An electromechanical subassembly has a cover control module equipped with a printed circuit and with first contacts, a mechanical module equipped with second contacts and a support module for securing the cover control module and the mechanical module to the support module. The support module includes first electrical terminals for contacting the first contacts, second electrical terminals for contacting the second contacts and at least one electrical connector for contacting the electromechanical subassembly and the control circuit forming part of the cover.