Lexus RX 450h Owner's Manual page 316

314 4-5. Using the driving support systems
back, etc. Also, it may be difficult to feel
steering wheel vibrations due to the road
conditions, etc.
If the edge of the course
●
straight, the lane departure alert function
may not operate.
Vehicle with BSM: It may not be possible
●
for the system to determine if there is a
danger of a collision with a vehicle in an
adjacent lane.
Do not attempt to test the operation of
●
the lane departure alert function.
*
: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb
Hands off steering wheel warning
■
In the following situations, a warning mes-
sage urging the driver to hold the steering
wheel and the symbol shown in the illustra-
tion are displayed on the multi-information
display to warn the driver. The warning
stops when the system determines that the
driver holds the steering wheel. Always
keep your hands on the steering wheel
when using this system, regardless of warn-
ings.
When the system determines that the
●
driver is driving without holding the steer-
ing wheel while the system is operating
If the driver continues to keep their hands
off of the steering wheel, the buzzer
sounds, the driver is warned and the func-
tion is temporarily canceled. This warning
also operates in the same way when the
driver continuously operates the steering
wheel only a small amount.
The buzzer also sounds even if the alert
type is set to
� � � � � � � � � � � � � � � � �
*
is not clear or
.
When the system determines that the
●
vehicle may not turn and instead depart
from its lane while driving around a curve
Depending on the vehicle condition and
road conditions, the warning may not
operate. Also, if the system determines that
the vehicle is driving around a curve, warn-
ings will occur earlier than during
straight-lane driving.
When the system determines that the
●
driver is driving without holding the steer-
ing wheel while the steering wheel assist
of the steering assist function is operat-
ing.
If the driver continues to keep their hands
off of the steering wheel and the steering
wheel assist is operating, the buzzer
sounds and the driver is warned. Each time
the buzzer sounds, the continuing time of
the buzzer becomes longer.
The buzzer also sounds even if the alert
type is set to .
Vehicle sway warning function
■
When the system determines that the vehi-
cle is swaying while the vehicle sway warn-
ing function is operating, a buzzer sounds
and a warning message urging the driver to
rest and the symbol shown in the illustration
are simultaneously displayed on the
multi-information display.
Depending on the vehicle and road condi-
tions, the warning may not operate.
Warning message
■
If the following warning message is dis-
played on the multi-information display and
the LDA indicator illuminates in orange, fol-