TOYOTA C-HR 2021 Owners Manual (in English)

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PCS (Pre-Collision System)
The system can detect the following (The detectable objects differs
depending on the function.):
● Vehicles
● Bicyclists
● Pedestrians
The pre-collision system uses a radar sensor and front camera
to detect objects ( P. 231) in front of the vehicle. When the sys-
tem determines that the possibility of a frontal collision with an
object is high, a warning operates to urge the driver to take e va-
sive action and the potential brake pressure is increased to he lp
the driver avoid the collision. If the system determines that t he
possibility of a frontal collision with an object is extremely high,
the brakes are automatically applied to help avoid the collisio n
or help reduce the impa ct of the collision.
The pre-collision system can b e disabled/enabled and the warnin g
timing can be changed. ( P. 2 3 6 )
Detectable objects

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Pre-collision warning
When the system determines
that the possibility of a frontal
collision is high, a buzzer will
sound and a warning message
will be displayed on the multi-
information display to urge the
driver to take evasive action.
■Pre-collision brake assist
When the system determines that
the possibility of a frontal colli-
sion is high, the system applies greater braking force in relat ion to
how strongly the brake pedal is depressed.
■Pre-collision braking
If the system determines that the possibility of a frontal collision is
extremely high, the brakes are automatically applied to help avoid
the collision or reduce th e impact of the collision.
■Emergency steering assist
If the system determines that the possibility of a collision with a
pedestrian is high and that there is sufficient space for the v ehicle
to be steered into within its lane, and the driver has begun ev asive
maneuver or steering, emergency steering assist will assist the
steering movements to help enhance the vehicle stability and fo r
lane departure prevention.
System functions

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Intersection right/left turn assistance
If the system determines that t
here is a high possibility of a collision
in the following situations, it will assist with Pre-collision warning
and, if necessary Pre-collision braking.
Depending on the configuration of the intersection, it may not be
possible to support.
● When you turn right/left at an
intersection and cross the
path of an oncoming vehicle
● When you turn right/left,
pedestrian is detected in the
forward direction and esti-
mated to enter your vehicle’s
path (bicyclists are not
detected.)

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WARNING
■Limitations of the pre-collision system
● The driver is solely responsible for safe driving. Always drive safely, taking
care to observe your surroundings.
Do not use the pre-collision system instead of normal braking o perations
under any circumstances. This system will not prevent collision s or lessen
collision damage or injury in every situation. Do not overly re ly on this sys-
tem. Failure to do so may lead to an accident, resulting in dea th or serious
injury.
● Although this system is designed to help avoid a collision or h elp reduce
the impact of the collision, its effectiveness may change according to vari-
ous conditions, therefore the system may not always be able to achieve
the same level of performance.
Read the following conditions carefully. Do not overly rely on this system
and always drive carefully.
• Conditions under which the system may operate even if there is no pos-
sibility of a collision: P. 240
• Conditions under which the system may not operate properly: P. 242
● Do not attempt to test the operation of the pre-collision syste m yourself.
Depending on the objects used for testing (dummies, cardboard o bjects
imitating detectable objects, etc.), the system may not operate properly,
possibly leading to an accident.
■ Pre-collision braking
● When the pre-collision braking function is operating, a large a mount of
braking force will be applied.
● If the vehicle is stopped by the operation of the pre-collision braking func-
tion, the pre-collision braking function operation will be canceled after
approximately 2 seconds. Depress the brake pedal as necessary.
● The pre-collision braking function may not operate if certain o perations are
performed by the driver. If the accelerator pedal is being depressed
strongly or the steering wheel is being turned, the system may determine
that the driver is taking evasive action and possibly prevent t he pre-colli-
sion braking function from operating.
● In some situations, while the pre-collision braking function is operating,
operation of the function may be canceled if the accelerator pedal is
depressed strongly or the steering wheel is turned and the syst em deter-
mines that the driver is taking evasive action.
● If the brake pedal is being depressed, the system may determine that the
driver is taking evasive action and possibly delay the operation timing of
the pre-collision braking function.

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WARNING
■Emergency steering assist
● As emergency steering assist operation will be canceled when th e system
determines that lane departure prevention function has been com pleted.
● Emergency steering assist may not operate or may be cancel in t he follow-
ing cases as the system may determine the driver is taking actions.
• If the accelerator pedal is being depressed strongly, the steering wheel is being operated sharply, the brake pedal is being depressed or the
turn signal lever is being operated. In this case, the system m ay deter-
mine that the driver is taking evasive action and the emergency steering
assist may not operate.
• In some situations, while the emergency steering assist is ope rating,
operation of the function may be canceled if the accelerator pe dal is
depressed strongly, the steeri ng wheel is operated sharply or t he brake
pedal is being depressed and the system determines that the dri ver is
taking evasive action.
• When the emergency steering assist is operating, if the steeri ng wheel
is held firmly or is operated in the opposite direction to that which the
system is generating torque, the function may be canceled.
■ 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 ser ious 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 engine running an d the tires
are allowed to rotate freely
● When inspecting the vehicle using a drum tester such as a chass is dyna-
mometer or speedometer tester, or when using an on vehicle whee l bal-
ancer
● When a strong impact is applied to the front bumper or front gr ille, due to
an accident or other reasons
● 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 tires are not properly inflated

