2011 Toyota Prius Owners Manual - Page 254

2-4. Using other driving systems n Dynamic radar cruise control can be set when l The shift position is in "D". 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-tovehicle 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. However, during vehicle-to-vehicle distance control mode, the vehicle speed may decrease below the set speed in order to maintain the distance to the vehicle ahead. n Automatic cancelation of vehicle-to-vehicle distance control Vehicle-to-vehicle distance control driving is automatically canceled in the following situations: l Actual vehicle speed falls below approximately 25 mph (40 km/h). l Enhanced VSC is activated. l The sensor cannot operate correctly because it is covered in some way. l The windshield wipers are operating at high speed. If vehicle-to-vehicle distance control driving is automatically canceled for any other reason, there may be a malfunction in the system. Contact your Toyota dealer. 228 PRIUS_U (OM47685U) DVD