A window lifter assembly, comprising an adjustable window pane for a vehicle window lifter, in which the window pane in a closed state is flush with upper and/or lateral body parts which border a window opening, to be closed by the window pane, in a window frame, wherein the window pane is to be raised and lowered along an adjustment axis in order to close or to open up the window opening, wherein the window lifter assembly furthermore has at least the following: - at least one pane guide element which is fixed on the window pane in the region of a lateral pane edge, and - at least one frame-side guide element at which the pane guide element is held displaceably on the window opening, wherein the at least one pane guide element is of multi-part design with at least one first guide part and a second guide part, wherein - the first guide part forms a guide portion via which the pane guide element is held displaceably on the frame-side guide element, - the second guide part forms a connecting portion via which the pane guide element is fixed on the window pane, and - the first guide part and the second guide part are designed as components which are separate from each other, wherein the second guide part is fixable on the window pane independently of the first guide part, and the first guide part is provided to be displaceably positioned on the frame-side guide element in a preassembly position independently of the second guide part for the assembly of the window lifter assembly before the pane guide element is assembled as intended, wherein the pane guide element is assemblable by connecting the first guide part and the second guide part to each other by a relative movement of the guide parts (3, 4) taking place along said adjustment axis of the window pane, characterized in that the first guide part has an intersection for a positioning aid of the window lifter assembly, which positioning aid is to be connected releasably to the first guide part and via which the first guide part is holdable in a preassembly position on the frame-side guide element. - at least one pane guide element which is fixed on the window pane in the region of a lateral pane edge, and - at least one frame-side guide element at which the pane guide element is held displaceably on the window opening, wherein the at least one pane guide element is of multi-part design with at least one first guide part and a second guide part, wherein - the first guide part forms a guide portion via which the pane guide element is held displaceably on the frame-side guide element, - the second guide part forms a connecting portion via which the pane guide element is fixed on the window pane, and - the first guide part and the second guide part are designed as components which are separate from each other, wherein the second guide part is fixable on the window pane independently of the first guide part, and the first guide part is provided to be displaceably positioned on the frame-side guide element in a preassembly position independently of the second guide part for the assembly of the window lifter assembly before the pane guide element is assembled as intended, - the first guide part forms a guide portion via which the pane guide element is held displaceably on the frame-side guide element, - the second guide part forms a connecting portion via which the pane guide element is fixed on the window pane, and - the first guide part and the second guide part are designed as components which are separate from each other, wherein the second guide part is fixable on the window pane independently of the first guide part, and the first guide part is provided to be displaceably positioned on the frame-side guide element in a preassembly position independently of the second guide part for the assembly of the window lifter assembly before the pane guide element is assembled as intended, wherein the pane guide element is assemblable by connecting the first guide part and the second guide part to each other by a relative movement of the guide parts (3, 4) taking place along said adjustment axis of the window pane, characterized in that the first guide part has an intersection for a positioning aid of the window lifter assembly, which positioning aid is to be connected releasably to the first guide part and via which the first guide part is holdable in a preassembly position on the frame-side guide element.