Switch in particular a brake light switch for a motor car

Switch for an automobile comprising an axially displaceable plunger for the actuation of a make-and-break contact of the switch, the plunger protruding into a bore of a locking member which can be rotated relative to the plunger between an adjustment position and a locking position, the plunger and the locking member having complimentary locking elements that are configured in a comb-like manner in an axial direction so that the plunger can be axially adjusted in the adjustment position relative to the locking member, and the locking member can be rotated into the locking position in which the locking elements engage each other in a radial overlapping manner and fix themselves in the axial direction after the axial adjustment of the plunger, the locking member in the locking position being axially kinematically firmly coupled to a separate contact part, which is seated so as to be torque proof and axially movable in a housing of the switch, and which directly actuates the make-and-break contact.