2006 Lexus GS 300 Owners Manual - Page 1057

STARTING AND DRIVING 4 Resetting to a slower speed 5 Resuming the preset speed Press the control lever downward in the "- SET" direction and hold it. The displayed speed will decrease in increments of 5 mph (for the U.S.A.) or 5 km/h (for Canada). Release the lever when the desired speed is attained. The vehicle will gradually decrease to the displayed speed. A quicker way to reset the preset speed is to depress the brake pedal and then press the control lever downward in the "- SET" direction. If the control lever is released when the vehicle speed exceeds the upper limit of the preset speed traveling downhill while you are pressing the control lever downward, the system will memorize the upper limit of the preset speed as a preset speed. Even if you downshift the transmission from "D" or "6" (sixth range) to "5" (fifth range), or from "D" or "5" (fifth range) to "4" (fourth range) in the vehicle−to−vehicle distance control mode, engine braking will not be enabled because this mode is not cancelled. To decrease the vehicle speed, reset to a slower speed with the cruise control lever or depress the brake pedal. If you use the brake pedal, cruise control is cancelled. If the preset speed has been cancelled, when you push the lever up in the "+ RES" direction while "RADAR READY" shows up on the multi−information display and at a vehicle speed of about more than 40 km/h (25 mph), the speed set prior to cancellation will be restored. During follow−up cruising, if there are no vehicles running ahead because they have changed lanes, your vehicle will accelerate gradually up to the preset speed. 411