Lexus RX 350 Owner's Manual page 217

Customization
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Settings (e.g. buzzer volume) can be changed. (Customizable features P. 610)
CAUTION
Caution when using the intuitive parking assist-sensor
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Observe the following precautions.
Failing to do so may result in the vehicle being unable to be driven safely and possi-
bly cause an accident.
Do not use the sensor at speeds in excess of 6 mph (10 km/h).
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Do not attach any accessories within the sensor range.
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NOTICE
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.
Conditions possibly indicating system malfunctions
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If any of the following occurs, the system may be malfunctioning due to a sensor fail-
ure etc. Have the vehicle inspected by your Lexus dealer.
The buzzer does not sound when the intuitive parking assist-sensor mode is set.
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The sensor operation display flashes and the buzzer sounds even when no obsta-
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cle is detected.
An area of the sensors is hit or subjected to a strong impact.
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Either bumper is hit.
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The sensor operation display remains on even though no buzzer sounds.
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2-4. Using other driving systems
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