The invention discloses an assistance system that can be controlled by means of voice inputs, having a functional device and a plurality of voice recognition modules. The invention relates to an assistance system (3) that can be controlled at least to some extent by means of voice inputs (12), having a functional device (6) and a voice recognition device (5), wherein the voice recognition device has at least one first voice recognition module (9), which attributes voice inputs (12) a meaning on the basis of a first system of rules, and a second voice recognition module (10), which attributes voice inputs (12) a meaning on the basis of a second system of rules, wherein the results from one of the two voice recognition modules (9, 10) are respectively taken as a basis for ascertaining which voice sections (12a, 12b) are processed by the first voice recognition module (9) and which voice sections are processed by the second voice recognition module (10). A first voice recognition module (9) can therefore recognise a work command, for example a navigation command, while a second voice recognition module (10) can recognise, in an auxiliary language, an address statement that is not stored owing to unavailable translations of address databases into the user language.