Lexus RC350 User Manual page 256

256
4-5. Using the driving support systems
Temporary cancelation of the LDA system functions
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If any of the following occurs, the LDA system functions will be temporarily canceled. The
functions will resume after the necessary operating conditions have returned.
The turn signal lever is operated.
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The vehicle speed deviates from the operating range of the LDA system functions.
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When the lane lines cannot be recognized while driving.
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When the lane departure warning sounds.
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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.
The lane departure warning
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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 warning sound.
After the vehicle has been parked in the sun
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The LDA system may not be available and a warning message (P. 554) 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. 239) becomes suitable for its
operation, the functions will begin to operate.
If there are lane markers on only one side of the vehicle
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The lane departure warning will not operate for the side on which lane markers could not
be recognized.
Conditions in which the function may not operate correctly
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In the following situations, the camera sensor may be unable to recognize lane markers
causing the lane departure warning function to operate incorrectly. However, this does
not indicate a malfunction.
When driving through an area with no lane markers, such as a tollbooth, a crossing or
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before a ticket checkpoint
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
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tire inflation pressure
When the following distance between your vehicle and the vehicle ahead is extremely
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short
When the lane markers are yellow (These may be more difficult for the system to rec-
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ognize compared to white markers.)
When the lane markers are broken, Botts' dots (raised pavement markers) or stones
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When the lane markers are on a curb etc.
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When lane markers are obscured or partially obscured by sand, dirt, etc.
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When there are shadows on the road running parallel with lane markers, or if a shadow
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covers the lane markers
When driving on a particularly bright road surface, such as concrete
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When driving on a road surface that is bright due to reflected light
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When driving in a location where the light level changes rapidly, such as the entrance to
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or exit from a tunnel
RC350_RC300_RC200t_RC F_U (OM24671U)