This comprehensive service and repair manual covers all models of the 1991-1998 Mercedes S-Class W140 & C140, providing you with the exact same information used by technicians at dealerships to maintain, service, diagnose, and repair your vehicle.

With detailed step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications, this manual gives you everything you need to confidently tackle any repair. From basic maintenance to complex engine work, you'll find clear and concise guidance throughout the entire process.

The manual covers a wide range of topics, including:

* **Maintenance:** Learn how to perform routine maintenance tasks such as oil changes, filter replacements, and fluid checks.
* **Engine:** Gain in-depth knowledge of the engine, including its components, operation, and troubleshooting.
* **Control System:** Understand the complex electronic control systems that regulate various aspects of your vehicle's performance.
* **Mechanical:** Explore the mechanical systems of your S-Class, including the transmission, suspension, and brakes.
* **Fuel Service Specifications:** Find detailed information on fuel systems and their proper maintenance.
* **Emission Control:** Learn about the emission control system and how to diagnose and repair any issues.
* **Intake Exhaust Cooling:** Understand the critical role of the intake and exhaust systems in engine performance.
* **Lube:** Discover the proper lubrication procedures and recommended lubricants for your S-Class.
* **Ignition Starting Charging:** Gain a thorough understanding of the ignition, starting, and charging systems.
* **Auto Transmission Clutch:** Explore the workings of the automatic transmission and clutch systems.
* **Manual Transmission:** Learn about the manual transmission system and its components.
* **Transfer Propeller Shaft:** Understand the transfer case and propeller shaft.
* **Drive Shaft:** Get detailed information on the drive shaft system.
* **Differential:** Explore the differential system and its operation.
* **Axle Suspension:** Learn about the suspension system and how it contributes to ride comfort and handling.
* **Tire & Wheel:** Find information on tire and wheel specifications and proper maintenance.
* **Brake Control:** Understand the brake control system and its components.
* **Brake:** Learn about the braking system and its various components.
* **Parking Brake:** Explore the parking brake system and its operation.
* **Steering Column:** Gain knowledge of the steering column and its components.
* **Power Steering:** Understand the power steering system and its maintenance requirements.
* **Air Condition:** Learn about the air conditioning system and its operation.
* **Suppl Restraint System:** Understand the supplementary restraint system, including airbags and seatbelts.
* **Seat Belt:** Learn about the seatbelt system and its components.
* **Engine Immobilizer:** Gain knowledge of the engine immobilizer system and its security features.
* **Cruise Control:** Explore the cruise control system and its operation.
* **Wiper & Washer:** Understand the wiper and washer systems and their maintenance requirements.
* **Door Lock:** Learn about the door lock system and its components.
* **Meter Audio/Visual:** Gain knowledge of the instrument cluster and other audio/visual systems.
* **Horn:** Understand the horn system and its components.
* **Windshield/Glass Mirror:** Learn about the windshield, glass, and mirror systems.
* **Instrument Panel:** Gain knowledge of the instrument panel and its components.
* **Seat:** Explore the seat system and its components.
* **Engine Hood/ Door:** Understand the engine hood and door systems.
* **Exterior & Interior:** Learn about the exterior and interior features of your S-Class.
* **Electrical:** Explore the electrical system, including wiring diagrams and troubleshooting.
* **Multiplex/ Can Communication:** Understand the multiplex and CAN communication systems.

With this comprehensive manual, you can confidently tackle any repair or maintenance task on your 1991-1998 Mercedes S-Class W140 & C140. You'll save money on repairs and gain a deeper understanding of your vehicle's operation.

The 1991-1998 Mercedes-Benz S-Class (W140/C140) represents a pinnacle of automotive engineering and luxury. Introduced in 1991, the W140 generation marked a significant departure from its predecessor, the W126, with a focus on enhanced safety, comfort, and technology. This generation was renowned for its massive size, opulent interior, and a robust selection of powerful engines, including naturally aspirated V8 and V12 options, as well as a groundbreaking twin-turbocharged V8. The W140 S-Class was also the first Mercedes-Benz model to feature electronic stability program (ESP), anti-lock braking system (ABS), and numerous airbags, making it one of the safest cars of its time.

Despite its impressive features, the W140 S-Class was criticized for its exorbitant weight and complex electrical systems, contributing to a reputation for high maintenance costs. Nonetheless, its luxurious appointments, advanced technology, and unwavering performance cemented its position as a symbol of prestige and refinement. The W140's legacy continues to influence automotive design and engineering today, and its enduring appeal is a testament to its remarkable achievements in luxury car manufacturing. Its sophisticated engineering and advanced features, along with its distinctive design, have made the W140 S-Class a highly sought-after classic car, attracting enthusiasts and collectors alike. Owning a W140 is not only a statement of wealth and taste, but also a testament to appreciation for automotive history and engineering.