2018 TOYOTA PRIUS wheel

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PRIUS_OM_OM47B89U_(U)
4-5. Using the driving support systems
■Temporary cancellation of functions
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. (→P. 299)
■ Steering control function
Depending on the vehicle speed, lane departure situation, road conditions,
etc., the driver may not feel the function is operating or the function may not
operate at all.
■ Lane departure alert function
The warning buzzer may be difficult to hear due to external noise, audio play-
back, etc.
■ Hands off steering wheel alert
When the system determines that the driver has removed the hands from the
steering wheel while the steering control function is operating, a warning
message is displayed on the multi-information display.
If the driver continues to keep the hands off of the steering wheel, a buzzer
sounds and a warning message is displayed. This alert also operates in the
same way when the driver continuously operates the steering wheel only a
small amount. However, depending on the road conditions, etc., the function
may not cancel.
■ White (yellow) lines are only on one side of road
The LDA system will not operate for the side on which white (yellow) lines
could not be recognized.

PRIUS_OM_OM47B89U_(U)
3034-5. Using the driving support systems
4
Driving
■Other indicators
If the following indicators are displayed on the multi-information display, fol-
low the appropriate procedure.
■ Customization
The following settings can be changed.
For how to change settings, refer to P. 139.
IndicatorDetails/Actions
Indicates that the LDA system has determined that the
driver does not have the ha nds on the steering wheel
while the steering control function is on
A buzzer also sounds.
→ Firmly hold the steering wheel.
Indicates that the LDA system has determined that the
vehicle is swaying
→Immediately take a break if you feel tired while driving.
FunctionSetting details
Lane departure alert functionAdjust alert sensitivity
Steering control functionTurn steering wheel assistance on and off
Vehicle sway warning functionTurn function on and off
Adjust alert sensitivity

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PRIUS_OM_OM47B89U_(U)
4-5. 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 the road curves or when the lanes
are narrow
● When steering wheel operation or your
position in the lane is unstable

344
PRIUS_OM_OM47B89U_(U)
4-5. Using the driving support systems
■Operation conditions
The power switch is turned on.
●Front corner sensors:
• Shift position is not in P
• Vehicle speed is approximately 6 mph (10 km/h) or less
● Front side sensors/rear side sensors:
• Shift position is not in P
• Vehicle speed is approximately 6 mph (10 km/h) 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 6 mph (10 km/h) or less
● Rear corner sensors/rear center sensors:
Shift position is in R
■ Clearance sonar pop-up display
→P. 367
■ 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 befo\
re
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.

363
PRIUS_OM_OM47B89U_(U)
4-5. Using the driving support systems
4
Driving
S-APGS (Simple Adva nced Parking Guidance
System)
∗
■Function summary
The Simple Advanced Parking Guidance System automatically
operates the steering wheel to provide support when backing into
an area near a target parking spot, and when departing from a par-
allel parking spot. (Shift lever operations and speed adjustment
when moving forward or backing up are not performed automati-
cally.)
● The Simple Advanced Parking Gu idance System does not park
the vehicle automatically. It is a system that provides support
when pulling out of a perpendicular or parallel parking spot.
● The Simple Advanced Parking Guidance System provides steer-
ing wheel operation assistance to guide the vehicle toward the
selected intended parking spot. The selected intended parking
spot may not always be reach able, depending on road and vehi-
cle conditions at the time of parking, and the distance to the
intended parking spot.
■Linking with the Intelligent Clearance Sonar function
While the Simple Advanced Parking Guidance System is operating,
if the system detects an obstacle that could result in a collision, the
emergency brakes operat e, regardless of whether the Intelligent
Clearance Sonar function is on or off. ( →P. 365)
∗: If equipped
Simple Advanced Parking Guidance System
WARNING
●When backing up or proceeding forward, be sure to directly confirm the
safety of the area to the front or rear, and the area around the vehicle, and
slowly back up or proceed forward while adjusting the vehicle speed by
depressing the brake pedal.
● 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 ( →P. 366) to turn the system off.

PRIUS_OM_OM47B89U_(U)
3674-5. Using the driving support systems
4
Driving
The guidance screen is displayed on the multi-information display.
Assistance level indicator
Displays a gauge indicating the
level until the vehicle’s stopping
position/the position at which assist
control ends.
Stop display
When illuminated, depress the
brake pedal and stop the vehicle at
once.
Operation display area
Displays the operating condition of the Simple Advanced Parking Guid-
ance System.
Advice display
Follow the instructions on the display and perform any indicated opera-
tions. As an example, the illustration shows the display indicating it is nec-
essary to depress the brake pedal in order to control the vehicle speed and
to confirm the safety of your surroundings.
S-APGS switch icon
Displayed when the assist mode can be changed and the system can be
turned off or on using the S-APGS switch.
Steering wheel auto operation display
Displays when the steering wheel auto operation is being performed.
Clearance sonar display/door position (open/close) display
→P. 340
■S-APGS indicator inside the meter ( →P. 104)
This indicator illuminates when the steering wheel auto operation is being
performed by the Simple Advanced Parking Guidance System. After control
ends, the indicator blinks for a short period of time and then turns off.
■ Clearance sonar pop-up display
While the Simple Advanced Parking Guidance System is operating, if the
clearance sonar function detects an obstacle, the clearance sonar display
automatically pops up on the guidance screen ( →P. 340), regardless of
whether the clearance sonar function is on or off. ( →P. 339)
Guidance screen
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PRIUS_OM_OM47B89U_(U)
4-5. Using the driving support systems
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 parki ng 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 can-
celed. 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 Intelligent Clearance Sonar function operates
When assist control is stopped, it can be resumed by following the
guidance shown on the screen.
■ If the vehicle speed is about to exceed the speed limit during assist con-
trol
Canceling or stopping assist mode
A buzzer sounds and the message indi-
cating there is possibility that the vehicle
speed may exceed the speed limit.
When the message is displayed, immedi-
ately depress the brake pedal to deceler-
ate. If the vehicle continues to accelerate,
assist control will be canceled when the
vehicle speed exceeds a certain speed.
( →P. 391)

PRIUS_OM_OM47B89U_(U)
3694-5. Using the driving support systems
4
Driving
■Function summary
Stop so that the center of the target parking spot appears nearly
perpendicular to the vehicle. If t he space is detectable, the forward
guidance function can be used. Furthermore, depending on the
parking space and other condition s, multi-turn maneuvering assist
control is also provided if necessary.
Stop so that the center of the
target parking spot appears
nearly perpendicular to the
vehicle. Then press the
S-APGS switch 2 times to
select back-in parking assist
mode.
Steering wheel auto opera-
tion starts when the vehicle
begins to move.
A sound is issued and a dis-
play is shown to notify you
when the vehicle reaches the
position to start backing up
from.
If the detected parking space or
road width (distance to the side
of the road across from the park-
ing space) is narrow, or if there
are obstacles in front of the vehi-
cle, guidance will not be issued.
Parking is complete
This completes the assist mode.
Depending on the condition of the parking space, guidance to starting
points for moving forward and backing up, as well as the steering wheel
auto operation, are repeated any time multi-turn maneuvering is neces-
sary following step from the time the vehicle begins backing up until
parking completes.
How to park next to other vehicles (back-in parking assist mode)
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