2010 Lexus IS 250 Owners Manual - Page 275

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2-4. Using other driving systems

2

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Automatic cancelation of constant speed control

The cruise control will stop maintaining the vehicle speed in the following situations:

●

Actual vehicle speed is more than approximately 10 mph (16 km/h) below the

set vehicle speed.

At this time, the memorized set speed is not retained.

●

Vehicle speed falls below approximately 25 mph (40 km/h).

●

VSC is activated.

●

When the shift lever is in the D position and any of the ranges 1 through 3 is

selected using the “-” paddle shift switch.

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Vehicle-to-vehicle distance settings

Select a distance from the table below. Note that the distances shown correspond

to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle distance increases/

decreases in accordance with vehicle speed.

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Radar sensor and grille cover

Always keep the sensor and grille cover clean to ensure that the vehicle-to-vehicle

distance control operates properly. (Some obstructions, such as snow, ice and plas-

tic objects, cannot be detected by the obstruction sensor.)

Dynamic radar cruise control is canceled if an obstruction is detected.

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Warning lights, messages and buzzers for dynamic radar cruise control

Warning lights, messages and buzzers are used to indicate a system malfunction or

to inform the driver of the need for caution while driving. (

→

P. 478)

Distance options

Vehicle-to-vehicle distance

Long

Approximately 210 ft. (65 m)

Medium

Approximately 150 ft. (45 m)

Short

Approximately 100 ft. (30 m)

Grille cover

Radar sensor