2006 Lexus GS 300 Owners Manual - Page 1069

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. Release the lever when the desired speed is attained. While the lever is held downward, the vehicle speed will gradually decrease. 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 lowered 1.6 km/h (1 mph) each time by pressing the control lever downward in the "- SET" direction quickly within 0.6 seconds. 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. Even if you downshift the transmission from the "D" or "6" (sixth range) to "5" (fifth range), or from "D" or "5" (fifth range) to "4" (fourth range) in the conventional cruise control mode, engine braking will not be applied because this mode is not cancelled. To slow down, reset the cruise control 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 is cancelled by pulling the control lever, by depressing the brake pedal or vehicle stability control activation, pushing the lever up in the "+ RES" direction will restore the speed set prior to cancellation. However, once the vehicle speed falls below about 40 km/h (25 mph), the preset speed will not be resumed. (c) Conventional cruise control mode failure warning G13075 If the system malfunction is detected when the conventional cruise control mode is in the ready mode or operating, the master warning light comes on, a warning tone sounds and the above message appears. If this message appears, push the "ON−OFF" button to turn the system off and then push it again to turn it on. 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. 423