parked vehicles is too large, the front
side sensors and rear side sensors may
not be able to detect the parked vehi-
cles.
● Stop so that the center of the target
parking spot is perpendicular to the vehi-
cle. Furthermore, only push the S-APGS
switch when the vehicle is at a complete
stop.
NOTICE
●If the road surface has any dips or inclines, the target parking spot cannot
be correctly set. Therefore, the vehicle may be parked at an angle or may
deviate from the parking spot. In these cases, do not use the back-in park-
ing assist mode.
● When parking in a narrow space, the vehicle will come close to adjacent
vehicles. If it seems the vehicle may make contact, stop the ve hicle by
depressing the brake pedal.
● It may not be possible to detect objects that are low to the ground. Directly
confirm the safety of your surroundings and, if it seems the vehicle may
make contact with an obstacle, stop the vehicle by depressing the brake
pedal.
● Depending on the surrounding environment, such as other parked vehi-
cles, the vehicle may be parked at an angle or may deviate from the park-
ing spot. Manually adjust vehicle alignment as necessary.
1
2
3.3 ft.
(1 m)

484
PRIUS PRIME_OM_OM47C77U_(U)
5-5. Using the driving support systems
■Sensors
Detect the vehicle to help determine the parking spot.
Front side sensors
Rear side sensors
Precautions during use
1
2
● The sensor detection range when using
back-in parking assist mode
Intended parking spot
● The sensor detection range when using
parallel parking assist mode
Intended parking spot
1
1

PRIUS PRIME_OM_OM47C77U_(U)
4875-5. Using the driving support systems
5
Driving
WARNING
●Do not use the system in the following situations, as the syste m may be
unable to correctly assist you in reaching the target parking s pot and may
lead to an unexpected accident.
• In an area that is not a parking lot
• A parking lot that is not paved and has no parking space lines , such as
a sand or gravel parking lot
• A parking lot that has a slope or undulations in the road
• A frozen, snow-covered or slippery road
• The asphalt is melting due to hot weather
• There is an obstacle between the vehicle and the target parking spot
• Using tire chains
● Do not use tire other than that provided by the manufacturer. T he system
may not operate properly. When replacing tires, contact your Toyota
dealer.
● The system may not be able position the vehicle in the set location in the
following situations.
• The tires are extremely worn or the tire pressure is low
• The vehicle is carrying very heavy load
• The vehicle is tilted due to having luggage, etc. located on one side of
the vehicle
• There are road heaters installed in the parking lot to prevent the road
surface from freezing.
In any other situations when the set position and vehicle position greatly
differ, have the vehicle inspected by your Toyota dealer.
● Make sure to observe the following precautions regarding the exit parallel
parking assist mode.
Exit parallel parking assist mode is a function used when depar ting from a
parallel parking spot. However, this function may not be usable if obsta-
cles or people are detected in front of the vehicle. Only use this function
when departing from a parallel parking spot. In the event that the steering
control operates, either turn the system off using the S-APGS s witch or
operate the steering wheel to stop the control.
● If exit parallel parking assist mode is mistakenly used in the following situ-
ations, the vehicle may make contact with an obstacle.
The departure function is operated in a direction where an obstacle is
present, but the obstacle is not detected by the side sensors ( situations
such as when the vehicle is directly beside a pole).

