Lexus RZ450E 2023 Owner's Manual page 321

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When the vehicle is stopped by system
control on a steep incline
When any of the following are detected
while the vehicle is stopped by system
control:
• The driver's seat belt is unfastened
• The driver's door is opened
• Approximately 3 minutes have elapsed
since the vehicle was stopped
The parking brake may be activated auto-
matically.
Situations in which some or all of the
functions of the system cannot operate:
P.275
Dynamic radar cruise control system
warning messages and buzzers
For safe use: P.268
Preceding vehicles that the sensor may
not detect correctly
In the following situations, depending on the
conditions, if the system cannot provide suf-
ficient deceleration or acceleration is nec-
essary, operate the brake pedal or
accelerator pedal.
As the sensor may not be able to correctly
detect these types of vehicles, the approach
warning (P.321) may not operate.
When a vehicle cuts in front of your vehi-
cle or changes lanes away from your
vehicle extremely slowly or quickly
When changing lanes
When a preceding vehicle is driving at a
low speed
When a vehicle is stopped in the same
lane as the vehicle
When a motorcycle is traveling in the
same lane as the vehicle
Conditions under which the system may
not operate correctly
In the following situations, operate the
brake pedal (or accelerator pedal, depend-
ing on the situation) as necessary.
As the sensor may not be able to correctly
detect a vehicle, the system may not oper-
ate properly.
6-2. Using the safe driving support functions
When a preceding vehicle brakes sud-
denly
When changing lanes at low speeds, such
as in a traffic jam
Conditions for extended resume time
(Vehicles with Traffic Jam Assist)
Extended resume time is activated when all
of the following conditions are satisfied:
The vehicle is driving on a vehicle-only
road, such as an expressway.
There is a preceding vehicle and the sys-
tem is able to detect it.
No vehicle interruptions occur.
The preceding vehicle has not been
replaced.
Clearance sonar and FCTA are not
detecting the object in front of you.
The driver monitor judges that the driver
is looking forward.
The steering wheel has not been oper-
ated.
The brake pedal has not been operated.
Approach warning
In situations where the vehicle
approaches a preceding vehicle and
the system cannot provide sufficient
deceleration, such as if a vehicle cuts in
front of the vehicle, a warning display
will flash and a buzzer will sound to
alert the driver. Depress the brake
pedal to ensure appropriate vehi-
cle-to-vehicle distance.
Warnings may not occur when
In the following situations, the warning
may not operate even though the vehi-
cle-to-vehicle distance is short.
 When the preceding vehicle is trav-
eling at the same speed or faster
than your vehicle
321
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