Dynamic Radar/Laser Cruise Control Operations - Lexus 2004 LS430 Owner's Manual

(a) Dynamic radar/laser cruise control
operations
31L360b
The dynamic radar/laser cruise control function operates
automatically and depending on whether a vehicle is
detected ahead may change the speed of your vehicle as
follows:
STARTING AND DRIVING
If no vehicle is running ahead of you:
1 Cruising at a fixed speed: If there is no vehicle detected
ahead, your cruising speed is maintained at the preset
speed from about 45 km/h (28 mph) to about 135 km/h (85
mph). The preset speed is displayed in the
multi-information display. For the vehicle speed setting,
see "Setting operation " on page 338.
If a vehicle is detected ahead of you:
2 Deceleration cruising function: If a slower moving
vehicle is detected ahead of you, your vehicle cruising
speed decreases within the range of about 40 km/h (25
mph) to about 135 km/h (85 mph). The multi-information
display shows the preset speed, the detected vehicle
ahead and selected vehicle-to-vehicle distance. If your
vehicle gets closer to the vehicle ahead because of
insufficient automatic deceleration, then the warning tone
warns you to also manually apply brakes.
3 Follow-up cruising function: After deceleration, your
vehicle cruising speed changes in proportion to the speed
of the vehicle ahead to maintain an appropriate distance
from your vehicle to the vehicle ahead.
vehicle-to-vehicle distance can be changed. For details,
see "Changing vehicle-to-vehicle distance setting" on
page 344.
4 Acceleration cruising function: If the vehicle ahead
changes lanes, your vehicle cruising speed will be
gradually increased up to the preset speed, and your
vehicle resumes fixed-speed cruising.
The
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