This comprehensive 1980 Mercedes W126 SEC Service and Repair Manual provides detailed instructions, diagrams, and specifications to help you maintain, service, diagnose, and repair your vehicle. It covers all models and all repairs from A to Z.

This manual is not generic repair information; it is vehicle-specific. It contains the same information used by technicians at Mercedes-Benz dealerships, ensuring accurate and reliable repair guidance.

The manual includes step-by-step instructions and illustrations for every repair, along with wiring schematics, diagrams, and specifications. This allows you to tackle any repair with confidence.

You'll find comprehensive coverage of all aspects of your vehicle, including:

* **Maintenance:** Regular maintenance schedules, fluid checks, and filter replacements.
* **Engine:** Engine performance, diagnostics, and repair procedures for all components, including the fuel system, intake and exhaust, cooling system, lubrication system, ignition and starting, and charging system.
* **Transmission:** Information on automatic and manual transmissions, clutch systems, transfer cases, drive shafts, differentials, and axles.
* **Suspension and Steering:** Detailed coverage of suspension components, steering systems, and wheel alignment.
* **Brakes:** In-depth information on brake systems, including disc brakes, drum brakes, and parking brakes.
* **Electrical System:** Comprehensive coverage of electrical components, wiring diagrams, and troubleshooting procedures.
* **Climate Control:** Information on air conditioning and heating systems, including diagnostics and repair procedures.
* **Body and Interior:** Instructions for repairing body panels, doors, windows, seats, and other interior components.
* **Safety Systems:** Detailed information on safety features, including seat belts, airbags, and engine immobilizers.
* **And much more...**

This manual is your complete guide to keeping your 1980 Mercedes W126 SEC in top condition.

The 1980 Mercedes-Benz W126 SEC, an iconic symbol of luxury and performance, marked a significant evolution in the brand's history. It was the first generation of the S-Class Coupe, a two-door version of the W126 S-Class sedan, and was produced from 1980 to 1989. The SEC stood for "Sport-Coupé," highlighting its sporty nature, which was showcased through its sleek, aerodynamic design and powerful engine options. The W126 SEC was renowned for its exceptional build quality, robust engineering, and impressive performance, offering a perfect blend of luxury and driving pleasure. It featured a spacious and opulent interior, draped in high-quality leather and wood trim, boasting a range of advanced comfort features, including automatic climate control, power windows and seats, and a luxurious sound system.

Under the hood, the 1980 W126 SEC offered a selection of powerful V8 engines, including the 3.8-liter M117 engine producing 227 horsepower and the 5.0-liter M117 engine generating 255 horsepower. These engines were paired with a smooth-shifting four-speed automatic transmission, delivering a comfortable and exhilarating driving experience. The W126 SEC also featured a sophisticated suspension system, providing a stable and comfortable ride, while its powerful braking system ensured confident stopping power. The Mercedes-Benz W126 SEC, with its blend of luxury, performance, and timeless design, became a benchmark in the luxury coupe segment. It captured the hearts of car enthusiasts worldwide, solidifying its position as a coveted classic and a testament to Mercedes-Benz's engineering excellence.