This comprehensive service and repair manual covers all models of the Mercedes-Benz Model 126, including the 300SD, 300 SDL, 300 SE, 300 SEL, 350 SD, 350 SDL, 380 SE, 380 SEL, 380 SEC, 420 SEL, 500 SEL, 500 SEC, 560 SEL, and 560 SEC, for model years 1981 through 1991. It provides detailed information on every aspect of these vehicles, from basic maintenance to complex repairs. The manual includes step-by-step instructions, detailed illustrations, and diagrams, making it easy to understand and follow even for the novice mechanic.

Detailed sub-steps expand on repair procedure information, with notes, cautions and warnings throughout each chapter pinpointing critical information. Numbered instructions guide you through every repair procedure step by step, with bold figure numbers helping you quickly match illustrations with instructions. The manual features detailed illustrations, drawings and photos to guide you through every procedure, with enlarged insets that help you identify and examine parts in detail.

A numbered table of contents helps you find the information you need quickly, and the manual makes it easy to diagnose and repair problems with your vehicle's electrical system. Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use. This manual is the same type of service manual your local dealer will use when doing a repair.

The Mercedes-Benz Model 126, produced from 1979 to 1991, represents a pivotal moment in the evolution of the German automaker's luxury sedan lineup. This generation of S-Class, encompassing the 300SD, 300 SDL, 300 SE, 300 SEL, 350 SD, 350 SDL, 380 SE, 380 SEL, 380 SEC, 420 SEL, 500 SEL, 500 SEC, 560 SEL, and 560 SEC models, was a significant departure from its predecessor, the W116. The W126 introduced a host of groundbreaking features that set a new standard for luxury and engineering excellence. These innovations included a meticulously designed aerodynamic body, a sophisticated suspension system with independent struts and anti-dive geometry, and an advanced powertrain lineup boasting diesel and gasoline engines. The interior showcased a luxurious blend of comfort and functionality, with supple leather upholstery, electronically adjustable seats, and a comprehensive array of amenities. The W126 also incorporated numerous safety features, including crumple zones, anti-lock brakes (ABS), and airbags, further cementing its reputation as a technological tour de force.

Beyond its technological advancements, the W126 was admired for its timeless elegance and enduring design. The vehicle's sharp lines, distinguished grille, and refined proportions exuded an air of sophistication that resonated with discerning drivers worldwide. The W126's impact extended beyond its initial production run, as its iconic design elements and engineering principles have continued to influence subsequent S-Class generations. The W126 remains a highly sought-after classic, valued for its blend of luxury, performance, and durability. Its reputation as a reliable and well-engineered car is echoed in the availability of comprehensive service and repair manuals, such as the one mentioned, which provides detailed information for maintaining and restoring these exceptional vehicles.