Lexus GS 450h 2008 Owner's Manual page 176

2-4. Using other driving systems
The dynamic radar cruise can be set when
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The shift lever is in "D" or the "4", "5" or "6" range of "S".
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Vehicle speed is between approximately 27 mph (43 km/h) and 87 mph (139
●
km/h).
Accelerating
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The vehicle can be accelerated normally.
Automatically canceling vehicle-to-vehicle distance control
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Vehicle-to-vehicle distance control driving is automatically canceled in the follow-
ing situations.
Actual vehicle speed falls below 25 mph (40 km/h)
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VSC is activated
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The windshield wipers are operating at high speed
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The mode select switch is set to snow mode
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The sensor cannot operate correctly because it is covered in some way
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Vehicle-to-vehicle distance control driving must be reset by turning the "ON-
OFF" button on again.
If vehicle-to-vehicle distance control driving is automatically canceled for any other
reason, there may be a malfunction in the system. Contact your Lexus dealer.
Automatically canceling constant speed control
■
The set speed is automatically canceled in the following situations.
Actual vehicle speed is more than 10 mph (16 km/h) below the preset vehicle
●
speed
Actual vehicle speed falls below 25 mph (40 km/h)
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VSC is activated
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