2019 TOYOTA PRIUS C Owners Manual (in English)

2334-5. Toyota Safety Sense C
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Driving
PRIUS c_U
■Operational conditions
The pre-collision system is enabled and the system determines that the pos-
sibility of a frontal collision with a vehicle or pedestrian is high.
Each function is operational at the following speeds:
● Pre-collision warning
● Pre-collision brake assist
● Pre-collision braking
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 ti me
● If the shift lever is in R
● If VSC is disabled (only the pre-collision warning function wil l be opera-
tional)
Detectable objectsVehicle speedRelative speed between your vehicle and object
VehiclesApprox. 10 to 85 mph
(15 to 140 km/h)Approx. 10 mph
(15 km/h) or more
PedestriansApprox. 10 to 40 mph
(15 to 65 km/h)Approx. 10 mph
(15 km/h) or more
Detectable objectsVehicle speedRelative speed between your vehicle and object
VehiclesApprox. 20 to 50 mph
(30 to 80 km/h)Approx. 20 mph
(30 km/h) or more
PedestriansApprox. 20 to 40 mph
(30 to 65 km/h)Approx. 20 mph
(30 km/h) or more
Detectable objectsVehicle speedRelative speed between your vehicle and object
VehiclesApprox. 7 to 50 mph
(10 to 80 km/h)Approx. 7 mph
(10 km/h) or more
PedestriansApprox. 7 to 40 mph
(10 to 65 km/h)Approx. 7 mph
(10 km/h) or more

2344-5. Toyota Safety Sense C
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Object detection function
The system detects objects based on their size, profile, motion, etc. However,
an object may not be detected depending on the surrounding brig htness and
the motion, posture, and angle of the detected object, preventing the system
from operating properly. ( P. 236)
■ Cancelation of the pre-collision braking
If either of the following occur while the pre-collision brakin g function is oper-
ating, it will be canceled:
● The accelerator pedal is depressed strongly.
● The steering wheel is turned sharply or abruptly.
■ Conditions under which the system may operate even if there is no pos-
sibility of a collision
● In some situations such as the following, the system may determ ine that
there is a possibility of a frontal collision and operate.
• When passing a detectable object, etc.
• When changing lanes while overtaking a detectable object, etc.
• When rapidly closing on a detectable object, etc.
• When approaching objects on the roadside, such as detectable o bjects,
guardrails, utility poles, trees, or walls
The illustration shows an image of detect-
able objects.
• When approaching a detectableobject in an adjacent lane or on the
roadside, such as when changing the
course of travel or driving on a wind-
ing road
• When there is a detectable object or other object by the roadside at the
entrance of a curve

2354-5. Toyota Safety Sense C
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Driving
PRIUS c_U• When there are patterns or paint in front of your vehicle that
may be mis-
taken for a detectable object
• When the front of your vehicle is hit by water, snow, dust, et c.
• When passing a detectable object while making a right/left tur n
• When a detectable object approaches very close and then stops before
entering the path of your vehicle
• If the front of your vehicle is raised or lowered, such as whe n on an
uneven or undulating road surface
• When driving on a road surrounded by a structure, such as in a tunnel or
on an iron bridge
• When there is a laser reflecting object (manhole cover, reflec tive plate,
etc.), steps, or a protrusion in front of your vehicle
• When overtaking a detectable object
that is changing lanes or making a
right/left turn
• When passing a detectable object in an oncoming lane that is stopped to
make a right/left turn
• When the sensor is misaligned due to a strong impact being applied to the
sensor, etc.
• When the vehicle is being parked in a place where there is a low hanging
object at the height of the front sensor

2364-5. Toyota Safety Sense C
PRIUS c_U• When approaching an electric toll gate barrier, parking area b
arrier, or
other barrier that opens and closes
• When using an automatic car wash
• When driving through steam or smoke
■ Situations in which the syst em may not operate properly
● In some situations such as the following, an object may not be detected by
the radar sensor and front camera sensor, preventing the system from oper-
ating properly:
• When a detectable object is approaching your vehicle
• When your vehicle or a detectable object is wobbling
• If a detectable object makes an abrupt maneuver (such as sudde n swerv-
ing, acceleration or deceleration)
• When your vehicle approaches a detectable object rapidly
• When a detectable object is near a wall, fence, guardrail, manhole cover,
vehicle, steel plate on the road, etc.
• When a detectable object is under a structure
• When part of a detectable object is hidden by an object, such as large
baggage, an umbrella, or guardrail
• When multiple detectable objects are close together
• If the sun or other light is shining directly on a detectable object
• When a detectable object is a shade of white and looks extreme ly bright
• When the windshield is covered with
raindrops, etc.
• When driving through or under objects that may contact your vehicle,
such as thick grass, tree branches, or
a banner
• When a detectable object is not directly in front of your vehicle

