2018 TOYOTA PRIUS PLUG-IN HYBRID stop start

4305-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
After the vehicle ahead of you
starts off, push the lever up.
Your vehicle will also resume fol-
low-up cruising if the accelerator
pedal is depressed after the vehi-
cle ahead of you starts off.
Pulling the lever toward you
cancels the speed control.
The speed control is also canceled
when the brake pedal is
depressed.
(When the vehicle has been
stopped by system control,
depressing the brake pedal does
not cancel the setting.)
Pushing the lever up resumes the cruise control and returns vehicle
speed to the set speed.
However, when a vehicle ahead is not detected, cruise control does not
resume when the vehicle speed is approximately 40 km/h (25 mph) or less.
Resuming follow-up cruising when the vehicle has been stopped
by system control (vehicle-to-vehicle distance control mode)
Canceling and resuming the speed control
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4335-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
5
Driving
■Dynamic radar cruise control with full-speed range can be set when
●The shift position is in D.
●Vehicle speed is at or above approximately 50 km/h (30 mph).
However, when a preceding vehicle is detected, the dynamic radar cruise
control with full-speed range can be set even if the vehicle speed is at or
below approximately 50 km/h (30 mph).
■Accelerating after setting the vehicle speed
The vehicle can accelerate by operating the accelerator pedal. After acceler-
ating, the set speed resumes. However, during vehicle-to-vehicle distance
control mode, the vehicle speed may decrease below the set speed in order
to maintain the distance to the preceding vehicle.
■When the vehicle stops while follow-up cruising
●Pushing the lever up while the vehicle ahead stops will resume follow-up
cruising if the vehicle ahead starts off within approximately 3 seconds after
the lever is pushed up.
●If the vehicle ahead starts off within 3 seconds after your vehicle stops, fol-
low-up cruising will be resumed.
■Automatic cancelation of vehicle-to-vehicle distance control mode
Vehicle-to-vehicle distance control mode is automatically canceled in the fol-
lowing situations:
●Actual vehicle speed falls at or below approximately 40 km/h (25 mph) when
there are no vehicles ahead.
●The preceding vehicle leaves the lane when your vehicle is following at a
vehicle speed at or below approximately 40 km/h (25 mph). Otherwise, the
sensor can not properly detect the vehicle.
●VSC is activated.
●TRC is activated for a period of time.
●When the VSC or TRC system is turned off.
●The sensor cannot detect correctly because it is covered in some way.
●Pre-crash braking is activated.
●Intelligent Clearance Sonar is operated. (if equipped)
●The parking brake is operated.
●The vehicle is stopped by system control on a steep incline.

4525-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)■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.
• 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

4755-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
5
Driving
■Operation starting conditions
When the ICS OFF indicator is not illuminated or flashing (P. 480,
674) and all of the following conditions are met, the system operates.
Hybrid system output restriction control
●The Intelligent Clearance Sonar is on.
●The vehicle speed is 15 km/h (10 mph) or less.
●There is an obstacle in the traveling direction of the vehicle (2 to
4 m [6 to 13 ft.] ahead).
●The system determined that a stronger-than-normal brake opera-
tion was necessary to avoid a collision.
Brake control
●Hybrid system output restriction control is being performed.
●The system determined that an emergency brake operation was
necessary to avoid a collision.
■Operation ending conditions
In any of the following situations, the system stops operating.
Hybrid system output restriction control
●The Intelligent Clearance Sonar function has been turned off
(stopped).
●The collision became avoidable with normal brake operation.
●The obstacle is no longer in the traveling direction of the vehicle
(2 to 4 m [6 to 13 ft.] ahead).
Brake control
●The Intelligent Clearance Sonar function has been turned off
(stopped).
●Approximately 2 seconds elapsed after the vehicle was stopped
by brake control.
●The brake pedal was depressed after the vehicle was stopped by
brake control.
●The obstacle is no longer in the traveling direction of the vehicle
(2 to 4 m [6 to 13 ft.] ahead).
Operation conditions

4775-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
5
Driving
■Sensor detection range
The detection range of the Intelligent Clearance Sonar function differs from
the detection range of the Toyota parking assist-sensor (P. 464).
Therefore, even if the Toyota parking assist-sensor detects an obstacle and
provides a warning, the Intelligent Clearance Sonar may not start operating.
■System operation
When the vehicle is stopped by system operation, the Intelligent Clearance
Sonar function stops and the ICS OFF indicator illuminates.
■System recovery
When the Intelligent Clearance Sonar function is stopped by system opera-
tion and you would like to resume operation, either turn the Intelligent Clear-
ance Sonar on again (P. 472), or turn the power switch off and then back
on. Furthermore, when the vehicle moves with an obstacle no longer in the
traveling direction of the vehicle, or when the traveling direction of the vehicle
changes (such as when switching from moving forward to backing up, and
vice versa), system operation automatically resumes.
■Obstacles not detected by the sensors
The following obstacles may not be detected by the sensors.
●Objects such as people, cloth and snow, that are difficult for sonic waves to
reflect off of. (In particular, people may also not be detected depending on
the type of clothing they are wearing.)
●Objects not perpendicular with the ground, objects not at a right angle to the
traveling direction of the vehicle, uneven objects or waving objects
●Low objects
●Thin objects such as wires, fences, ropes and signposts
●Objects that are extremely close to the bumper
■Toyota parking assist-sensor buzzer
Regardless of whether the Toyota parking assist-sensor is on or off (P. 4 5 9 ) ,
if the Intelligent Clearance Sonar function is not stopped (P. 472), when the
front or rear sensors detect an obstacle and brake control is performed, the
Toyota parking assist-sensor buzzer also sounds and a notification of the
approximate distance to the obstacle is provided.

4845-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
Chart of Simple Intelligent Parking Assist System assist modes
and functions
Assist modeType of
parkingFunction summarySee page
Parallel parking
assist modeParallel park-
ing
Guidance is provided to
detect the intended
parking spot and reach a
position to begin back-
ing up from. Assistance
is provided from when
the vehicle begins back-
ing up until it reaches
the intended parking
spot.
P. 489
Exit parallel park-
ing assist modeExit parallel
parking
Assistance starts after
the vehicle has been
parallel parked. Assis-
tance is provided to
guide the vehicle from
the parking space to a
position from which it
can take off.
P. 496
Back-in parking
assist mode
(with forward guid-
ance function)
Back-in park-
ing
Assistance starts after
stopping the vehicle in
front of the intended
parking spot, and is pro-
vided for backing into a
parking space, including
guidance to reach a
position to begin back-
ing up from.
P. 501

4885-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
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 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 7 km/h (4 mph) 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. 5 11 )

4895-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
5
Driving
■Function summary
If a parking space can be detected, you will be guided forward until
you reach the assist control starting position, and then the parallel
parking assist mode can be used. Furthermore, depending on the
parking space and other conditions, multi-turn maneuvering assist
control is also provided if necessary.
Continue moving forward
with the vehicle parallel to
the curb or road, and stop so
that the center of the target
parking spot appears nearly
perpendicular to the vehicle.
Then press the S-IPA switch
1 time to select the parallel
parking assist mode.
Travel straight ahead paral-
lel with the road or curb so
that the parking space is
detected.
A sound is issued and a display is shown to notify you when the
vehicle reaches a position where assist control can be used to
begin backing up from, and then when the shift position is
changed according to guidance provided by the system, steering
wheel auto operation begins.
If the detected parking space or road width (distance to the side of the
road across from the parking space) is narrow, or if there are obstacles
in front of the vehicle, guidance will not be issued.
How to parallel park (parallel parking assist mode)
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