Lexus ES 350 Owner's Manual page 462

Changing the engine oil (USA only)
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Make sure to reset the oil change system. (P. 377)
Warning light display in radar cruise mode
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In the following cases, the warning light may not be displayed even if vehicle-to-
vehicle distance closes.
When your vehicle and the vehicle ahead are traveling at the same speed or the
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vehicle 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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5-2. Steps to take in an emergency
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