Lexus IS350 AWD Owner's Manual page 257

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 at or 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 mode is automatically canceled in the following situ-
ations:
Actual vehicle speed falls at or 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.
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When snow mode is set.
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The sensor cannot detect correctly because it is covered in some way.
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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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Constant speed control mode is automatically canceled 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).
●
VSC is activated.
●
TRAC is activated for a period of time.
●
When the VSC or TRAC system is turned off.
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Pre-collision braking is activated.
●
If constant speed control mode is automatically canceled for any other reason, there may
be a malfunction in the system. Contact your Lexus dealer.
Brake system operation sound
■
If the brakes are applied automatically while the vehicle is in vehicle-to-vehicle distance
control mode, a brake system operation sound may be heard. This does not indicate a
malfunction.
Warning messages and buzzers for dynamic radar cruise control
■
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution while driving. If a warning message is shown on the
multi-information display, read the message and follow the instructions.
IS350 AWD/IS350/IS300 AWD/IS300_U
4-5. Using the driving support systems
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