(Lane Departure Alert) - Lexus IS250 U Owner's Manual

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4-5. Using the driving support systems
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LDA (Lane Departure Alert)
Summary of function
While driving on a road that has lane markers, this system recognizes the lane
markers using a camera as a sensor to alert the driver when the vehicle deviates
from its lane.
If the system judges that the vehicle has deviated from its lane, it alerts the driver
using a buzzer and indications on the multi-information display.
Camera sensor

: If equipped
IS350/250_U (OM53C50U)