🏷️ Basic Information Identification Make: Mercedes-Benz Model: 380 SEC Chassis Code: C107 Model Years Covered: 1982-1983 Codes Engine Code: M116 (3.8L V8) 👋 Introduction Market Position Vehicle Segment: Luxury Grand Tourer / Personal Luxury Coupe Target Audience: Affluent buyers seeking refined styling, comfortable cruising, and Mercedes-Benz engineering. Competitive Analysis Key Competitors: BMW 6 Series (E24), Jaguar XJ-S, Cadillac Eldorado, Rolls-Royce Corniche. Key Features Design Philosophy: Elegant, pillarless coupe design emphasizing aerodynamic lines and premium comfort. Engineering Focus: Robust mechanicals, advanced (for its time) fuel injection, and sophisticated chassis dynamics. Manual Value Proposition Benefit To Owner: Empowers owners and technicians with detailed knowledge to maintain and repair the vehicle effectively, preserving its value and performance. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Maintenance, Troubleshooting, Diagnostics Page Count Estimated Page Count: Varies by specific year manual, generally extensive for comprehensive coverage. Manual Type Type: Factory-Style Service Repair Manual Language Language: English Format Format: PDF / WINRAR (Digital Download) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, cylinder head, crankshaft, pistons, connecting rods, camshafts, timing system, lubrication system, cooling system, fuel system (including injection). Engine Electrical: Ignition system, starting system, charging system, fuel injection control unit (ECU), sensors, warning lamps. Transmission: Manual and Automatic Transmission overhaul, fluid changes, diagnostics, clutches. Drivetrain: Driveshaft, universal joints, flexible couplings, rear axle, front axle (if applicable for specific sub-models, though SEC is typically RWD). Suspension Steering: Front and rear suspension components, shock absorbers, springs, control arms, ball joints, steering system, power steering, level control systems (e.g., ADS). Brakes: Brake system hydraulics, brake pads, brake discs, brake lines, parking brake, ABS (if equipped). Body Chassis: Body structure inspection, water leakage, corrosion, door hinges, locks, hood, sunroof, convertible top mechanisms (for SEC, it's a pillarless hardtop), exterior panels, noise encapsulation. HVAC: Heating and ventilation system, air conditioning system, refrigerant charge, filters (dust, charcoal, recirculating air). Electrical Body: Lighting (headlamps, exterior lamps), windshield wipers and washers, antennas, battery, warning and indicator lamps. Procedures Included Maintenance: Oil and filter changes, fluid level checks and corrections, filter replacements, belt inspections and adjustments, spark plug replacement, fuel filter replacement, valve clearance adjustments. Troubleshooting: Diagnosis of vehicle problems, inspection of components, lines, and hoses, identifying causes of issues. Repair Rebuild: Disassembly, inspection of parts for reuse, rebuilding of components (e.g., engine, transmission, suspension), assembly procedures. Adjustment: Idle speed adjustment, injection timing adjustment, valve clearance adjustment, parking brake adjustment, steering bolt tightening, rear axle mount limiting stop adjustment. Lubrication: Throttle linkage lubrication, door hinge lubrication, door lock lubrication, sunroof rail lubrication, folding side mirror lubrication. Technical Depth Depth: Comprehensive, covering routine maintenance, in-depth diagnostics, component overhaul, and troubleshooting. 📊 Manual Specifications File Format Digital Format: PDF and WINRAR archive. PDF is typically searchable and printable. Print Quality Quality Description: High-resolution digital scans or professionally formatted documents, ensuring clear diagrams and text. Binding Type Binding Type: Not applicable (Digital format) Paper Type Paper Type: Not applicable (Digital format) ⚙️ Engine Specifications Primary Engine Engine Type: V8, SOHC (Single Overhead Camshaft) Displacement: 3.8 liters (3839 cc) Bore X Stroke: 86.0 mm x 80.25 mm Performance Horsepower Est: Approximately 155-160 hp @ 4750 rpm (US Spec) Torque Est: Approximately 196-200 lb-ft @ 2500 rpm (US Spec) Fuel System Fuel Delivery: Bosch K-Jetronic (CIS - Continuous Injection System) Fuel Type: Unleaded gasoline (premium recommended) Lubrication Oil Capacity Qt: Approximately 8.5 quarts (with filter) Cooling Coolant Capacity Qt: Approximately 10.5 quarts 🔧 Transmission Standard Transmission Type: 4-speed Automatic (e.g., 4G-TRONIC) Optional Transmission Type: Not typically offered with manual transmission for SEC models of this era. Features Fluid Type: MB Automatic Transmission Fluid (ATF) - e.g., MB 236.1 spec Fluid Capacity Qt Auto: Approximately 8.0-8.5 quarts (pan removal) 📐 Dimensions Exterior Length In: Approx. 193.3 inches Width In: Approx. 70.7 inches Height In: Approx. 53.7 inches Wheelbase In: Approx. 115.6 inches Weights Curb Weight Lbs: Approx. 3700-3800 lbs 🛡️ Safety Features Ratings Crash Test Info: Data from this era is limited compared to modern standards. Focus on structural integrity and passive safety features of the time. Active Features Braking System: Four-wheel disc brakes, often with ABS (Anti-lock Braking System) as an option or standard depending on market. Passive Features Seat Belts: Front seat belts with pretensioners (likely standard), rear seat belts. Body Construction: Reinforced passenger cell, energy-absorbing crumple zones. 💡 Technology Features Infotainment Audio System: Factory installed AM/FM stereo with cassette player. Often featured premium sound options. Climate Control: Automatic Climate Control (ACC) or manual HVAC systems with advanced ventilation. Driver Assistance ABS: Anti-lock Braking System (ABS) was a significant technological feature for its time, often optional. Level Control: Hydropneumatic self-leveling suspension (ADS - Automatic Damping System) available on some models for enhanced ride comfort and handling. 🔧 Maintenance Service Intervals Oil Change Interval Miles: Approximately every 5,000 - 7,500 miles, or annually. Transmission Fluid...