In current century, success of organizations is dependent on the correct management of knowledge and also knowledge management (KM) successful implementation relies on its critical success factors (CSFs). Identifying these critical factors can help businesses in planning and implementing knowledge management. Hence, this study aims to propose a conceptual model with the CSFs approach in order to identify and prioritize these factors in automobile industry in Iran and to reduce the probability of knowledge management system implementation failure. After reviewing the research literature and integration and summarization of the factors, 26 indicators were found and categorized in 5 groups. After the endorsement of experts, questionnaires were broadcasted among the population of statistical society in Bahman Automobile Industry. Data analysis showed that all the factors of the model were verified. In the next step, Friedman test results show that the ratings are as follows: 1.organizational culture, 2. Organizational factors, 3. Information technology, 4. Goals and strategies, 5. human resource management.