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2574-5. Using the driving support systems
4
Driving
■Enabling/disabling the pre-collision system
The pre-collision system can be enabled/disabled on (4.2-inch
display) or (7-inch display) (P. 109, 126) of the multi-informa-
tion display.
The system is automatically enabled each time the power switch is
turned to ON mode.
If the system is disabled, the
PCS warning light will turn on
and a message will be dis-
played on the multi-information
display.
■Changing the pre-collision warning timing
The pre-collision warning timing can be changed on (4.2-inch
display) or (7-inch display) (P. 109, 126) of the multi-informa-
tion display.
The warning timing setting is retained when the power switch is turned
off. However, if the pre-collision system is disabled and re-enabled, the
operation timing will return to the default setting (middle).
If the pre-collision warning timing is changed, emergency steering
assist timing will also be changed accordingly.
If late is selected, emergency steering assist would not operate in
case of an emergency.
Early
Middle
This is the default setting.
Late
Changing settings of the pre-collision system
1
2
3
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2584-5. Using the driving support systems
■Operational conditions for each pre-collision function
The pre-collision system is enabled and the system determines that the pos-
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4d0048004600570003004c00560003004b004c004a004b0011[
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
• When the VSC OFF indicator is illuminated (only the pre-collision warning
function will be operational)
The operation speeds and operation cancellation for each function is
listed below.
●Pre-collision warning
While the pre-collision warning function is operating, if the steering wheel is
operated heavily or suddenly, the pre-collision warning may be cancelled.
●Pre-collision brake assist
Detectable objectsVehicle speed
Relative speed
between your vehicle
and object
Preceding and
stopped vehiclesApprox. 7 to 110 mph (10 to
180 km/h)Approx. 7 to 110 mph
(10 to 180 km/h)
Oncoming vehi-
clesApprox. 7 to 110 mph (10 to
180 km/h)Approx. 13 to 110
mph (20 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 speed
Relative speed
between your vehicle
and object
Preceding and
stopped 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)
Page 259 of 624

2594-5. Using the driving support systems
4
Driving
●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.
●Emergency steering assist
When the turn signal lights are flashing, emergency steering assist will not
operate in case of an emergency.
If any of the following occur while the emergency steering assist 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.
Detectable objectsVehicle speed
Relative speed
between your vehicle
and object
Preceding and
stopped vehiclesApprox. 7 to 110 mph (10 to
180 km/h)Approx. 7 to 110 mph
(10 to 180 km/h)
Oncoming vehi-
clesApprox. 7 to 110 mph (10 to
180 km/h)Approx. 13 to 110
mph (20 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 speed
Relative speed
between your vehicle
and object
Preceding and
stopped vehicles,
bicyclists and
pedestrians
Approx. 25 to 50 mph (40 to
80 km/h)Approx. 25 to 50 mph
(40 to 80 km/h)
Page 260 of 624

2604-5. Using the driving support systems
●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 work.
●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 work.
■Object detection function
Detectable
objectsVehicle speedOncoming vehi-
cle speedRelative speed
between your
vehicle and object
Oncoming
vehiclesApprox. 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 vehi-
cle speedRelative speed
between your
vehicle and object
Oncoming
vehiclesApprox. 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)
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. 263)
The illustration shows an image of detect-
able objects.
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2614-5. Using the driving support systems
4
Driving
■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 determine 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 objects,
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, etc. • When approaching a detectable
object 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
• 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
Page 262 of 624

2624-5. Using the driving support systems
• 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 when 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 metal object (manhole cover, steel plate, etc.), steps, or a
protrusion in front of your vehicle
• When approaching an electric toll gate barrier, parking area barrier, or
other barrier that opens and closes
• When using an automatic car wash
• When driving through steam or smoke
• When driving near an object that reflects radio waves, such as a large
truck or guardrail
• When driving near a TV tower, broadcasting station, electric power plant,
radar equipped vehicles, etc., or other location where strong radio waves
or electrical noise may be present
• When there are many things which can reflect the radio waves of the
radar in the vicinity (tunnels, truss bridges, gravel roads, snow covered
road that have tracks, etc.)
• While making a right/left turn, when an oncoming vehicle or a crossing
pedestrian has already exited the path of your vehicle
• While making a right/left turn, closely in front of an oncoming vehicle or a
crossing pedestrian.
• While making a right/left turn, when an oncoming vehicle or a crossing
pedestrian stops before entering the path of your vehicle • When passing under an object (road
sign, billboard, etc.)
• When driving through or under
objects that may contact your vehicle,
such as thick grass, tree branches, or
a banner
Page 263 of 624

2634-5. Using the driving support systems
4
Driving
• While steering into the direction of oncoming traffic
■Situations in which the system may not operate properly
●In some situations such as the following, an object may not be detected by
the radar sensor and front camera, preventing the system from operating
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 sudden 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 there are many things which can reflect the radio waves of the
radar in the vicinity (tunnels, truss bridges, gravel roads, snow covered
road that have tracks, etc.)
• When there is an effect on the radio waves to the radar that is installed on
another vehicle
• 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 extremely bright
• When a detectable object appears to be nearly the same color or 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, etc.
• When a very bright light ahead, such as the sun or the headlights of
oncoming traffic, shines directly into the front camera
• When approaching the side or front of a vehicle ahead
• If a vehicle ahead is a motorcycle • While making a right/left turn, when
an oncoming vehicle turns right/left in
front of your vehicle
• When a detectable object is not
directly in front of your vehicle
Page 264 of 624

2644-5. Using the driving support systems
• If a vehicle ahead is narrow, such as a personal mobility 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 a vehicle ahead is a child sized bicycle, a bicycle that is carrying a large
load, a bicycle ridden by more than one person, or a uniquely shaped
bicycle (bicycle with a child seat, tandem bicycle, etc.)
• If a pedestrian/ or the riding height of a bicyclist ahead is shorter than
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50004400570048004f005c0003001900110018000300490057[. (2 m)
• If a pedestrian/bicyclist is wearing oversized clothing (a rain coat, long
skirt, etc.), making their silhouette obscure
• If a pedestrian is bending forward or squatting or bicyclist is bending for-
ward
• If a pedestrian/bicyclist 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 nearly 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
• After the hybrid system has started the vehicle has not been driven for a
certain amount of time
• While making a left/right turn and for a few seconds after making a left/
right turn
• While driving on a curve and for a few seconds after driving on a curve
• 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