2006 Lexus GS 300 Owners Manual - Page 416

STARTING AND DRIVING CRUISE CONTROL The cruise control allows you to cruise the vehicle at a desired speed over 40 km/h (25 mph) with your foot off the accelerator pedal. Your 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, a great speed change will occur so it is better to drive without the cruise control. When the 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. Turning the system on G31163 CAUTION D To help maintain maximum control of your vehicle, do not use the cruise control when driving in heavy or varying traffic, or on slippery (rainy, icy or snow−covered) or winding roads. D Avoid vehicle speed increases when driving downhill. If the vehicle speed is too fast in relation to the cruise control set speed, cancel the cruise control then downshift the transmission to use engine braking to slow down. To operate the cruise control, push the "ON−OFF" button. This turns the system on. The indicator light in the instrument cluster shows that you can now set your desired cruising speed. Another push on the button will turn the system completely off. When the engine switch is turned off, the "ON−OFF" button is also automatically turned off. To use the cruise control again, push the "ON−OFF" button again to turn it on. CAUTION To avoid accidental cruise control engagement, keep the "ON−OFF" button off when not using the cruise control. 392