This comprehensive new textbook covers theory and service for all mechanical and electrical systems and components of the modern automobile, in easy to understand terms. It is designed to serve as a single foundational text for all technical areas, covering the need to know information for becoming a qualified, professional technician. Organization and content are based on ASE - certification tasks, following the eight ASE systems in a logical but flexible chapter arrangement that constantly revisits professionalism and certification. Special care has been taken to focus on the learning process with the inclusion of step by step procedures captured in unique photographic sequences that encourage better understanding of the subject. Retention, diagnostics, customer relations and safety are all emphasized throughout. This book should be of interest to students of automotive technology.