Method for updating instructions for servicing and repairing an industrial truck, wherein the industrial truck has a control computer which can transmit data to a central service computer via data transmission means, with the steps of: - detecting malfunctions of the industrial truck by means of the control computer, - generating fault codes corresponding to the malfunctions by means of the control computer, - transmitting the fault codes to the central service computer via the data transmission means, - generating instructions for servicing and repairing the industrial truck and/or information relating to required spare parts by means of the central service computer, wherein the instructions for servicing and repairing the industrial truck are provided by the software on the central service computer, characterized by - updating the instructions on the central service computer from experience with previous repairs, and reports produced by service technicians, wherein feedback is provided by the service technicians in predefined electronic forms, service reports or in any other way and is processed automatically by the software on the central service computer, wherein information relating to a repair time and a possible repair date is made available to the user of the industrial truck via a web application, wherein the service computer selects an associated spare parts directory based on a transmitted or determined serial number of the industrial truck, and wherein, for spare parts corresponding to a determined most probable cause of the fault, the service computer initiates a removal of these spare parts from a spare parts warehouse. - detecting malfunctions of the industrial truck by means of the control computer, - generating fault codes corresponding to the malfunctions by means of the control computer, - transmitting the fault codes to the central service computer via the data transmission means, - generating instructions for servicing and repairing the industrial truck and/or information relating to required spare parts by means of the central service computer, wherein the instructions for servicing and repairing the industrial truck are provided by the software on the central service computer, characterized by - updating the instructions on the central service computer from experience with previous repairs, and reports produced by service technicians, wherein feedback is provided by the service technicians in predefined electronic forms, service reports or in any other way and is processed automatically by the software on the central service computer, wherein information relating to a repair time and a possible repair date is made available to the user of the industrial truck via a web application, wherein the service computer selects an associated spare parts directory based on a transmitted or determined serial number of the industrial truck, and wherein, for spare parts corresponding to a determined most probable cause of the fault, the service computer initiates a removal of these spare parts from a spare parts warehouse. wherein information relating to a repair time and a possible repair date is made available to the user of the industrial truck via a web application, wherein the service computer selects an associated spare parts directory based on a transmitted or determined serial number of the industrial truck, and wherein, for spare parts corresponding to a determined most probable cause of the fault, the service computer initiates a removal of these spare parts from a spare parts warehouse.