2006 Lexus GS 300 Owners Manual - Page 1065

STARTING AND DRIVING 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. CAUTION D In the conventional (fixed speed) cruise control mode, an approach warning does not activate even if you are too close to the vehicle ahead, as neither the presence of the vehicle ahead nor the vehicle−to−vehicle distance is detected. Pay special attention to the distance between your vehicle and the vehicle ahead. Always confirm the setting in the multi−information display. D The conventional (fixed speed) cruise control mode of the dynamic radar cruise control should not be used in the following conditions, which could result in death or serious injury. ♦ To help maintain maximum control of your vehicle, do not use fixed speed control mode when using dynamic radar cruise control while driving in heavy or varying traffic, or on slippery (rainy, icy or snow−covered) or winding roads. ♦ Avoid vehicle speed increasing when driving downhill. If the vehicle speed is too fast in relation to the preset speed in the fixed speed control mode, cancel the fixed control mode and then downshift the transmission to use engine braking to slow down. 419