TOYOTA PRIUS C 2018 Owners Manual (in English)

2314-5. Toyota Safety Sense C
4
Driving
PRIUS c_U (OM52G95U)
WARNING
●While driving, such as when driving through a railway crossing, the system
may determine that the possibility of a collision with an object, such as rail-
way crossing barrier, is high and operate the pre-collision braking function.
To move the vehicle in an emergency, such as if the system operates in a
railway crossing, perform the following operations and then take the nec-
essary measures to ensure your safety.
• If the vehicle has been stopped, depress the accelerator pedal.
• If the vehicle is decelerating, fully depress the accelerator pedal.
(→P. 233)
• Disable the pre-collision system. ( →P. 232)
■ When to disable the pre-collision system
In the following situations, disable the system, as it may not operate prop-
erly, possibly leading to an accident resulting in death or serious injury:
● When the vehicle is being towed
● When your vehicle is towing another vehicle
● When transporting the vehicle via truck, boat, train or similar means of
transportation
● When the vehicle is raised on a lift with the hybrid system on and the tires
are allowed to rotate freely
● When inspecting the vehicle using a drum tester such as a chassis dyna-
mometer or speedometer tester, or when using an on vehicle wheel bal-
ancer
● If the vehicle cannot be driven in a stable manner, such as when the vehi-
cle has been in an accident or is malfunctioning
● When the vehicle is driven in a sporty manner or off-road
● When the condition of the tires is poor and they do not perform well
(→P. 437, 448)
● When tires of a size other than specified are installed
● When tire chains are installed
● When a compact spare tire or an emergency tire puncture repair kit is used

2324-5. Toyota Safety Sense C
PRIUS c_U (OM52G95U)■
Enabling/disabling th
e pre-collision system
Press the PCS switch for 3 sec-
onds or more.
The PCS warning light will turn
on and a message will be dis-
played in the multi-information
display, when the system is
turned off.
To enable the system, press the
PCS switch again.
The pre-collision system is
enabled each time the hybrid
system is started.
■
Changing the pre-colli sion warning timing
Press the PCS switch to display the current warning timing in the
multi-information display. Each ti me the PCS switch is pressed in
the displayed state, the timing fo r the warning changes as follows:
If the operation timing setting has been changed, the setting will be
retained the next time the hybrid system is started.
Far
The warning will begin to oper-
ate earlier than with the default
timing.
Middle
This is the default setting.
Near
The warning will begin to oper-
ate later than with the default
timing.
Changing settings of the pre-collision system
1
2
3

2334-5. Toyota Safety Sense C
4
Driving
PRIUS c_U (OM52G95U)
■Operational conditions
The pre-collision system is enabled and determines that the possibility of a
frontal collision with a vehicle is high.
Each function is operational at the following speeds:
●Pre-collision warning:
• Vehicle speed is approximately 10 to 85 mph (15 to 140 km/h).
• The relative speed between your vehicle and a preceding vehicle is
approximately 10 mph (15 km/h) or more.
● Pre-collision brake assist:
• Vehicle speed is approximately 20 to 50 mph (30 to 80 km/h).
• The relative speed between your vehicle and a preceding vehicle is
approximately 20 mph (30 km/h) or more.
● Pre-collision braking:
• Vehicle speed is approximately 7 to 50 mph (10 to 80 km/h).
• The relative speed between your vehicle and a preceding vehicle is
approximately 7 mph (10 km/h) or more.
The system may not operate in the following situations:
● If a 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-collision warning function will be opera-
tional)
■ Cancelation of the pre-collision braking
●If either of the following occur while the pre-collision braking function is
operating, it will be canceled:
• The accelerator pedal is depressed strongly.
• The steering wheel is turned sharply or abruptly.
● If the vehicle is stopped by the operation of the pre-collision braking func-
tion, the operation of the pre-collision braking function will be canceled after
the vehicle has been stopped for approximately 2 seconds.

