Method for providing a recommendation signal for controlling at least one function in a vehicle, wherein the at least one function can be executed on at least one user device which is or can be arranged at least temporarily in the vehicle, wherein the method has the following steps: setting up at least one interface to the at least one user device at the latest during a running time of the method; recording the at least one function at the latest during the running time of the method via the at least one set-up interface, wherein knowledge about the at least one function is not acquired until in the recording step; linking at least one useful signal (108; 501, 502, 503, 504) which is read in by the at least one interface to at least one user device and represents useful data about a use, by a user, of the at least one function which is recorded at the latest during the running time of the method, with situation data which represent a contextual situation detected by at least one detection device assigned to the vehicle, during the use in order to generate a behaviour data set; carrying out a comparison of the current situation data, which represent the current contextual situation detected by the at least one detection device assigned to the vehicle, with at least one control data set which is derived from the at least one behaviour data set, wherein the behaviour data set represents learned data about a situation-related, routine use of the at least one function by a user, wherein the behaviour data set is generated by linking the at least one useful signal (108; 501, 502, 503, 504) which is read in by the at least one interface to at least one user device and which represents useful data about a use, by a user, of the at least one function which is recorded at the latest during the running time of the method, with situation data which represent a contextual situation during the use, detected by the at least one detection device which is assigned to the vehicle; and generating the recommendation signal in accordance with a result of the comparison which is carried out in the carrying out step, wherein the recommendation signal represents a recommendation to control the at least one function in the vehicle. setting up at least one interface to the at least one user device at the latest during a running time of the method; recording the at least one function at the latest during the running time of the method via the at least one set-up interface, wherein knowledge about the at least one function is not acquired until in the recording step; linking at least one useful signal (108; 501, 502, 503, 504) which is read in by the at least one interface to at least one user device and represents useful data about a use, by a user, of the at least one function which is recorded at the latest during the running time of the method, with situation data which represent a contextual situation detected by at least one detection device assigned to the vehicle, during the use in order to generate a behaviour data set; carrying out a comparison of the current situation data, which represent the current contextual situation detected by the at least one detection device assigned to the vehicle, with at least one control data set which is derived from the at least one behaviour data set, wherein the behaviour data set represents learned data about a situation-related, routine use of the at least one function by a user, wherein the behaviour data set is generated by linking the at least one useful signal (108; 501, 502, 503, 504) which is read in by the at least one interface to at least one user device and which represents useful data about a use, by a user, of the at least one function which is recorded at the latest during the running time of the method, with situation data which represent a contextual situation during the use, detected by the at least one detection device which is assigned to the vehicle; and generating the recommendation signal in accordance with a result of the comparison which is carried out in the carrying out step, wherein the recommendation signal represents a recommendation to control the at least one function in the vehicle.