2006 Lexus GS 300 Owners Manual - Page 436

STARTING AND DRIVING G13075 If the system malfunction is detected when dynamic radar cruise control is in the "RADAR READY" mode or operating, the above message appears. If this message appears, stop your vehicle in a safe place, turn the engine switch off, and then restart it to reset the system. If the setting still cannot be made or the same message appears again, the system might have malfunctioned. Although it is no problem to continue driving, contact your Lexus dealer. Conventional (fixed speed) cruise control mode This mode allows you to cruise at a desired speed over about 45 km/h (28 mph) with your foot off the accelerator pedal. Cruising speed can be maintained, although a slight speed change may occur when driving up or down a gradient, within the limits of engine performance. On steeper hills, the speed will change more radically so it is better to drive without cruise control. When cruise control is on, the driving pattern of the automatic transmission is fixed in the normal mode, regardless of the position of the selector switch. NOTICE While you are cruising with the dynamic radar cruise control on, if the master warning light comes on, the "CRUISE" indicator light flashes, "CHECK CRUISE SYSTEM" appears on the multi−information display and the warning tone sounds, turn the engine switch off and then on again. If the function is cancelled again after setting or if settings cannot be made, the dynamic radar cruise control system may be malfunctioning. Although it is no problem to continue driving, have your vehicle checked by your Lexus dealer. 412