🏷️ Basic Information Identification Make: Mercedes-Benz Model: S-Class Model Code: W126 Product Name: Mercedes W126 Owners Guide Generation Generation Designation: Second Generation S-Class Codes Chassis Code: W126 Body Styles: Sedan (W126), Long-Wheelbase Sedan (V126) 👋 Introduction Market Position Market Position: Flagship luxury sedan, positioned as one of the best vehicles in the world during its era. Competitive Analysis Competitors: BMW 7 Series (E23), Audi V8, Jaguar XJ (XJ40), Cadillac Brougham, Rolls-Royce Silver Spirit Key Features Key Features Vehicle: Exceptional build quality, sophisticated engineering, comfortable ride, advanced safety features for its time, powerful yet refined engines. Manual Value Proposition: Empowers owners to understand and proactively manage their W126, reducing potential issues and enhancing longevity. 📋 Manual Details Coverage Areas Primary Focus: Owner's guide, preventative maintenance, common issues, troubleshooting Page Count Page Count: 75 Manual Type Manual Type: Owner's Guide / Owner's Manual Language Language: English Format Format: Print (assumed based on description) 📖 Manual Coverage Systems Covered Systems Covered Overview: General operation, controls, maintenance, common problems, preventative care Engine Operation: Basic engine functions, dashboard indicators, fuel economy tips Electrical System: Lighting, wipers, climate control, power accessories (windows, seats, mirrors) Comfort Features: Climate control operation, seat adjustments, interior lighting Safety Features: Seat belt operation, basic safety system explanations Procedures Included Maintenance Procedures: Routine checks (fluids, tires), basic care, fluid level checks Troubleshooting Guidance: Guidance on identifying and addressing common W126 issues Preventative Maintenance: Recommendations for proactive care to avoid problems Technical Depth Technical Depth: Focus on owner-level understanding and preventative measures, not in-depth repair procedures Diagnostic Level: Basic troubleshooting, identifying common symptoms 📊 Manual Specifications File Format File Format: Print (assumed) Print Quality Print Quality: Standard owner's manual quality (assumed) Binding Type Binding Type: Stapled or perfect bound (typical for owner's manuals) Paper Type Paper Type: Matte or semi-gloss coated paper (typical) ⚙️ Engine Specifications Primary Engine Engine Options Overview: Inline-6 and V8 gasoline engines Engine Options Common Engines: 2.6L M103 (160 hp), 3.0L M103 (180 hp), 3.8L M116 V8 (155 hp), 4.2L M116 V8 (204 hp), 5.0L M117 V8 (230 hp), 5.6L M117 V8 (260 hp) Performance Performance Characteristics: Emphasis on smooth power delivery and refinement rather than outright sportiness. Fuel System Fuel Injection: Bosch K-Jetronic or KE-Jetronic mechanical/electronic fuel injection (depending on year and engine) Fuel Type Recommended Fuel: Unleaded gasoline (octane rating varies by engine, typically 91 or higher) 🔧 Transmission Standard Standard Transmission: 4-speed automatic (722.3/722.4 series) Optional Optional Transmission: 5-speed manual (rare, primarily on earlier 2.6L models) Features Automatic Transmission Features: Torque converter lock-up, selective shifting modes (e.g., Economy/Sport on some models) 📐 Dimensions Exterior Wheelbase Standard: 116.1 inches (2950 mm) Wheelbase Long: 121.3 inches (3080 mm) for V126 Overall Length Standard: 197.4 inches (5015 mm) Overall Length Long: 202.6 inches (5145 mm) for V126 Weights Curb Weight: Approximately 3,700 - 4,300 lbs (1680 - 1950 kg) depending on engine and equipment 🛡️ Safety Features Ratings Safety Ratings Era: No standardized crash test ratings like modern NCAP, but renowned for robust construction and safety features. Active Features Active Safety Features: Four-wheel Anti-lock Braking System (ABS), precise steering system. Passive Features Passive Safety Features: Reinforced passenger cell, crumple zones, dual front airbags (introduced later in production), seat belt pre-tensioners. 💡 Technology Features Infotainment Infotainment System: Analog radio, cassette player, optional CD changer (later models). Driver Assistance Driver Assistance Features: Cruise control, power steering, ABS. Connectivity Connectivity Options: None by modern standards; primarily focused on vehicle systems and comfort. Climate Control Climate Control System: Advanced (for its time) automatic climate control with R134a refrigerant compatibility (later models may have been converted). 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500 to 10,000 miles (12,000 to 16,000 km) or annually, depending on driving conditions and oil type. Major Service Interval: Recommended every 30,000 miles (48,000 km) for comprehensive checks and fluid replacements. Fluid Specifications Engine Oil Type: API SG or higher, SAE 10W-30 or 10W-40 recommended for most climates. Consult manual for specific engine variants. Engine Oil Capacity: Varies by engine, typically 6.5 - 8.5 liters (6.9 - 9.0 US quarts) Coolant Type: MB 325.0 or 326.0 spec (ethylene glycol based, typically a 50/50 mix with distilled water). Transmission Fluid Type: MB 236.6 or 236.7 spec (Dexron II or III compatible) Brake Fluid Type: DOT 4 Known Issues Common W126 Issues: Hydropneumatic suspension leaks (self-leveling rear), fuel distributor issues (K-Jetronic), wiring harness degradation (especially insulation), evaporator core leaks (climate control), climate control vacuum leaks, transmission 'limp mode'. Maintenance Focus Areas: Regular fluid changes, checking for vacuum leaks, inspecting suspension components, monitoring climate control operation. 📚 Vehicle History Brand Heritage Brand Heritage Mercedes: Mercedes-Benz has a long-standing reputation for engineering excellence, luxury, and durability since the early 20th century. Model Evolution Model Evolution W126: Succeeded the W116 S-Class and was produced from 1979 to 1991. It was a significant evolution...