2010 Lexus RX 450h User Guide - Page 232

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2-4. Using other driving systems

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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. 591)

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Approach warning

In the following instances, there is a possibility that warnings will not occur:

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When the speed of the vehicle ahead matches or exceeds your vehicle speed

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When the vehicle ahead is traveling at an extremely slow speed

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Immediately after the cruise control speed was set

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At the instant the accelerator is applied

Distance options

Vehicle-to-vehicle distance

Long

Approximately 160 ft. (50 m)

Medium

Approximately 130 ft. (40 m)

Short

Approximately 100 ft. (30 m)

Grille cover

Radar sensor