2374-5. Toyota Safety Sense C
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Driving
PRIUS c_U• When a detectable object appears to be nearly the same color o
r bright-
ness as its surroundings
• If a detectable object cuts or suddenly emerges in front of your vehicle
• When the front of your vehicle is hit by water, snow, dust, et c.
• When a very bright light ahead, such as the sun or the headlig hts of
oncoming traffic, shines directly into the front camera sensor
• When approaching the side or front of a vehicle ahead
• If a vehicle ahead is a bicycle or motorcycle
• If a vehicle ahead is narrow, such as a personal mobility vehi cle
• If a preceding vehicle has a small rear end, such as an unload ed truck
• If a vehicle ahead is carrying a load which protrudes past its rear bumper
• If a vehicle ahead is irregularly shaped, such as a tractor or side car
• If a pedestrian ahead is shorter than approximately 3.2 ft. (1 m) or taller
than approximately 6.5 ft. (2 m)
• If a pedestrian is wearing oversized clothing (a rain coat, lo ng skirt, etc.),
making their silhouette obscure
• If a pedestrian is bending forward or squatting or bicyclist i s bending for-
ward
• If a pedestrian is moving fast
• If a pedestrian is pushing a stroller, wheelchair, bicycle or other vehicle
• When driving in inclement weather such as heavy rain, fog, snow or a sandstorm
• When driving through steam or smoke
• When the surrounding area is dim, such as at dawn or dusk, or while at
night or in a tunnel, making a detectable object appear to be n early the
same color as its surroundings
• When driving in a place where the surrounding brightness changes sud- denly, such as at the entrance or exit of a tunnel
• If your vehicle is skidding • If a preceding vehicle has a low rear end, such as a low bed trailer
• If a vehicle ahead has extremely high ground clearance

2384-5. Toyota Safety Sense C
PRIUS c_U• If the wheels are misaligned
• If a wiper blade is blocking the camera sensor
• The vehicle is being driven at extremely high speeds
• When driving on a hill
• When there is a laser reflecting object (manhole cover, reflec
tive plate,
etc.), steps, or a protrusion in front of your vehicle
• If the radar sensor or camera sensor is misaligned
● In some situations such as the following, sufficient braking fo rce 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 sli ppery sur-
face
■ If VSC is disabled
●If VSC is disabled ( P. 265), the pre-collision brake assist and pre-collision
braking functions are also disabled.
● The PCS warning light will turn on and “VSC TURNED OFF PRE-COLL I-
SION BRAKE SYSTEM UNAVAILABLE” will be displayed on the multi-i nfor-
mation display. • If the front of the vehicle is raised or
lowered

2394-5. Toyota Safety Sense C
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When driving on roads with white (yellow) lines, this function alerts the
driver when the vehicle mi ght depart from its lane.
The LDA system recognizes visi-
ble white (yellow) lines with the
front sensor on the upper portion
of the front windshield.
When the system determines that
the vehicle might depart from its
lane, a warning is displayed on
the multi-information display and
the warning buzzer sounds to
alert the driver.
When the warning buzzer sounds,
check the surrounding road situa-
tion and carefully operate the
steering wheel to move the vehicle
back to the center within the white
(yellow) lines.
LDA (Lane Depar ture Alert)
Summary of function
Lane departure alert function

2404-5. Toyota Safety Sense C
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WARNING
■Before using the LDA system
Do not rely solely upon the LDA system. LDA is not a system which auto-
matically drives the vehicle or reduces the amount of attention that must be
paid to the area in front of the vehicle. The driver must alway s assume full
responsibility for driving safely by always paying careful atte ntion to the sur-
rounding conditions and operate the steering wheel to correct t he path of
the vehicle. Also, make sure to take adequate breaks when fatigued, such
as from driving for a long period of time.
Failure to perform appropriate driving operations and pay caref ul attention
may lead to an accident, resulting in death or serious injury.
■ To avoid operating the LDA by mistake
When not using the LDA system, use the LDA switch to turn the s ystem off.
■ Preventing LDA system malfunctio ns and operations performed by
mistake
● Do not modify the headlights or place stickers, etc., on the su rface of the
lights.
● Do not modify the suspension etc. If the suspension etc. needs to be
replaced, contact your Toyota dealer.
● Do not install or place anything on the hood or grille. Also, d o not install a
grille guard (bull bars, kangaroo bar, etc.).