Lexus 2003 LS Owner's Manual page 279

Braking control
Dynamic laser cruise control is not a collision avoidance
system. If an approach warning is activated, depress the brake
pedal to decelerate to ensure
vehicle–to–vehicle distance.
31L177

1 Under the vehicle–to–vehicle distance control
2 Braking activated
Braking control is operating only when the vehicle–to–vehicle
distance control mode is selected and your vehicle speed
exceeds about 40 km/h (25 mph).
If you are getting closer to the vehicle ahead at relatively higher
speed than those of the vehicle ahead or if engine braking
cannot be applied properly, braking control is automatically
activated. The multi–information display changes as shown in
the illustration and the stop/tail lights on your vehicle and on the
vehicle on the display come on.
Braking control will not ensure that your vehicle will
reduce speed appropriately. Do not rely on dynamic
an appropriate
laser cruise control to prevent collision.
STARTING AND DRIVING
CAUTION
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