2344-5. Toyota Safety Sense C
PRIUS c_U (OM52G95U)■
Conditions under which the system ma y operate even if there is no pos-
sibility of a collision
● In some situations such as the following, the system may determine that
there is a possibility of a frontal collision and operate.
• When passing a vehicle in an oncom-
ing lane that is stopped to make a
right/left turn
• When passing an oncoming vehicle while making a left or right turn
• When driving on a road where relative location to vehicle ahead in an adja-
cent lane may change, such as on a
winding road
• When rapidly closing on a preceding vehicle

2354-5. Toyota Safety Sense C
4
Driving
PRIUS c_U (OM52G95U)• If the front of the vehicle is raised or lowered, such as when the road sur-
face is uneven or undulating
• When driving on a narrow path surrounded by a structure, such as in a tunnel or on an iron bridge
• When passing extremely close to a
vehicle or structural object
• When there is a vehicle or object by the roadside at the entrance of a
curve
• When there is a reflective object (manhole cover, steel plate, etc.),
steps, dip, or a protrusion on the road
surface or roadside
• When passing through a place with a low structure above the road (low ceil-
ing, traffic sign, etc.)
• When there is a structural object (overpass, traffic sign, billboard,
street light, etc.) at the top of an uphill
road

2364-5. Toyota Safety Sense C
PRIUS c_U (OM52G95U)• When using an automatic car wash
• When there are patterns or paint on the road or a wall that may be mis-
taken for a vehicle
• When rapidly closing on an electric
toll gate barrier, parking area barrier,
or other barrier that opens and closes
• When approaching a low hanging object that may contact the vehicle,
such as a banner, tree branches or
thick grass
• When the vehicle is hit by water, snow, dust, etc. from a vehicle ahead
• When driving through steam or smoke
• When the front part of the vehicle is raised or lowered

2374-5. Toyota Safety Sense C
4
Driving
PRIUS c_U (OM52G95U)• 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
• When the windshield is covered with raindrops, etc.

2384-5. Toyota Safety Sense C
PRIUS c_U (OM52G95U)■
Situations in which the system may not operate properly
●In some situations such as the following, a vehicle may not be detected by
the front sensor, preventing the system from operating properly:
• If an oncoming vehicle is approaching your vehicle
• When approaching the side or front of a vehicle
• If a preceding vehicle has a small rear end, such as an unloaded 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 the sun or other light is shining directly on a vehicle ahead
• If a vehicle ahead makes an abrupt maneuver (such as sudden swerving,
acceleration or deceleration)
• When suddenly cutting behind a preceding vehicle • If a preceding vehicle has a low rear end, such as a low bed trailer
• If a vehicle ahead has extremely high ground clearance
• If a vehicle cuts in front of your vehicle or emerges from beside a vehicle

2394-5. Toyota Safety Sense C
4
Driving
PRIUS c_U (OM52G95U)• When the vehicle is hit by water, snow, dust, etc. from a vehicle ahead
• When driving through steam or smoke that may obscure vehicles ahead
• When driving in a place where the surrounding brightness changes sud-
denly, such as at the entrance or exit of a tunnel
• While driving on a curve and for a certain amount of time after driving on a curve
• When a vehicle ahead is not directly
in front of your vehicle
• When driving in inclement weather such as heavy rain, fog, snow or a
sand storm
• When a very bright light, such as the sun or the headlights of oncoming
traffic, shines directly into the front
sensor
• When the surrounding area is dim, such as at dawn or dusk, or while at
night or in a tunnel

2404-5. Toyota Safety Sense C
PRIUS c_U (OM52G95U)• If the wheels are misaligned
• If a wiper blade is blocking the front sensor
• The vehicle is wobbling.
• The vehicle is being driven at extremely high speeds.
• When driving on roads with sharp bends or uneven surfaces
• When a preceding vehicle is a poor reflector of laser
● 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
• If your vehicle is skidding
• When the front part of the vehicle is
raised or lowered
• When the sensor is misaligned due to a strong impact being applied to the
sensor, etc.