Lexus IS 350 2019 Owner's Manual page 324

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4-5. Using the driving support systems
WARNING
The shape of the obstacle may prevent a sensor from detecting it. Pay particular
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attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of your
vehicle
• People, animals and other moving objects
• People wearing certain types of clothing
The following situations may occur during use.
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• Depending on the shape of the obstacle and other factors, the detection distance
may shorten, or detection may be impossible.
• Obstacles may not be detected if they are too close to the sensor.
• There will be a short delay between obstacle detection and display. Even at slow
speeds, there is a possibility that the obstacle will come within the sensor's detec-
tion areas before the display is shown and the buzzer sounds.
• Thin posts or objects lower than the sensor may not be detected when
approached, even if they have been detected once.
• It might be difficult to hear beeps due to the volume of audio system or air flow
noise of the air conditioning system.
NOTICE
When using Lexus parking assist-sensor
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In the following situations, the system may not function correctly due to a sensor mal-
function, etc. Have the vehicle checked by your Lexus dealer.
The Lexus parking assist-sensor operation display flashes, and a buzzer sounds when
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no obstacles are detected.
If the area around a sensor collides with something, or is subjected to strong impact.
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If the bumper collides with something.
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If the display shows continuously without beeping, except when the buzzer mute
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switch has been turned on.
If a display error occurs, first check the sensor.
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If the error occurs even if there is no ice, snow or mud on the sensor, it is likely that the
sensor is malfunctioning.
Notes when washing the vehicle
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Do not apply intensive bursts of water or steam to the sensor area.
Doing so may result in the sensor malfunctioning.
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