System for collecting defect data relating to components (36, 38) in a passenger cabin of a vehicle, having - a component identification device for identifying an affected component, - a malfunction selection device which is connected to the component identification device and is intended to select a malfunction of the identified component from a predefined set of component-specific malfunctions, - a localization device for capturing a position of the affected component in the passenger cabin, which localization device is connected to the component identification device, and - a showing device (10, 32) for marking a relevant component from a certain distance, wherein the showing device (10, 32) is in the form of an optical showing device which contains a distance measuring device for determining the distance between the showing device and the relevant component (36, 38) and a position sensor for capturing the spatial orientation of the showing device during marking, - wherein the localization device is in contact with the showing device (10, 32), in order to determine the three-dimensional position of the showing device (10, 32) inside the passenger cabin, and - is set up to identify components in the vicinity of the showing device (10, 32) on the basis of the three-dimensional position of the showing device (10, 32) with the aid of the component identification device, - by virtue of the component identification device being set up to filter a component group having one or more components of the passenger cabin, from a component database containing component identification data and position data relating to components, for a selection dialogue with the aid of the captured position of the affected component, which component group is in the vicinity of the position of the affected component (36, 38), as captured by means of the showing device (10, 32) positioned in the vicinity of the affected component (36, 38). - a component identification device for identifying an affected component, - a malfunction selection device which is connected to the component identification device and is intended to select a malfunction of the identified component from a predefined set of component-specific malfunctions, - a localization device for capturing a position of the affected component in the passenger cabin, which localization device is connected to the component identification device, and - a showing device (10, 32) for marking a relevant component from a certain distance, wherein the showing device (10, 32) is in the form of an optical showing device which contains a distance measuring device for determining the distance between the showing device and the relevant component (36, 38) and a position sensor for capturing the spatial orientation of the showing device during marking, - wherein the localization device is in contact with the showing device (10, 32), in order to determine the three-dimensional position of the showing device (10, 32) inside the passenger cabin, and - is set up to identify components in the vicinity of the showing device (10, 32) on the basis of the three-dimensional position of the showing device (10, 32) with the aid of the component identification device, - by virtue of the component identification device being set up to filter a component group having one or more components of the passenger cabin, from a component database containing component identification data and position data relating to components, for a selection dialogue with the aid of the captured position of the affected component, which component group is in the vicinity of the position of the affected component (36, 38), as captured by means of the showing device (10, 32) positioned in the vicinity of the affected component (36, 38).