Lexus ES350, Manual, Page: 270 / 917

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ES350_300h_OM_OM33A60U_(U)
4-5. Using the driving support systems
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Temporary cancelation of the LDA system
If any of the following occurs, the LDA system will be temporarily canceled.
The function will resume after the necessary operating conditions have returned.
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The vehicle speed deviates from the operating range of the LDA system.
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The turn signal lever is operated.
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When the lane lines cannot be recognized while driving.
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When the lane departure warning sounds.
The lane departure warning function will not operate again for a several seconds
after it has been activated, even if the vehicle leaves the lane again.
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The lane departure warning
Depending on the audio system sound level or air conditioning fan noise while the
audio system or air conditioning system is in use, it may be difficult to hear the warn-
ing sound.
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After the vehicle has been parked in the sun
The LDA system may not be available and a warning message (

P. 779) will be dis-
played for a while after driving has started. When the temperature in the cabin
decreases and the temperature around the camera sensor (

P. 267) becomes suit-
able for its operation, the functions will begin to operate.
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If there are lane markers on only one side of the vehicle
The lane departure warning will not operate for the side on which lane markers
could not be recognized.
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Conditions in which the function may not operate correctly
In the following conditions, the camera sensor may be unable to recognize lane
markers causing the lane departure warning function to operate incorrectly. How-
ever, this does not indicate a malfunction.
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When driving through an area with no lane markers, such as a tollbooth, a crossing
or before a ticket checkpoint
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When driving on a sharp curve
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When lane markers are extremely narrow or extremely wide
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When the vehicle leans to one side an unusual amount due to a heavy load or
improper tire inflation pressure
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When the following distance between your vehicle and the vehicle ahead is
extremely short
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When the lane markers are yellow (These may be more difficult for the system to
recognize compared to white markers.)
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When the lane markers are broken, “Botts’ dots”, “Raised pavement marker” or
stones