A rotating lighting module for vehicles, comprising at least one light source, at least one reflector and at least one actuator to rotate the reflector relative to the light source around a first axis; wherein the reflector forms, together with a lens assembled angularly rigid therewith, a rotating optical unit powered by said actuator and wherein the light source, the actuator and the rotating optical unit are operatively associated with a framed support holding rigid in a fixed position the light source and bearing in idling manner said rotating optical unit; the light source being borne by a printed circuit board also bearing electronic components to control the light source; wherein, in combination: i)- the framed support is formed by a rigid metallic structure; ii)- the rotating optical unit is supported in idly manner solely by a bottom portion of the framed support and forms a first sub-assembly, said sub-assembly being completely independent in rotation of an upper portion of the framed support bearing the at least one light source; iii)- the at least one light source with the printed circuit board and the electronic components forming a second sub-assembly supported solely by the upper portion of the framed support; iv)- such as the first sub-assembly is mechanically disconnected in rotation from the second sub-assembly; and wherein the first sub-assembly comprises a rigid box-like structure connecting the reflector with the lens facing to each other, and a shaft having a symmetry axis coinciding with the first axis and projecting in cantilever fashion from a bottom of the rigid box-like structure; the shaft being housed entirely within a first through seat provided in the bottom portion of the framed support and being supported by a first and a second rolling bearing (22,23) housed within opposite ends (24,25) of the first through seat, coupled idly with the shaft at respective opposite ends (26,27) thereof; said shaft being the sole support and rotational guide for the rotating optical unit; characterized in that said shaft is of a tubular shape, being axially crossed by a second through seat, the second through seat being delimited laterally along the first axis by an annular wall of the shaft; said shaft being configured such as to be elastically deformable in radial direction at least at the said opposite ends (26,27) thereof. i)- the framed support is formed by a rigid metallic structure; ii)- the rotating optical unit is supported in idly manner solely by a bottom portion of the framed support and forms a first sub-assembly, said sub-assembly being completely independent in rotation of an upper portion of the framed support bearing the at least one light source; iii)- the at least one light source with the printed circuit board and the electronic components forming a second sub-assembly supported solely by the upper portion of the framed support; iv)- such as the first sub-assembly is mechanically disconnected in rotation from the second sub-assembly; and wherein the first sub-assembly comprises a rigid box-like structure connecting the reflector with the lens facing to each other, and a shaft having a symmetry axis coinciding with the first axis and projecting in cantilever fashion from a bottom of the rigid box-like structure; the shaft being housed entirely within a first through seat provided in the bottom portion of the framed support and being supported by a first and a second rolling bearing (22,23) housed within opposite ends (24,25) of the first through seat, coupled idly with the shaft at respective opposite ends (26,27) thereof; said shaft being the sole support and rotational guide for the rotating optical unit;