2010 Lexus RX 450h User Guide 2 - Page 227

2-4. Using other driving systems Example of follow-up cruising When following a vehicle driving slower than the set speed The system continues follow-up cruising while adjusting for changes in the speed of the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by the driver. Example of acceleration When there no longer are vehicles driving slower than the set speed in the lane ahead When the vehicle ahead of you executes a lane change, the system slowly accelerates until the set speed is reached. The system then returns to constant speed cruising. 2 When driving Approach warning When your vehicle is too close to a vehicle ahead, and sufficient automatic deceleration via the cruise control is not possible, the display will flash and a buzzer will sound to alert the driver. An example of this would be if another driver cuts in front of you while you are following a vehicle. Apply the brakes to ensure an appropriate vehicle-to-vehicle distance. n Dynamic radar cruise can be set when l The shift lever is in D. (Recommended) Dynamic radar cruise control can also be set when the shift lever is in the S position and range "4", "5", or "6" has been selected. l Vehicle speed is above approximately 30 mph (50 km/h). n Switching modes The mode cannot be switched to constant speed control mode if vehicle-to-vehicle distance control mode has been used. The mode also cannot be switched from constant speed control to vehicle-to-vehicle distance control mode. Turn the system off by pressing the "ON-OFF" button, and turn it on again. n Accelerating The vehicle can accelerate normally. After acceleration, the set speed resumes. 229