Push-button switch assembly having means for indicating a switch status, comprising: - an actuation head for actuating the push-button switch assembly, having a disc-shaped upper part and a tubular lower part, - a sleeve-shaped push-button guide which is coupled to the actuation head such that, in relation to a central longitudinal axis of the push-button switch assembly, the upper part is arranged above the push-button guide and the lower part surrounds the push-button guide, - a sleeve-shaped locking unit for determining a switch status of the push-button switch assembly, which is arranged within the push-button guide in relation to the longitudinal axis and can be transferred between a first and a second locking state by means of the actuation head, wherein the locking unit has a plunger sleeve and an annular detent catch coupled to the plunger sleeve, which delimit a central through-opening through the locking unit perpendicular to and along the longitudinal axis in a predetermined manner, wherein the detent catch has a multipiece design and a first detent catch element and a second detent catch element which are preloaded by means of two spring elements (65, 66) which, in relation to the longitudinal axis, push the detent catch elements (611, 612) outward, and - a light guide for guiding light, which is coupled to the actuation head such that, in relation to the longitudinal axis, at least portions of the light guide are arranged within the actuation head and within the push-button guide, wherein the light guide, in relation to the longitudinal axis, extends with a top end in a predetermined position through the actuation head and with a bottom end, it extends through the through-opening of the locking unit such that the push-button switch assembly can be illuminated in a predetermined manner by means of a light beam that can be coupled into the light guide at the bottom end. - an actuation head for actuating the push-button switch assembly, having a disc-shaped upper part and a tubular lower part, - a sleeve-shaped push-button guide which is coupled to the actuation head such that, in relation to a central longitudinal axis of the push-button switch assembly, the upper part is arranged above the push-button guide and the lower part surrounds the push-button guide, - a sleeve-shaped locking unit for determining a switch status of the push-button switch assembly, which is arranged within the push-button guide in relation to the longitudinal axis and can be transferred between a first and a second locking state by means of the actuation head, wherein the locking unit has a plunger sleeve and an annular detent catch coupled to the plunger sleeve, which delimit a central through-opening through the locking unit perpendicular to and along the longitudinal axis in a predetermined manner, wherein the detent catch has a multipiece design and a first detent catch element and a second detent catch element which are preloaded by means of two spring elements (65, 66) which, in relation to the longitudinal axis, push the detent catch elements (611, 612) outward, and - a light guide for guiding light, which is coupled to the actuation head such that, in relation to the longitudinal axis, at least portions of the light guide are arranged within the actuation head and within the push-button guide, wherein the light guide, in relation to the longitudinal axis, extends with a top end in a predetermined position through the actuation head and with a bottom end, it extends through the through-opening of the locking unit such that the push-button switch assembly can be illuminated in a predetermined manner by means of a light beam that can be coupled into the light guide at the bottom end.