Lighting device for motor vehicle including a protective guide for an adjustment tool

The device (100) has a set of reflectors, and a support for the set of reflectors. A screw (106) allows regulation of the position of the reflectors with regard to the support. A set of guidance units (114, 116) is arranged for a set of adjustment tools i.e. screw drivers (400, 402), for adjustment intended to cooperate with the screw. The set of guidance units is arranged so as to limit the access of the adjustment tools for adjustment of the screw according to predetermined positions.