The method for warning a driver of a motor vehicle of the presence of a moving object which is external to the vehicle, on a carriageway adjoining a parking space, when the motor vehicle is moving out of the parking space, the method comprising:
- detecting the object by sensor means;
- determining a current distance of the object from the motor vehicle using sensor data of the sensor means;
- generating an image representation which shows a plan view of at least one area of the motor vehicle and in which the distance of the object from the motor vehicle is indicated visually;
- and
- warning the driver by displaying the image representation on a visual display device.