488
PRIUS PRIME_OM_OM47C77U_(U)
5-5. Using the driving support systems
WARNING
●Observe the following precautions, as the sensors may stop functioning
properly which may lead to an accident.
• Do not subject the sensor to strong shocks by hitting it, etc. The sen-
sors may not function properly.
• When using a high-pressure washer to wash the vehicle, do not spray
water directly on the sensors. Equipment may not function prope rly if
subjected to an impact from strong water pressure. If the vehicle
bumper strikes something, equipment may not operate properly du e to
a sensor malfunction. Have the vehicle inspected at your Toyota dealer.
● In the following situations, the sensors may not operate normally and may
lead to an accident. Drive carefully.
• Obstacles cannot be detected in the side areas until 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.
• The sensor is frozen (if it thaws, the system returns to normal). A warning message may display at particularly low temperatures due to
the sensor freezing and it may not detect parked vehicles.
• The sensor is blocked by someone’s hand.
• The vehicle is tilted a large amount.
• The temperature is extremely hot or cold.
• The vehicle is driven on undulating roads, slopes, gravel road s, in areas
with tall grass, etc.
• An ultrasonic wave source is nearby, such as the horn or sensors of another vehicle, a motorcycle engine or the air brake of a larg e vehicle.
• Heavy rain or a water strikes the vehicle.
• The angle of the sensor may be deviated when assist control starts even if there is a parked vehicle in the target parking spot. Have the
vehicle inspected at your Toyota dealer.
• Do not install any accessories within the sensor detection ran ge.

PRIUS PRIME_OM_OM47C77U_(U)
7479-2. Customization
9
Vehicle specifications
■Automatic light control system*1 ( P. 350)
*1: If equipped
*2: This function cannot be customized for vehicles sold in Canada .
■
Rain-sensing windshield wipers* (  P. 3 6 4 )
*: If equipped
■
Intuitive parking assist* (  P. 433)
*: If equipped
FunctionDefault
settingCustomized setting
Time elapsed before the
headlights turn off 30 secondsOff
–OO
60 seconds
90 seconds
Light sensor sensitivityLevel 0Level -2 to 2–OO
Daytime running lights*2OnOff–OO
123
FunctionDefault
settingCustomized setting
Wiper operation when the
wiper switch is in the
position
Rain-sensing operation
Intermittent operation
linked to vehi- cle speed
(with interval
adjuster)
––O
123
FunctionDefault settingCustomized setting
Detection distance of the front
center sensorsFarNear––O
Detection distance of the rear
center sensorsFarNear––O
Buzzer volume31 to 5––O
123

784Alphabetical index
PRIUS PRIME_OM_OM47C77U_(U)
P position switch ..................... 343
Panic mode .............................. 275
Parking assist sensors Intuitive parking assist .......... 433
Parking Support Brake function ............................... 443
S-APGS (Simple Advanced Parking Guidance
System) .............................. 455
Parking brake ........................... 349 Operation .............................. 349
Parking brake engaged
warning buzzer ................... 349
Parking lights ........................... 350
Light switch ........................... 350
Replacing light bulbs............. 648
Parking lock ............................. 343
Parking Support Brake
function .................................. 443
PCS (Pre-Collision System) .... 381
Enabling/disabling the system ......... ....................... 385
Function ................................ 381
Warning light ......................... 663
Personal lights ......................... 528 Switch ................................... 529
Wattage ................................ 726
Plug-in hybrid system ............... 86 Driving tips ............................ 105
EV auto mode ......................... 87
EV driving range ................... 108
EV mode ................................. 87
EV/HV mode selection switch ................................... 90
Features.................................. 86
How to charge....................... 146
HV mode ................................. 87
Hybrid battery (traction battery) charge mode ........... 87 Power control unit coolant ..... 592
Capacity................................ 723
Checking............................... 592
Preparing and checking before winter ...................... 495
Radiator ................................ 594
Power outlets ........................... 541
Power sources ......................... 131
Power steering (Electric Power Steering)..................... 490 Function ................................ 490
Warning light......................... 663
Power switch ........................... 336 Auto power off function ......... 338
Changing the power
switch modes ..................... 338
If your vehicle has to be
stopped in an emergency ... 653
Starting the hybrid system .... 336
Power windows ....................... 312
Catch protection function ...... 313
Door lock linked window operation ............................ 313
Jam protection function ........ 313
Operation .............................. 312
Window lock switch .............. 312
Pre-Collision System (PCS).... 381
Enabling/disabling the system .......... ...................... 385
Function ................................ 381
Warning light......................... 663
P