Sliding door system for installation into a building wall, wherein the sliding door system comprises: a sliding door comprising at least a first door leaf, a second door leaf, and a pivoting mechanism; and a housing for installation into the building wall, wherein the housing has a first door opening and a second door opening opposite the first door opening; wherein the sliding door is mounted in the housing so as to be displaceable beyond the first door opening and the second door opening on both sides; wherein the pivoting mechanism is designed to convert a displacement movement of the sliding door into a pivoting movement of the first door leaf and the second door leaf, so that the first door leaf exposes the first door opening and the second door leaf exposes the second door opening in a first position of the sliding door and said door leaves close said door openings in a second position of the sliding door, wherein the pivoting mechanism serves to change the distance between the first door leaf and the second door leaf, and the pivoting mechanism makes it possible, in order to reach the first position, to move the door leaves (114, 116) so close to one another that the door leaves (114, 116) can be inserted into the left housing portion, wherein the pivoting mechanism makes it possible, in the second position, to spread the door leaves (114, 116) so far apart that the outer surfaces of the door leaves (114, 116) are flush with the outer surface of the housing, wherein the first door leaf and the second door leaf are arranged, in the first position, at least partially in a left housing portion of the housing located on the left next to the first door opening and the second door opening and, in the second position, at least partially between the first door opening and the second door opening, characterized in that by deactivation of the pivoting mechanism, the sliding door is displaceable beyond the first door opening and the second door opening into a third position, in which at least one component (118, 120; 400, 402, 404, 406, 408, 410) to be serviced of the sliding door system is accessible via the first door opening and/or the second door opening from outside the housing, wherein the component (118, 120; 400, 402, 404, 406, 408, 410) to be serviced is accessible exclusively in the third position, and/or from which the sliding door is removable from the housing via the first door opening and/or the second door opening, and in that in the third position, the first door leaf and the second door leaf are arranged at least partially in a right housing portion of the housing located on the right next to the first door opening and the second door opening. a sliding door comprising at least a first door leaf, a second door leaf, and a pivoting mechanism; and a housing for installation into the building wall, wherein the housing has a first door opening and a second door opening opposite the first door opening; wherein the sliding door is mounted in the housing so as to be displaceable beyond the first door opening and the second door opening on both sides; wherein the pivoting mechanism is designed to convert a displacement movement of the sliding door into a pivoting movement of the first door leaf and the second door leaf, so that the first door leaf exposes the first door opening and the second door leaf exposes the second door opening in a first position of the sliding door and said door leaves close said door openings in a second position of the sliding door, wherein the pivoting mechanism serves to change the distance between the first door leaf and the second door leaf, and the pivoting mechanism makes it possible, in order to reach the first position, to move the door leaves (114, 116) so close to one another that the door leaves (114, 116) can be inserted into the left housing portion, wherein the pivoting mechanism makes it possible, in the second position, to spread the door leaves (114, 116) so far apart that the outer surfaces of the door leaves (114, 116) are flush with the outer surface of the housing, wherein the first door leaf and the second door leaf are arranged, in the first position, at least partially in a left housing portion of the housing located on the left next to the first door opening and the second door opening and, in the second position, at least partially between the first door opening and the second door opening, characterized in that by deactivation of the pivoting mechanism, the sliding door is displaceable beyond the first door opening and the second door opening into a third position, in which at least one component (118, 120; 400, 402, 404, 406, 408, 410) to be serviced of the sliding door system is accessible via the first door opening and/or the second door opening from outside the housing, wherein the component (118, 120; 400, 402, 404, 406, 408, 410) to be serviced is accessible exclusively in the third position, and/or from which the sliding door is removable from the housing via the first door opening and/or the second door opening, and in that in the third position, the first door leaf and the second door leaf are arranged at least partially in a right housing portion of the housing located on the right next to the first door opening and the second door opening.