This comprehensive Mercedes-benz W123 280E 1978 Workshop Service Repair Manual is your ultimate resource for maintaining and repairing your vehicle. It contains detailed instructions and illustrations covering all aspects of the vehicle, from basic maintenance to complex repairs. The manual is designed for both experienced mechanics and DIY enthusiasts, providing step-by-step guidance for every procedure. The manual includes detailed substeps to expand upon repair procedure information, notes, cautions and warnings to highlight critical information, and numbered instructions for each step. Bold figure numbers help you quickly match illustrations with instructions, and detailed illustrations, drawings and photos guide you through every procedure. Enlarged insets help you identify and examine parts in detail, and the numbered table of contents makes finding the information you need quick and easy. This manual also features troubleshooting and electrical service procedures combined with detailed wiring diagrams for easy diagnosis and repair of your vehicle's electrical system.

The Mercedes-Benz W123 280E, produced from 1976 to 1985, represents a pinnacle of engineering excellence and enduring quality that solidified the brand's reputation for luxury and reliability. This mid-size sedan, internally codenamed W123, was a substantial departure from its predecessor, the W114/115 series, boasting a more angular, boxy design that became synonymous with the era's automotive aesthetic. The 280E variant, powered by a 2.8 liter, fuel-injected, inline-six engine producing 185 horsepower, offered a harmonious blend of performance and efficiency. Its smooth and responsive power delivery, combined with a robust chassis and advanced suspension, ensured a comfortable and confident driving experience. The W123's interior, characterized by its driver-focused layout and high-quality materials, emphasized practicality and durability, making it a suitable choice for both daily commutes and long-distance journeys. Beyond its mechanical merits, the W123 280E embodied a spirit of innovation. It pioneered features such as an optional automatic climate control system, a comprehensive onboard computer with self-diagnosis capabilities, and advanced safety features like crumple zones and a robust occupant protection system. These innovations, coupled with its robust construction and meticulous build quality, solidified the W123's reputation for enduring reliability. This, coupled with its timeless design and enduring desirability, propelled it to become one of the most successful Mercedes-Benz models ever produced, with over 2.7 million units sold globally. Today, the W123 remains a highly sought-after classic car, appreciated for its blend of luxury, practicality, and timeless appeal. Its enduring popularity serves as a testament to Mercedes-Benz's commitment to engineering excellence and its lasting impact on the automotive landscape.