Drive system for a sliding roof or a window opener

A system comprising at least one shades and/or at least one cover and at least one drive unit for moving the at least one shade and/or the at least one cover;

• the drive unit comprising:
• a guide element;
• a function unit that is guided by the guide element;
• and
• a carrier that is guided by the guide element and coupleable to the function unit;
• wherein the carrier comprises a coupling element moveable relative to a main body of the carrier:
• to bring about an engaged state when the coupling element is arranged in a first position inside a receptacle of the guide element to secure the carrier to the guide element, and
• to bring about a coupled state when the coupling element is arranged in a second position inside a recess of the function unit such that the carrier is moved together with the function unit;
• and
• wherein the carrier has a securing element which is movable relative to the main body of the carrier and which in a fixing position prevents movement of the coupling element from the first position into the second position.