Door system for a motor vehicle

A door system for a motor vehicle, comprising:

• door means;
• environmental sensing means for detecting an obstacle in a vicinity of the motor vehicle;
• door sensing means for outputting an output signal as a function of an initiation of opening of the door means;
• and
• control means for detecting an imminent collision between the door means and the obstacle as a function of an output signal of the environmental sensing means and for triggering warning means for outputting a warning in response to detection of an imminent collision between the door means and the obstacle, the control means for distinguishing, during trigger of the warning means, between at least two selectable warning stages as a function of the output signal of the door sensing means.

A door system for a motor vehicle including a tailgate, comprising:

• an environmental sensor configured to detect an obstacle in a surrounding area above the motor vehicle;
• and
• a control unit configured to detect an imminent collision between the tailgate and the obstacle if the tailgate is opened as a function of an output signal of the environmental sensor,
• wherein the tailgate is movable relative to the environmental sensor.

A door system for a motor vehicle including a tailgate, comprising:

• an environmental sensor configured to detect an obstacle in a surrounding area above the motor vehicle;
• and
• a control unit configured to detect an imminent collision between the tailgate and the obstacle if the tailgate is opened as a function of an output signal of the environmental sensor,
• wherein the environmental sensor is arranged on a roof surface of the motor vehicle.