Lexus RX 450h Owner's Manual page 332

330 4-5. Using the driving support systems
The speed control is also canceled when
the brake pedal is depressed.
2 Pushing the lever up resumes the
cruise control and returns vehicle
speed to the set speed.
However, cruise control does not resume
when the vehicle speed is approximately
25 km/h (16 mph) or less.
Approach warning (vehi-
cle-to-vehicle distance control
mode)
When your vehicle is too close to a
vehicle ahead, and sufficient automatic
deceleration via the cruise control is
not possible, the display will flash and
the buzzer will sound to alert the driver.
An example of this would be if another
driver cuts in front of you while you are
following a vehicle. Depress the brake
pedal to ensure an appropriate vehi-
cle-to-vehicle distance.
Warnings may not occur when
■
In the following instances, warnings
may not occur even when the vehi-
cle-to-vehicle distance is small.
 When the speed of the preceding
vehicle matches or exceeds your
vehicle speed
� � � � � � � � � � � � � � � � �
 When the preceding vehicle is
traveling at an extremely slow speed
 Immediately after the cruise control
speed was set
 When depressing the accelerator
pedal
Selecting constant speed con-
trol mode
When constant speed control mode is
selected, your vehicle will maintain a
set speed without controlling the vehi-
cle-to-vehicle distance. Select this
mode only when vehicle-to-vehicle dis-
tance control mode does not function
correctly due to a dirty radar, etc.
With the cruise control off, press
1
and hold the "ON/OFF" button for
1.5 seconds or more.
Immediately after the "ON/OFF" button is
pressed, the dynamic radar cruise control
indicator will come on. Afterwards, it
switches to the cruise control indicator.
Switching to constant speed control mode
is only possible when operating the lever
with the cruise control off.
2 Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (at or above
approximately 30 km/h [20 mph] )