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Enabling/disabling th
e pre-collision system
The pre-collision system can be enabled/disabled on (P. 5 0 7 )
of the multi-information display.
The system is automatically enabled each time the engine switch is
turned to the “ON” position (vehicles without a smart key syste m) or
turned to IGNITION ON mode (vehicles with a smart key system).
If the system is disabled, the
PCS warning light will turn on
and a message will be dis-
played on the multi-information
display.
WARNING
● When the tires are very worn
● 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
● If equipment (snow plow, etc.) that may obstruct the radar sens or or front
camera is temporarily installed to the vehicle
Changing settings of the pre-collision system

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Changing the pre-colli
sion warning timing
The pre-collision warning timing can be changed on (P. 507)
of the multi-information display.
The warning timing setting is retained when the engine switch is turned
off. However, if the pre-collision system is disabled and re-en abled, the
operation timing will return to the default setting (middle).
If the pre-collision warning timing is changed, e mergency steering
assist timing will also b e changed accordingly.
If late is selected, emergency st eering assist would not operate in
case of an emergency.
Early
Middle
This is the default setting.
Late

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■Operational conditions for each pre-collision function
The pre-collision system is enabled and the system determines that the pos-
sibility of a frontal collision with a detected object is high.
The system may not operate in the following situations:
• If a battery terminal has been disconnected and reconnected an d then
the vehicle has not been driven for a certain amount of time
• If the shift lever is in R
• When the VSC OFF indicator is illuminated (only the pre-collis ion warning
function will be operational)
The operation speeds and operation cancellation for each functi on is listed
below.
● Pre-collision warning
● Pre-collision brake assist
● 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.
Detectable objectsVehicle speedRelative speed betweenyour vehicle and object
VehiclesApprox. 7 to 110 mph (10 to 180 km/h)Approx. 7 to 110 mph (10 to 180 km/h)
Bicyclists and pedestriansApprox. 7 to 50 mph (10 to 80 km/h)Approx. 7 to 50 mph (10 to 80 km/h)
Detectable objectsVehicle speedRelative speed betweenyour vehicle and object
VehiclesApprox. 20 to 110 mph (30 to 180 km/h)Approx. 20 to 110 mph (30 to 180 km/h)
Bicyclists and pedestriansApprox. 20 to 50 mph (30 to 80 km/h)Approx. 20 to 50 mph (30 to 80 km/h)
Detectable objectsVehicle speedRelative speed betweenyour vehicle and object
VehiclesApprox. 7 to 110 mph (10 to 180 km/h)Approx. 7 to 110 mph (10 to 180 km/h)
Bicyclists and pedestriansApprox. 7 to 50 mph (10 to 80 km/h)Approx. 7 to 50 mph (10 to 80 km/h)

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Emergency steering assist
When the turn signal lights are flashing, emergency steering as sist will not
operate in case of an emergency.
If any of the following occur while the emergency steering assi st function is
operating, it will be canceled:
• The accelerator pedal is depressed strongly.
• The steering wheel is turned sharply or abruptly.
• The brake pedal is depressed.
● Intersection right/left turn assistance (pre-collision warning)
When the turn signal lights are not flashing, support for turning left or right
at an intersection which targets oncoming vehicles does not wor k.
● Intersection right/left turn assistance (pre-collision braking)
When the turn signal lights are not flashing, support for turning left or right
at an intersection which targets oncoming vehicles does not wor k.
Detectable objectsVehicle speedRelative speed between
your vehicle and object
Pedestrians Approx. 25 to 50 mph (40
to 80 km/h) Approx. 25 to 50 mph (40
to 80 km/h)
Detectable
objectsVehicle speedOncoming vehicle speedRelative speed between your
vehicle and object
Vehicles
Approx. 7 to
15 mph (10 to
25 km/h)Approx. 20 to
35 mph (30 to
55 km/h)Approx. 25 to
50 mph (40 to
80 km/h)
Pedestrians
Approx. 7 to
15 mph (10 to 25 km/h)
-Approx. 7 to 15 mph
(10 to 25 km/h)
Detectable objectsVehicle speedOncoming vehicle speedRelative speed between your
vehicle and object
Vehicles
Approx. 10 to
15 mph (15 to
25 km/h)Approx. 20 to
28 mph (30 to
45 km/h)Approx. 28 to
43 mph (45 to
70 km/h)
Pedestrians
Approx. 7 to
15 mph (10 to 25 km/h)
-Approx. 7 to 15 mph (10 to 25 km/h)

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Object detection function
■ 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
• 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.
The system detects objects based on
their size, profile, motion, etc. However,
an object 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. 242)
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