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4-5. Using the driving support systems
LEXUS NX300h Owners Manu-
al_USA_OM78212U
4
Driving
● Brake control
• Hybrid system output restriction control
is being performed.
• The system determined that an emer-
gency brake operation was necessary to
avoid a collision.
■ Operation ending conditions
In any of the following situations, the system
stops operating.
● Hybrid system output restriction control
• The Parking Support Brake function (for
static objects) has been turned off
(stopped).
• The collision became avoidable with nor-
mal brake operation.
• The obstacle is no longer in the traveling
direction of the vehicle (6 to 13 ft. [2 to 4
m] ahead).
● Brake control
• The Parking Support Brake function (for
static objects) has been turned off
(stopped).
• Approximately 2 seconds elapsed after
the vehicle was stopped by brake control.
• The brake pedal was depressed after the
vehicle was stopped by brake control.
• The obstacle is no longer in the traveling
direction of the vehicle (6 to 13 ft. [2 to 4
m] ahead).
■ Sensor detection range
The detection range of the Parking Support
Brake function (for static objects) differs
from the detection range of the clearance
sonar (→P.231).
Therefore, even if the clearance sonar
detects an obstacle and provides a warning,
the Parking Support Brake function (for
static objects) may not start operating.
■ Obstacles not detected by the sensors
The following obstacles may not be
detected by the sensors.
● Objects such as people, cloth and snow,
that are difficult for sonic waves to reflect
off of. (In particular, people may also not
be detected depending on the type of
clothing they are wearing.)
● Objects not perpendicular with the
ground, objects not at a right angle to the
traveling direction of the vehicle, uneven
objects or waving objects
● Low objects
● Thin objects such as wires, fences, ropes
and signposts
● Objects that are extremely close to the
bumper
■ Situations when the system may operate
even though there is no possibility of a
collision
In the following situations, the system may
operate even though there is no possibility
of a collision.
● Environmental influence
• The vehicle is driven on a narrow road
• The vehicle is driven on a gravel road or
in an area with tall grass
• The vehicle is driven toward a banner or
flag, a low-hanging branch or a boom
barrier (such as those used at railroad
crossings, toll gates and parking lots).
• There is an obstacle on the shoulder of
the road (when the vehicle is driven in a
narrow tunnel, on a narrow bridge or on a
narrow road)
• The vehicle is being parallel parked
• There is a rut or hole in the surface of the
road
• When the vehicle is driven on a metal
cover (grating), such as those used for
drainage ditches
• The vehicle is driven on a steep slope
• The sensor is covered by water on a
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