Lexus RX350 2023, Manual

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4-5. Using the driving support systems
4
Driving
the vehicle speed. If the system deter-
mines the driver is not responsive, it will
operate in control state “Deceleration
stop phase” and “Stop hold phase” and
decelerate and stop the vehicle. It will
then operate continuously in “Stop
hold phase”.
■ Operating conditions
This system operates when all of the follow-
ing conditions are met:
● When the LTA is on
Or during the Traffic Jam Assist controls (if
equipped)
● When the vehicle speed is approximately
30 mph (50 km/h) or more
During the Traffic Jam Assist (if equipped)
controls, the system may operate at below
30 mph (50 km/h).
■
Operation cancelation conditions
In the following situations, system operation
will be canceled:
●
When LTA control has been canceled
(the LTA switch has been pressed, etc.)
●
When the dynamic radar cruise control
has been canceled
●
When driver operations are detected
(the steering wheel is held, the brake
pedal, accelerator pedal, parking brake,
hazard light switch, or turn signal lever is
operated)
●
When the driving assist switch is pressed
while in the stop and hold phase
●
When the engine switch has been turned
from ON to off
●
Situations in which some or all of the
functions of the system cannot operate:

P.235
■ LTA control when operation is canceled
When emergency driving stop system
operation is canceled, LTA control may also
be canceled.
If driving operations are not detected
after the hands off steering wheel
warning operates, a buzzer will sound
intermittently and a message will be
displayed to warn the driver, and the
system will judge if the driver is respon-
sive or not. If driving operations, such
as holding the steering wheel, are not
performed within a certain amount of
time, the system will enter warning
phase 2.
Vehicles with a driver monitor camera:
Depending on the type of detection of
the driver’s unresponsiveness, the sys-
tem may skip warning phase 1 and start
the control of warning phase 2.
After entering warning phase 2, a
buzzer will sound in short intervals and
a message will be displayed to warn the
driver, and the vehicle will slowly decel-
erate. If driving operations, such as
holding the steering wheel, are not
performed within a certain amount of
time, the system will determine that the
driver is not responsive and enter the
deceleration stop phase.
The audio system will be muted until the
driver becomes responsive.
When the vehicle is decelerating, the
brake lights may illuminate, depending on
the road conditions, etc.
After entering the deceleration stop
Warning phase 1
Warning phase 2
Deceleration stop phase