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Dynamic radar cruise control can be set when
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The shift lever is in D.
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Range 4 or higher of D has been selected by using the paddle shift switch.
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Vehicle speed is above approximately 30 mph (50 km/h).
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Accelerating after setting the vehicle speed
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The vehicle can accelerate by operating the accelerator pedal. After accelerating, the
set speed resumes. However, during vehicle-to-vehicle distance control mode, the vehi-
cle speed may decrease below the set speed in order to maintain the distance to the pre-
ceding vehicle.
Automatic cancelation of vehicle-to-vehicle distance control mode
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Vehicle-to-vehicle distance control driving is automatically canceled in the following situ-
ations:
Actual vehicle speed falls below approximately 25 mph (40 km/h).
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VSC is activated.
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TRAC is activated for a period of time.
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When the VSC or TRAC system is turned off by pressing the VSC OFF switch.
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The sensor cannot detect correctly because it is covered in some way.
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The windshield wipers are operating at high speed (when the wipers are in AUTO
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mode or the high speed wiper operation).
When snow mode is set.
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Pre-collision braking is activated.
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If vehicle-to-vehicle distance control mode is automatically canceled for any other rea-
son, there may be a malfunction in the system. Contact your Lexus dealer.
Automatic cancelation of constant speed control mode
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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 vehi-
●
cle speed.
Actual vehicle speed falls below approximately 25 mph (40 km/h).
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VSC is activated.
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TRAC is activated for a period of time.
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When the VSC or TRAC system is turned off by pressing the VSC OFF switch.
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Pre-collision braking is activated.
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IS350/300/200t_U (OM53D18U)
4-5. Using the driving support systems
209
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Table of Contents
Troubleshooting
