Situations In Which The Intelligent Clearance Sonar Function May Operate Even If There Is No Possibility Of A Collision - Lexus RX 450H Owner's Manual

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4-5. Using the driving support systems
Situations in which the Intelligent Clearance Sonar function may operate even if there
■
is no possibility of a collision
In some situations such as the following, the Intelligent Clearance Sonar function may
operate even though there is no possibility of a collision.
Vehicle surroundings
●
• When driving on a narrow road
• When driving on a gravel road or in an
area with tall grass
• When driving toward a banner, flag, low-hanging branch or boom barrier (such as
those used at railroad crossings, toll gates and parking lots).
• When driving on a narrow path surrounded by a structure, such as in a tunnel or on
an iron bridge)
• When parallel parking
• When there is a rut or hole in the surface of the road
• When driving on a metal cover (grating), such as those used for drainage ditches
• When driving on a steep slope
• If a sensor is hit by a large amount of water, such as when driving on a flooded road
Weather
●
• If a sensor is covered with ice, snow, dirt, etc. (when cleared, the system will return to
normal)
• If heavy rain or water strikes a sensor
• When driving in inclement weather such as fog, snow or a sandstorm
Other ultrasonic waves sources
●
• When vehicle horns, vehicle detectors, motorcycle engines, air brakes of large vehi-
cles, the clearance sonar of other vehicles or other devices which produce ultra-
sonic waves are near the vehicle
• If a sticker or an electronic component, such as a backlit license plate (especially flu-
orescent type), fog lights, a fender pole or wireless antenna is installed near a sensor
Changes in the vehicle posture
●
• If the vehicle is significantly tilted
• If the front of the vehicle is raised or lowered due to the carried load
• If the orientation of a sensor has been changed due to a collision or other impact
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