Lighting device for a vehicle, with anti-vibration system

The device (2) has a lighting module (4) with an optical unit i.e. reflector (6), to reflect luminous rays emitted by a luminous source (8) as a lighting beam. A module support i.e. plate (38), is provided to support the module. The module is mounted movable with respect to the support. A cylindrical and elongated movable element i.e. rod (28), is mounted movable in translation on the support. An end of the element is engaged by contact with a contact surface (26) of the module to stabilize a position of the module with respect to the support. The element is activated by an electromagnet (30).