Lexus IS250 U Owner's Manual page 481

Warning messages
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The warning message illustrations used are intended as examples, and may differ from
the image that is actually displayed on the multi-information display.
Warning message in radar cruise mode (if equipped)
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In the following situations, the warning message may not be displayed even if vehicle-to-
vehicle distance decreases:
When your vehicle and the vehicle ahead are traveling at the same speed or the vehicle
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ahead is traveling more quickly than your vehicle
When the vehicle ahead is traveling at a very low speed
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Immediately after cruise control speed is set
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At the instant the accelerator pedal is depressed
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The LDA (Lane Departure Alert) lane departure warning function (if equipped)
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In the following situations, the warning message will not be displayed even if a lane line is
crossed.
When the vehicle speed deviates from the operating range of the LDA system func-
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tions
When the lane lines cannot be recognized
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Reset the maintenance data (U.S.A. only)
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Make sure to reset the oil change system. (P. 403)
Conditions that the tire pressure warning system may not function properly
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P. 428
Warning buzzer
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P. 469
IS350/250_U (OM53C50U)
8-2. Steps to take in an emergency
481
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