2004 Lexus LS 430 User Guide - Page 354

STARTING AND DRIVING (c) Setting operation 31L331 After bringing the vehicle to the desired speed, press the control lever downward in the "SET/COAST" direction and release it. This sets the vehicle at that speed. At this time, the multi-information display indicates settings such as the preset vehicle speed, whether a vehicle is present ahead and selected vehicle-to-vehicle distance. If there is no vehicle detected ahead, the dynamic radar/laser cruise control screen does not display the vehicle ahead. At this time, you may take your foot off the accelerator pedal. If you need to accelerate - for example, when passing - depress the accelerator pedal enough for the vehicle to exceed the preset speed. When you release the accelerator pedal, the vehicle will return to the control prior to acceleration. You cannot set a desired speed if the master warning light comes on, the warning tone sounds and the multi-information display indicates a warning message such as "Cruise not Available", "Clean Radar Sensor" or "Check Cruise System". If any of the above messages appears on the display, see "Vehicle-to-vehicle distance control mode failure warning" on page 347. If you turn off the main switch while the warning message is displayed, the warning message turns off and the multi-information display switches to another screen. If no warning message appears on the display, when you turn the main switch on again, the setting can be made. You can change the dynamic radar/laser cruise control screen to another screen even while the warning message is displayed. "Each function is described below. 1 Setting the desired speed The transmission must be in "D", "6" (sixth range), "5" (fifth range) or "4"(fourth range) before you set the cruise control speed. 336