The S40 and V40, produced from 1995 to 2004, represent an entry into the compact executive segment, offering a blend of Scandinavian design, robust build quality, and renowned safety. These vehicles, built on the 40-series platform, were positioned as premium alternatives with distinctive interiors and a strong emphasis on passenger protection, including advanced safety cage construction and airbag systems. Available as a sedan (S40) or wagon (V40), they offered a range of gasoline and diesel engines, from 1.8L to 2.0L, with power outputs ranging from 90 hp to 165 hp, and some variants featured all-wheel drive. This comprehensive service manual provides detailed information for the maintenance, repair, and diagnostics of the S40 and V40. It covers all major mechanical and electrical systems, including detailed engine and powertrain procedures, chassis and suspension work, brake system servicing, and extensive electrical troubleshooting with wiring diagrams. The manual includes step-by-step instructions for scheduled maintenance, component replacement, and in-depth diagnostics, catering to both professional technicians and dedicated owners aiming to preserve the integrity and performance of their vehicle.