This comprehensive service and repair manual is specifically designed for the 1991 Mercedes W126 SEL, covering all models and repairs from A to Z. It provides the same detailed information used by technicians at authorized Mercedes dealerships, allowing you to maintain, service, diagnose, and repair your vehicle with confidence. The manual includes step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications for every aspect of your vehicle. From routine maintenance to complex repairs, you'll find everything you need to handle any task. The manual covers a wide range of systems, including: * **Engine:** Detailed information on engine operation, maintenance, and repair, including fuel systems, emissions control, cooling, lubrication, ignition, and starting. * **Transmission:** Comprehensive instructions for both automatic and manual transmission systems, covering clutch, gearboxes, drive shafts, differentials, and axles. * **Suspension and Steering:** In-depth guidance on suspension components, steering systems, including power steering, and wheel and tire specifications. * **Brakes:** Complete coverage of braking systems, including disc and drum brakes, parking brake, and brake control systems. * **Electrical System:** Detailed information on the electrical system, including wiring diagrams, multiplex communication systems, and components such as lights, wipers, air conditioning, and more. * **Body and Interior:** Instructions for repairing and maintaining the bodywork, interior components, seats, doors, windows, and more. * **Safety Systems:** Thorough information on safety systems, including seat belts, airbags, and immobilizers. With this manual, you'll have everything you need to understand and work on your 1991 Mercedes W126 SEL. You can print any page or diagram for easy reference in your garage or workshop.

The 1991 Mercedes-Benz W126 SEL, a true icon of automotive luxury, represents the pinnacle of German engineering and craftsmanship from its era. This full-size sedan, known for its timeless elegance and unparalleled comfort, embodies the brand's reputation for meticulous attention to detail. The W126's sleek lines, characterized by a long hood, wide grille, and flowing roofline, remain a testament to classic design principles. Underneath its opulent exterior lies a robust chassis and powerful engine options, ensuring both a smooth ride and exhilarating performance. Whether powered by a fuel-efficient 3.0L inline-six or a throaty 5.0L V8 engine, the SEL delivers a driving experience that is both refined and engaging. The 1991 W126 SEL's interior exudes an aura of opulence and refinement. Premium leather upholstery, wood trim, and an abundance of sound-deadening materials provide an immersive sanctuary for its occupants. Its spacious cabin offers ample legroom and headroom for both front and rear passengers, while its meticulously designed dashboard features an array of advanced technology and features for the time, including an optional sunroof and climate control. The W126 SEL's features combined with its robust build quality and enduring design have solidified its reputation as a highly desirable classic car, sought after by collectors and enthusiasts alike. The 1991 Mercedes-Benz W126 SEL represents an era when automotive luxury was synonymous with engineering excellence and timeless design, making it a true testament to the brand's unwavering commitment to quality and craftsmanship.