The Lancia Thesis is a large family sedan that represented Lancia's entry into the premium segment, produced from 2002 to 2010. This flagship model was designed with a focus on elegant Italian styling, luxurious interior appointments, and a refined, comfortable driving experience, aiming to compete with established European luxury brands. Available with V6 petrol engines and common rail turbodiesel (JTD) options, the Thesis offered a distinctive alternative in the market, characterized by high-quality materials and advanced comfort features. Its substantial dimensions, including a length of approximately 4,880 mm and a wheelbase of 2,830 mm, contributed to a spacious interior and a comfortable ride, further enhanced by a 4-star Euro NCAP safety rating.

This comprehensive workshop service repair manual provides detailed technical information and procedures for the Lancia Thesis models from 2002 through 2010. It covers all major vehicle systems, including the powertrain (engine variants, transmissions, fuel, cooling, and exhaust systems), chassis (suspension, steering, brakes, wheels), electrical systems (12V system, ignition, lighting, instrumentation, control modules), and body (construction, interior and exterior trim, HVAC). The manual details essential maintenance schedules, fluid specifications, repair procedures, and diagnostic troubleshooting guides, supported by hundreds of photos and illustrations. This factory-level resource is designed to assist owners, mechanics, and technicians in performing routine maintenance, complex repairs, and accurate diagnostics to ensure the optimal performance and longevity of the Lancia Thesis.