Abstract: A vehicle door module, comprising a panel fitted with various items of equipment including a window lifter of the type having two rails for guiding runners supporting the window and having cables for driving the runners, the window lifter likewise possessing a drum which is disposed in a cover and on which the cables are wound. An element for fixing the cover to the panel, and for controlling the rotation of the drum are disposed on a side of the panel opposite the side on which the rails, the cables, the cover and the drum are positioned; the cover of the of the drum is molded integrally with the panel and controlling the drum are fixed in a leaktight manner to the panel and to the cover. The integration of the cover into the supporting panel reduces the number of pieces in the module and makes it possible to obtain greater integration, while ensuring the necessary seal between the two faces of the panel at the location of the fixing elements for driving the drum in rotation.