2011 Toyota Prius Navigation Manual - Page 224

ADVANCED PARKING GUIDANCE SYSTEM 6. Position yourself as you would when backing up normally, and rest your hands on the steering wheel without applying any pressure. Check your surroundings and behind the vehicle for safety, and slowly back up, using the brake pedal to control the vehicle's speed. , assistance is canIf you touch celed. If the vehicle's backing up speed is too fast, a warning tone will sound and the message "Speed is too fast." will be displayed. If you continue to back up at that speed, the system will be disabled. Back up at a speed that does not cause the warning tone to sound. The green frame displayed on the screen is approximately the same size as your vehicle. (The green frame displayed when setting the target parking position is the size of a normal parking space.) You can change the target parking position by touching . If you are backing up, or have already moved close to the target parking position, will turn gray, and you will be unable to change the target. Touch the arrows to move the target parking position, and then touch "OK". You can only move the target parking position left or right, and the warning flag will not move even if you adjust the target parking position. 226