2016 TOYOTA PRIUS PLUG-IN HYBRID brake

3745-5. Using the driving support systems
PRIUS PHV_OM_OM47A89E_(EE)The system may not operate in the following situations:
●If a 12-volt battery terminal has been disconnected and reconnected and
then the vehicle has not been driven for a certain amount of time
●If the shift position is in R
●If VSC is disabled (only the pre-crash warning function will be operational)
●If the PCS warning light is flashing or illuminated
Region B
(The pedestrian detection function is not available and the pre-crash brak-
ing function is available)
The pre-crash safety system is enabled and the system determines that the
possibility of a frontal collision with a vehicle is high.
Each function is operational at the following speeds:
●Pre-crash warning:
• Vehicle speed is between approximately 15 and 180 km/h (10 and
110 mph).
• The relative speed between your vehicle and the vehicle ahead is
approximately 10 km/h (7 mph) or more.
●Pre-crash brake assist:
• Vehicle speed is between approximately 30 and 180 km/h (19 and
110 mph).
• The relative speed between your vehicle and the vehicle ahead is
approximately 30 km/h (19 mph) or more.
●Pre-crash braking:
• Vehicle speed is between approximately 15 and 180 km/h (10 and
110 mph).
• The relative speed between your vehicle and the vehicle ahead is
approximately 10 km/h (7 mph) or more.
The system may not operate in the following situations:
●If a 12-volt battery terminal has been disconnected and reconnected and
then the vehicle has not been driven for a certain amount of time
●If the shift position is in R
●If VSC is disabled (only the pre-crash warning function will be operational)
●If the PCS warning light is flashing or illuminated

3755-5. Using the driving support systems
PRIUS PHV_OM_OM47A89E_(EE)
5
Driving
Region C
(The pedestrian detection function and pre-crash braking function are not
available)
The pre-crash safety system is enabled and the system determines that the
possibility of a frontal collision with a vehicle is high.
Each function is operational at the following speeds:
●Pre-crash warning:
• Vehicle speed is between approximately 15 and 180 km/h (10 and 110
mph).
• The relative speed between your vehicle and the vehicle ahead is
approximately 10 km/h (7 mph) or more.
●Pre-crash brake assist:
• Vehicle speed is between approximately 30 and 180 km/h (19 and 110
mph).
• The relative speed between your vehicle and the vehicle ahead is
approximately 30 km/h (19 mph) or more.
The system may not operate in the following situations:
●If a 12-volt battery terminal has been disconnected and reconnected and
then the vehicle has not been driven for a certain amount of time
●If the shift lever is in R
●If VSC is disabled (only the pre-crash warning function will be operational)
●If the PCS warning light is flashing or illuminated
■Pedestrian detection function
*4
*4: Depending on the region in which the vehicle was sold, the pedestrian
detection function may not be available.
■Cancelation of the pre-crash braking
*3
If either of the following occur while the pre-crash braking function is operat-
ing, it will be canceled:
●The accelerator pedal is depressed strongly.
●The steering wheel is turned sharply or abruptly.
*3: Depending on the region in which the vehicle was sold, the pre-crash brak-
ing function may not be available. The pre-crash safety system detects
pedestrians based on the size, profile,
and motion of a detected object. However,
a pedestrian may not be detected
depending on the surrounding brightness
and the motion, posture, and angle of the
detected object, preventing the system
from operating properly. (P. 380)

3805-5. Using the driving support systems
PRIUS PHV_OM_OM47A89E_(EE)●In some situations such as the following, sufficient braking force may not be
obtained, preventing the system from performing properly:
• If the braking functions cannot operate to their full extent, such as when
the brake parts are extremely cold, extremely hot, or wet
• If the vehicle is not properly maintained (brakes or tires are excessively
worn, improper tire inflation pressure, etc.)
• When the vehicle is being driven on a gravel road or other slippery sur-
face
●Some pedestrians such as the following may not be detected by the radar
sensor and camera sensor, preventing the system from operating prop-
erly
*4:
• Pedestrians shorter than approximately 1 m (3.2 ft.) or taller than approx-
imately 2 m (6.5 ft.)
• Pedestrians wearing oversized clothing (a rain coat, long skirt, etc.), mak-
ing their silhouette obscure
• Pedestrians who are carrying large baggage, holding an umbrella, etc.,
hiding part of their body
• Pedestrians who are bending forward or squatting
• Pedestrians who are pushing a stroller, wheelchair, bicycle or other vehi-
cle
• Groups of pedestrians which are close together
• Pedestrians who are wearing white and look extremely bright
• Pedestrians in the dark, such as at night or while in a tunnel
• Pedestrians whose clothing appears to be nearly the same color or
brightness as their surroundings
• Pedestrians near walls, fences, guardrails, or large objects
• Pedestrians who are on a metal object (manhole cover, steel plate, etc.)
on the road
• Pedestrians who are walking fast
• Pedestrians who are changing speed abruptly
• Pedestrians running out from behind a vehicle or a large object
• Pedestrians who are extremely close to the side of the vehicle (outside
rear view mirror, etc.)
*4: Depending on the region in which the vehicle was sold, the pedestrian
detection function may not be available.

