🏷️ Basic Information Identification Make: Mercedes-Benz Model: 450 SE Chassis Code: W116 Model Years Covered: 1973-1976 👋 Introduction Market Position Target Audience: Mercedes-Benz W116 450 SE owners, independent repair shops, automotive enthusiasts Competitive Analysis Value Proposition: Provides professional-level repair and maintenance information equivalent to dealership manuals, enabling significant cost savings on repairs. Key Features Content Quality: Original manufacturer content, hundreds of pages of detailed diagrams and information, complete and intact. Usability: Easy to follow directions, numbered instructions, detailed illustrations, searchable content (inherent in PDF). 📋 Manual Details Coverage Areas Primary Coverage: Complete Service, Repair, Maintenance, and Troubleshooting Model Variants Covered: All Models, Engines, Trim Levels, and Transmission Types within W116 450 SE Page Count Estimated Page Count: Hundreds of pages (specific count not provided, but described as 'complete' and 'comprehensive') Manual Type Type: Workshop Repair Service Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Engine Service/Repair, Engine Control System Transmission: Transmission Service/Repair, Differential/Drive, Axle Brakes: Brake System Electrical: Electrical System, Wiring Diagram Suspension Steering: Suspension, Steering Cooling Fuel: Cooling System, Fuel Injection/Fuel System Emission HVAC: Emission System, Heater/Air Conditioner Body Interior: Chassis/Body, Interior, Restraint System Procedures Included Maintenance: General Maintenance, Periodic Lubrication Repair: Detailed step-by-step repair procedures, Disassembly, Assembly, Cleaning, Reinstalling procedures Troubleshooting: Troubleshooting, Diagnostic procedures Technical Depth Depth: Comprehensive, Professional Technician Level, including detailed diagrams and specific repair information 📊 Manual Specifications File Format Printability: Full Printable Zoom Functionality: Zoom IN/OUT enabled Delivery Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader, WinZip Compatibility Operating Systems: All Versions of Windows & Mac Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: V8 SOHC Displacement: 4.5 Liters (4520 cc) Fuel System: Bosch K-Jetronic Fuel Injection Performance Horsepower: Approximately 190-220 hp (depending on specific market and emissions regulations) Torque: Approximately 238-260 lb-ft (depending on specific market and emissions regulations) Maintenance Spark Plugs: Specific part numbers available within manual (e.g., Bosch W8 AC or equivalent) Engine Oil Type: Refer to manual for specific API service classification and viscosity (e.g., SAE 10W-40 or 20W-50 depending on climate) Engine Oil Capacity: Approximately 8.0 Liters (8.5 US quarts) with filter change 🔧 Transmission Standard Transmission Type: 3-speed or 4-speed Automatic Transmission (e.g., Mercedes-Benz 3HP20 or 4HP22) Optional Transmission Type: Manual transmission availability may vary by market, typically less common for 450 SE Features Transmission Fluid Type: Refer to manual for specific Mercedes-Benz specification (e.g., Dexron II or equivalent) Transmission Fluid Capacity: Approximately 10-12 Liters (10.5-12.7 US quarts) for complete refill 📐 Dimensions Exterior Wheelbase: 2935 mm (115.6 inches) Length: 4995 mm (196.7 inches) Width: 1875 mm (73.8 inches) Height: 1440 mm (56.7 inches) Weights Curb Weight: Approximately 1700-1800 kg (3748-3968 lbs) 🛡️ Safety Features Ratings Crash Safety: Designed to stringent Mercedes-Benz safety standards of the era, with a focus on crumple zones and structural integrity. Active Features Braking System: Four-wheel disc brakes, often with power assistance and ABS becoming available later in the W116 run. Passive Features Restraint System: Seat belts (front and rear), potentially optional airbags later in the production run (though rare for early models). 💡 Technology Features Infotainment Audio System: Typically an analog AM/FM radio with cassette player, potentially aftermarket upgrades. Driver Assistance ABS: Anti-lock Braking System was an optional feature that became more prevalent towards the end of the W116's production life. Comfort Features Climate Control: Power windows, power locks, power steering, power seats, automatic climate control (optional or standard depending on trim). 🔧 Maintenance Service Intervals Oil Change: Typically every 7,500-10,000 miles or 12-18 months, refer to manual for exact schedule. Transmission Fluid Service: Every 30,000-50,000 miles or as specified in the manual. Tune Up Items: Spark plugs, ignition wires, air filter, fuel filter replacement as per manual schedule. Fluid Specifications Coolant Type: Ethylene glycol-based antifreeze mixed with distilled water (e.g., Mercedes-Benz specification 325.0) Brake Fluid Type: DOT 3 or DOT 4 brake fluid Known Issues Common Failures: Fuel system (injection, pumps, lines), ignition system components, vacuum leaks, rust/corrosion (especially in certain climates), aging rubber and plastic components. 📚 Vehicle History Brand Heritage Mercedes Benz Legacy: Continuation of Mercedes-Benz's reputation for engineering excellence, luxury, and durability. Model Evolution W116 Significance: First generation of the S-Class sedan, setting new standards for automotive safety, comfort, and technology in its era. Production Production Period: 1972-1980 (W116 generation), with 450 SE models within 1973-1976 covered by this manual. 🏆 Awards & Recognition Recognitions Historical Significance: The W116 platform is widely recognized as a pioneering vehicle in automotive safety and luxury, influencing future S-Class generations and the broader automotive industry.