If The Intelligent Clearance Sonar Function Operates Unnecessarily Such As At A Railroad Crossing; Situations In Which The Intelligent Clearance Sonar Brake Function May Not Operate Properly - Lexus RX 450H Owner's Manual

If the Intelligent Clearance Sonar function operates unnecessarily such as at a railroad
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crossing
Even in the event that the Intelligent Clearance Sonar function operates unnecessarily,
such as at a railroad crossing, brake control will be canceled after approximately 2 sec-
onds, allowing you to proceed forward and leave the area, Brake control can also be
canceled by depressing the brake pedal. Depressing the accelerator pedal again will
allow you to proceed forward and leave the area.
Situations in which the Intelligent Clearance Sonar Brake function may not operate
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properly
In some situations such as the following, this function may not operate properly.
Weather
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• When a sensor or the area around a sen-
sor is extremely hot or cold
• When strong winds are blowing
• 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
Vehicle surroundings
●
• When an object that cannot be detected is between the vehicle and a detected
object
• If an object such as a vehicle, motorcycle, bicycle or pedestrian cuts in front of the
vehicle or runs out from the side of the vehicle.
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
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• 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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4-5. Using the driving support systems
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