3815-5. Using the driving support systems
PRIUS PHV_OM_OM47A89E_(EE)
5
Driving
■If the PCS warning light flashes and a warning message is displayed on
the multi-information display
The pre-crash safety system may be temporarily unavailable or there may be
a malfunction in the system.
●In the following situations, the warning light will turn off, the message will
disappear and the system will become operational when normal operating
conditions return:
• When the radar sensor or camera sensor or the area around either sen-
sor is hot, such as in the sun
• When the radar sensor or camera sensor or the area around either sen-
sor is cold, such as in an extremely cold environment
• When the radar sensor or front grille emblem is dirty or covered with
snow, etc.
• When the part of the windshield in front of the camera sensor is fogged
up or covered with condensation or ice
(Defogging the windshield: P. 509)
• If the camera sensor is obstructed, such as when the hood is open or a
sticker is attached to the windshield near the camera sensor
●If the PCS warning light continues to flash or the warning message does not
disappear, the system may be malfunctioning. Have the vehicle inspected
by any authorized Toyota dealer or repairer, or another duly qualified and
equipped professional immediately.
■If VSC is disabled
●If VSC is disabled (P. 493), the pre-crash brake assist and pre-crash brak-
ing functions are also disabled.
●The PCS warning light will turn on and “VSC Turned Off Pre-crash Brake
System Unavailable” will be displayed on the multi-information display.

4015-5. Using the driving support systems
PRIUS PHV_OM_OM47A89E_(EE)
5
Driving
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver. The desired vehicle-to-
vehicle distance can also be set by operating the vehicle-to-vehicle dis-
tance button.
Example of deceleration cruising and follow-up cruising
When a preceding vehicle driving slower than the set speed
appears
When a vehicle is detected running ahead of you, the system automatically
decelerates your vehicle. When a greater reduction in vehicle speed is
necessary, the system applies the brakes (the stop lights will come on at
this time). The system will respond to changes in the speed of the vehicle
ahead in order to maintain the vehicle-to-vehicle distance set by the driver.
Approach warning warns you when the system cannot decelerate suffi-
ciently to prevent your vehicle from closing in on the vehicle ahead.
When the vehicle ahead of you stops, your vehicle will also stop (vehicle is
stopped by system control). After the vehicle ahead starts off, pushing the
cruise control lever up or depressing the accelerator pedal will resume fol-
low-up cruising.
Example of acceleration
When there are no longer any preceding vehicles driving slower
than the set speed
The system accelerates until the set speed is reached. The system then
returns to constant speed cruising.
1
2
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4055-5. Using the driving support systems
PRIUS PHV_OM_OM47A89E_(EE)
5
Driving
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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2

4065-5. Using the driving support systems
PRIUS PHV_OM_OM47A89E_(EE)
When your vehicle is too close to
a vehicle ahead, and sufficient
automatic deceleration via the
cruise control is not possible, the
display will flash and the buzzer
will sound to alert the driver. An
example of this would be if
another driver cuts in front of you
while you are following a vehicle.
Depress the brake pedal to
ensure an appropriate vehicle-to-
vehicle distance.
■Warnings may not occur when
In the following instances, warnings may not occur even when the
vehicle-to-vehicle distance is small.
●When the speed of the preceding vehicle matches or exceeds
your vehicle speed
●When the preceding vehicle is traveling at an extremely slow
speed
●Immediately after the cruise control speed was set
●When depressing the accelerator pedal
Approach warning (vehicle-to-vehicle distance control mode)

4085-5. Using the driving support systems
PRIUS PHV_OM_OM47A89E_(EE)
■Dynamic radar cruise control with full-speed range can be set when
●The shift position is in D.
●Vehicle speed is 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.
■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 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 below approximately 40 km/h (25 mph). Otherwise, the sen-
sor 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 by pressing the VSC OFF
switch.
●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.
●The following are detected when the vehicle has been stopped by system
control:
• The driver is not wearing a seat belt.
• The driver’s door is opened.
• The vehicle has been stopped for about 3 minutes.
In this situation, the shift position may automatically switch to P. (P. 336)
If vehicle-to-vehicle distance control mode is automatically canceled for any
other reason, there may be a malfunction in the system. Contact any autho-
rized Toyota dealer or repairer, or another duly qualified and equipped profes-
sional.