2017 TOYOTA PRIUS Owners Manual

PRIUS_OM_OM47B54U_(U)
3854-5. Using the driving support systems
4
Driving
■When the operation is canceled
The maximum number of movements for multi-turn
maneuvering is reached during assist control, or the
target parking spot cannot be reached due to the
control being used on a road with steep grade.
→Follow the assist control guidance and use
the system in a wide space that does not have
a steep grade.
MessageSituation•Handling method
MessageSituation•Handling method
The driver holds the
steering wheel during
assist control. →
Stop the vehicle and
rest your hands on the
steering wheel without
applying any force.
Then press the S-APGS
switch to restart assist
control.
The vehicle speed
exceeds 4 mph
(7 km/h) during assist
control.
The S-APGS switch
is pressed while
assist control is tem-
porarily stopped and
the steering wheel is
firmly held. →
Rest your hands on the
steering wheel without
applying any force.
Then stop the vehicle to
restart assist control.
The S-APGS switch
is pressed while
assist control is tem-
porarily stopped and
the vehicle is moving.
Assist control is tem-
porarily stopped
(able to be restarted) →
Stop the vehicle and
rest your hands on the
steering wheel without
applying any force.
Then press the S-APGS
switch to restart assist
control.

386
PRIUS_OM_OM47B54U_(U)
4-5. Using the driving support systems
The vehicle moved
too close to an obsta-
cle in front of the
vehicle.→Press the S-APGS
switch after changing
the shift position to R to
restart assist control.
The vehicle moved
too close to an obsta-
cle to the rear of the
vehicle.→Press the S-APGS
switch after changing
the shift position to D to
restart assist control.
MessageSituation•Handling method

PRIUS_OM_OM47B54U_(U)
3874-5. Using the driving support systems
4
Driving
■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

388
PRIUS_OM_OM47B54U_(U)
4-5. Using the driving support systems
●When there is a parked vehicle behind the target parking spot, it may not be
detected due to the distance. Also, depending on the shape of the vehicle
and other conditions, the detectable range may shorten or detection may
not be possible.
● The Simple Advanced Parking Guidance System may not operate if grating,
diamond plates or similar materials are detected on the surface of the park-
ing space.
●
Objects other than parked vehicles, such
as poles and walls, may not be detected.
Also, even if these objects can be
detected, the target parking spot may
deviate.
Poles
Wall
● Also, the target parking spot may devi-
ate when a pedestrian, etc. is detected.
Pedestrian
1
2
1

PRIUS_OM_OM47B54U_(U)
3894-5. Using the driving support systems
4
Driving
WARNING
●Do not rely solely upon the Simple Advanced Parking Guidance System.
As with unequipped vehicles, move forward and back up carefully while
directly confirming the safety of your surroundings and the area to the rear
of the vehicle.
● Do not back up while viewing the multi-information display. Backing up
while only viewing the monitor screen may cause a collision or lead to an
accident, as the image displayed on the monitor screen may differ from
actual conditions. Make sure to visually check the surrounding areas and
the area to the rear of the vehicle with and without the mirror while backing
up.
● Drive slowly while adjusting your speed by depressing the brake pedal
when backing up or moving forward.
● If it seems the vehicle may make contact with a pedestrian, another vehi-
cle or any other obstacles, stop the vehicle by depressing the brake pedal,
and then press the S-APGS switch to turn off the system.
● Use the system in a parking lot with a flat surface.
● Observe the following precautions, as the steering wheel automatically
turns during use.
• There is risk of a necktie, scarf, your arm, etc. being caught on the
steering wheel. Please do not allow your upper body to be close to the
steering wheel. Also, do not allow children close to the steering wheel.
• There is a possibility of injury when the steering wheel turns if you have long fingernails.
• In case of an emergency, stop the vehicle by depressing the brake pedal, and then press the S-APGS switch to turn off the system.
● Always confirm that there is appropriate space before attempting to park
the vehicle and operate the system.

390
PRIUS_OM_OM47B54U_(U)
4-5. Using the driving support systems
WARNING
●Do not use the system in the following situations, as the system may be
unable to correctly assist you in reaching the target parking spot 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 or compact spare tire (if equipped)
● Do not use tire other than that provided by the manufacturer. The 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 departing 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 switch 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).

PRIUS_OM_OM47B54U_(U)
3914-5. Using the driving support systems
4
Driving
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 properly if
subjected to an impact from strong water pressure. If the vehicle
bumper strikes something, equipment may not operate properly due 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. 339)
• 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 r oads, slopes, gravel roads, 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 large 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 range.

392
PRIUS_OM_OM47B54U_(U)
4-5. Using the driving support systems
Rear view monitor system
The rear view image is displayed
when the shift lever is in R and the
power switch is in ON mode.
The rear view monitor system will
be deactivated when the shift lever
is in any position other than R.
The rear view monitor system assists the driver by displaying an
image of the view behind the veh icle with fixed guide lines on
the screen while backing up, for example while parking.
The screen illustrations used in this text are intended as examples,
and may differ from the image that is actually displayed on the
screen.