Lexus 2013 IS 350, Owner'S Manual

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4-5. Using the driving support systems
IS350 AWD/IS350/IS300 AWD/IS300_U
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Hands off steering wheel warning
If the driver continues to keep their hands off of the steering wheel, a buzzer sounds and
a warning message and the symbol shown in the illustration are displayed on the multi-
information display. This warning also operates in the same way when the driver continu-
ously operates the steering wheel only a small amount. Always keep your hands on the
steering wheel when using this system, regardless of warnings.
Depending on the vehicle and road conditions, the warning may not operate.
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Vehicle sway warning function
Depending on the vehicle and road conditions, the warning may not operate.
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White (yellow) lines are only on one side of road
The LDA system will not operate for the side on which white (yellow) lines could not be
recognized.
When the system determines that the driver has
removed their hands from the steering wheel
while the steering control function is operating,
a warning message urging the driver to hold the
steering wheel and the symbol shown in the
illustration are displayed on the multi-informa-
tion display.
When the system determines that the vehicle is
swaying while the vehicle sway warning function
is operating, a buzzer sounds and a warning
message urging the driver to rest and the sym-
bol shown in the illustration are simultaneously
displayed on the multi-information display.