The service system for managing the life cycle of locomotives faces the problem of obtaining objective information about the technical condition of the locomotive and its operation. Designers of equipment and the locomotive as a whole, locomotive-building plants, service companies, locomotive repair plants and the operating organization have their own information systems that are not connected to each other. It is proposed to create a cross-platform management system for the locomotive life cycle database with the collection of information from all information systems at all stages of the locomotive life cycle with the appropriate management organization, which is described in the article. Information about the structure of the locomotive equipment, possible suppliers and maintenance regulations (MRO) is formed at the design stage. Information on the numbers and suppliers of installed equipment and test results is generated at the stage of locomotive manufacturing. In operation, the mileage of the locomotive, the ton-kilometer work, and, if possible, the electricity consumption are recorded. The MRO system registers the types and volumes of work, their duration and cost, and the spare parts and materials used. Equipment replacement is also registered. Separately, the reasons for failures and super-cycle work are analyzed. As a result, the database is formed for multi-factor analysis of the reasons for the low reliability of locomotives, the high cost of the life cycle. Corrective measures are being developed.