2011 Toyota Prius Navigation Manual - Page 237

ADVANCED PARKING GUIDANCE SYSTEM You can change the target parking position by touching . If you are backing up, or have already moved close to the target will turn gray, and parking position, you will be unable to change the target. Touch the arrows to move the target parking position, and then touch "OK". CAUTION D When backing up, be sure to check your surroundings and behind the vehicle for safety, and back up slowly, depressing the brake pedal to control vehicle speed. D If you seem likely to hit nearby vehicles, obstacles or people, depress the brake pedal to stop the vehicle, then disable the system by touching on the screen. 239