2006 Lexus GS 300 Owners Manual - Page 421

STARTING AND DRIVING (a) Dynamic radar cruise control operations If no vehicle is running ahead of you: 1 Cruising at a fixed speed: If there is no vehicle detected ahead, your cruising speed is maintained at the preset speed from about 45 km/h (28 mph) to about 135 km/h (85 mph). The preset speed is displayed in the multi−information display. For the vehicle speed setting, see "Setting operation " on page 402. Deceleration cruising function: If a slower moving vehicle is detected ahead of you, your vehicle cruising speed decreases within the range of about 40 km/h (25 mph) to about 135 km/h (85 mph). The multi−information display shows the preset speed, the detected vehicle ahead and selected vehicle−to−vehicle distance. If your vehicle gets closer to the vehicle ahead because of insufficient automatic deceleration, then the warning tone warns you to also manually apply brakes. Follow−up cruising function: After deceleration, your vehicle cruising speed changes in proportion to the speed of the vehicle ahead to maintain an appropriate distance from your vehicle to the vehicle ahead. The vehicle−to−vehicle distance can be changed. For details, see "Changing vehicle−to−vehicle distance setting" on page 406. Acceleration cruising function: If the vehicle ahead changes lanes, your vehicle cruising speed will be gradually increased up to the preset speed, and your vehicle resumes fixed−speed cruising. G31012 If a vehicle is detected ahead of you: 2 3 The dynamic radar cruise control function operates automatically and depending on whether a vehicle is detected ahead may change the speed of your vehicle as follows: 4 397