2006 Lexus GS 300 Owners Manual - Page 1068

STARTING AND DRIVING In the following cases, the preset speed automatically cancels out: a. The vehicle speed falls below about 40km/h (25 mph). b. If the vehicle speed drops 16 km/h (10 mph) below the preset speed, the preset speed will also automatically be cancelled. c. The control lever is pressed downward in the "- SET" direction and held at less than about 45 km/h (28 mph). (45 km/h (28 mph) is designated as a lower preset speed limit .) If the vehicle speed falls below about 40 km/h (25 mph), the preset speed data is cleared and you must set the speed from the beginning. If cancelled by the above cases, the multi−information display shows nothing and the conventional cruise control enters the ready mode. If the preset speed automatically cancels out for other than the above reasons, do not operate the cruise control. Although it is no problem to continue driving, have your vehicle checked by your Lexus dealer at the earliest opportunity. 3 Resetting to a faster speed Press the control lever upward in the "+ RES" direction and hold it. Release the lever when the desired speed is attained. While the lever is held upward, the vehicle will gradually gain speed. When the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can be increased 1.6 km/h (1 mph) each time by pressing the control lever upward in the "+ RES" direction quickly within 0.6 seconds. A quicker way to reset the speed is to accelerate and then press the control lever downward in the "- SET" direction. 422