Lexus 2008 IS250 Owner's Manual page 169

Customization that can be configured at Lexus dealer
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Settings (e.g. buzzer volume) can be changed. (Customizable features
CAUTION
Caution when using the intuitive parking 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.
2-4. Using other driving systems
P. 436)
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