Lexus LS460 2011 Owner's Manual page 273


The following are detected when the vehicle has been stopped by system
control:
• The driver is not wearing a seat belt.
• The driver's door is opened.
• The trunk or hood is opened.
• The vehicle has been stopped for about 3 minutes.
If vehicle-to-vehicle distance control driving is automatically canceled for
any other reason, there may be a malfunction in the system. Contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional.

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 16 km/h (10 mph)
below the set vehicle speed.
At this time, the memorized set speed is not retained.

Actual vehicle speed falls below approximately 40 km/h (25 mph).

VSC is activated.

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 or plastic objects, cannot be detected by the obstruction sensor.)
Adaptive cruise control with full-speed range is canceled if an obstruction is
detected.
LS460_EE
2-4. Using other driving systems
Grille cover
Radar sensor
2
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