The 2009 Mercury Milan is a vehicle designed to offer a balance of comfort and practicality, representing a significant model within the Mercury lineup. Manufactured by Ford Motor Company in Flat Rock, Michigan, the Milan was positioned as a mid-range offering, building on Ford's engineering foundation. This particular model year saw updates and refinements, reflecting Mercury's commitment to providing reliable and accessible transportation. Its engineering quality and reliability are key aspects, aiming to meet the needs of everyday drivers and families. This workshop service manual provides comprehensive guidance for the repair and overhaul of the 2009 Mercury Milan. It is intended for mechanical technicians and informed owners seeking to maintain or repair their vehicle. The manual covers a wide array of systems, including the engine, transmission, fuel, ignition, lubrication, exhaust, electrical, and body. It details routine maintenance, troubleshooting procedures, component removal and installation, and assembly/disassembly processes, including engine overhaul and the integration of proprietary components. Special attention is given to safety precautions, the use of special tools, and diagnostic information, ensuring accurate and safe servicing.