🏷️ Basic Information Identification Make: Mercedes-Benz Model: S-Class Chassis Code: W126 Product Type: General Service Repair Manual 👋 Introduction Market Position Target Audience: W126 S-Class owners and DIY enthusiasts Competitive Analysis Value Proposition: Cost-saving tool for routine maintenance, avoiding dealership costs Key Features Specification Inclusion: Includes critical specifications and part numbers Maintenance Focus: Prioritizes essential tasks for long-term vehicle health 📋 Manual Details Coverage Areas Primary Coverage: Basic servicing and routine maintenance Page Count Page Count: 55 Manual Type Manual Type: Service Manual Language Language: English Format Format: Print 📖 Manual Coverage Systems Covered Engine Maintenance: Oil changes, filter replacements, spark plug service, belt checks, fluid level checks Brakes Maintenance: Brake fluid checks, pad wear inspection, rotor inspection Cooling System Maintenance: Coolant level checks, hose inspection, radiator cap inspection Suspension Maintenance: Visual inspection of shocks, struts, bushings, and linkages Electrical Maintenance: Battery terminal cleaning, basic fuse checks Procedures Included Routine Service: Scheduled maintenance tasks for optimal vehicle performance Fluid Replacements: Guidelines for replacing essential vehicle fluids Filter Changes: Instructions for replacing air, oil, and fuel filters Technical Depth Depth Level: Basic to Intermediate Diagnostic Focus: Routine checks and identification of common wear items 📊 Manual Specifications File Format Binding Type: Perfect Bound Print Quality Paper Type: High-quality, durable paper stock Print Resolution: Clear, legible text and diagrams ⚙️ Engine Specifications Primary Engine Engine Options Covered: Likely covers common W126 gasoline engines (e.g., M110, M116, M117) Performance Power Output Range: Varies by specific engine, typically 150-280 horsepower Fuel System Fuel Delivery Types: Fuel Injection (Bosch K-Jetronic, KE-Jetronic) Fluid Specifications Engine Oil Type: Specifications for recommended engine oil viscosity and API service category Maintenance Spark Plug Recommendations: Part numbers and gap specifications for ignition system maintenance 🔧 Transmission Standard Transmission Type Standard: 4-speed automatic (e.g., 722.3) was common Optional Transmission Type Optional: 5-speed manual was available on some early models and specific engines Features Automatic Transmission Features: Torque converter, hydraulic control, lock-up clutch (on later models) Fluid Specifications Transmission Fluid Type: Specifications for automatic transmission fluid (e.g., ATF Dexron II/III) 📐 Dimensions Exterior Wheelbase Range: Standard (SWB) and Long Wheelbase (LWB) versions available Weights Curb Weight Range: Approximately 3,500 - 4,000 lbs depending on configuration 🛡️ Safety Features Ratings Safety Standards: Reflects safety standards of its era, with a robust chassis design Active Features Braking System: Four-wheel disc brakes, often with ABS (Anti-lock Braking System) on later models Passive Features Airbags: Driver airbag became standard during the W126's production run Seatbelts: Front and rear seatbelts, often with pre-tensioners on front seats 💡 Technology Features Infotainment Audio System: Original factory radio, often with cassette player; potential for upgraded units Driver Assistance ABS Availability: Anti-lock Braking System (ABS) available on later models and higher trims Comfort Features Climate Control: Automatic climate control (THERMATIC/THERMOTRONIC) was a hallmark of the W126 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-7,500 miles or annually (refer to manual for specific years/engines) Transmission Fluid Change: Recommended at intervals such as 30,000-50,000 miles or as per manufacturer's schedule Brake Fluid Change: Recommended every 2 years to prevent moisture absorption Fluid Specifications Coolant Type: Glycol-based coolant, typically requiring a specific Mercedes-Benz approved formula Power Steering Fluid: Hydraulic fluid, specifications found in the manual Known Issues Common Wear Items: Hose degradation (rubber and plastic), climate control system (e.g., blower motor, vacuum actuators), suspension bushings, fuel distributor issues (on K-Jetronic) Electrical Quirks: Wiring harness issues, vacuum line leaks affecting various systems Body Corrosion: Common on older vehicles, particularly in areas prone to moisture Part Numbers Oil Filter Example: Example: Mann-Filter W917/1, Mahle OX 34D (cross-referenced for specific engine) Air Filter Example: Example: Mann-Filter C32111 (cross-referenced for specific engine) 📚 Vehicle History Brand Heritage Mercedes Benz Legacy: Part of Mercedes-Benz's long-standing reputation for luxury, engineering, and durability Model Evolution W126 Introduction: Replaced the W116 S-Class, introduced in 1979 W126 Facelift: Significant facelift in 1985, with updated styling and powertrain options Production Production Years: 1979-1991 Production Volume: Over 800,000 units produced globally 🏆 Awards & Recognition Recognitions Industry Acclaim: Consistently ranked as one of the finest sedans of its era, recognized for build quality and ride comfort