🏷️ Basic Information Identification Make: Mercedes-Benz Model: 380SEC Chassis Code: W126 Model Years Covered: 1982-1983 👋 Introduction Market Position Vehicle Class: Luxury Grand Tourer Coupe Target Audience: Owners seeking detailed maintenance and repair information for their classic Mercedes-Benz Competitive Analysis Competitors Era: BMW 6 Series, Jaguar XJ-S, Porsche 928 Key Features Vehicle Design: Iconic pillarless coupe design by Bruno Sacco, excellent aerodynamics Manual Value Proposition: Provides comprehensive factory-level repair and maintenance knowledge for DIY or professional use. 📋 Manual Details Coverage Areas Manual Type: Factory Service Repair Workshop Manual Language: English Format: PDF Availability: Instant Download Licensing: Lifetime Use, No Expiry Device Compatibility: Windows & MAC Computers, Tablets, Smartphones 📖 Manual Coverage Systems Covered Engine: All aspects of the M116 V8 engine (3.8L) Fuel System: Bosch K-Jetronic fuel injection, fuel pump, lines, injectors Ignition System: Electronic ignition, distributors, spark plugs, coils Transmission: 4-speed automatic transmission (722.3) Drivetrain: Rear-wheel drive, driveshaft, differential Suspension: Front independent suspension (struts, control arms), rear independent suspension (semi-trailing arms), springs, shocks, sway bars Brakes: Front and rear disc brakes, ABS (Anti-lock Braking System) components, hydraulic system Steering: Power steering system, steering gearbox, linkages Electrical System: Battery, alternator, starter, wiring diagrams, lighting, accessories Climate Control: Air conditioning system, heater core, climate control module Body And Chassis: Body panels, doors, hood, trunk, interior trim, glass, structural components Exhaust System: Exhaust manifolds, catalytic converters, mufflers, pipes Cooling System: Radiator, coolant hoses, water pump, thermostat Comfort Features: Power windows, seats, mirrors, sunroof (if equipped) Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, fluid level checks Troubleshooting: Diagnostic procedures for common and complex issues across all systems Repair Procedures: Detailed step-by-step instructions for component removal, installation, and repair Rebuilding: Engine, transmission, and other major component rebuild procedures Adjustments: Valve adjustments, ignition timing, idle speed, fuel system adjustments Diagnostic Charts: Flowcharts and symptom-based troubleshooting guides Wiring Diagrams: Comprehensive electrical schematics for all circuits Technical Depth Level Of Detail: Professional-grade, comprehensive coverage Diagrams Illustrations: Hundreds of detailed photos and exploded diagrams Component Identification: Clear identification of all parts and sub-assemblies Torque Specifications: All necessary torque values for fasteners Clearances Tolerances: Engine component clearances, bearing tolerances, etc. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Searchability: Likely searchable text content within the PDF Print Quality Printability: Printable (single pages or entire manual) Binding Type Digital Format: N/A (Digital Download) Paper Type Digital Format: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: M116 E38 Configuration: 3.8L (3839 cc) V8 SOHC Bore X Stroke: 92.0 mm x 71.5 mm Compression Ratio: 8.3:1 Performance Horsepower: 158 hp @ 4750 rpm (US Spec) Torque: 210 lb-ft @ 2500 rpm (US Spec) Fuel System Fuel Delivery: Bosch CIS-E (Continuous Injection System - Electronic) Fuel Type: Unleaded Premium Gasoline (91+ Octane) Cooling System Coolant Capacity: 10.5 Liters (approx.) 🔧 Transmission Standard Type: 4-speed automatic (722.3) Optional Type: None (4-speed automatic was standard) Features Fluid Type: MB 236.1 (ATF Dextron II) Fluid Capacity: 8.5 Liters (approx. for torque converter and transmission) 📐 Dimensions Exterior Length: 4960 mm (195.3 in) Width: 1790 mm (70.5 in) Height: 1430 mm (56.3 in) Wheelbase: 2800 mm (110.2 in) Weights Curb Weight: 1750 kg (3858 lbs) 🛡️ Safety Features Ratings Era Specific Ratings: NHTSA ratings not directly comparable to modern standards; focused on passive safety features for its time. Active Features ABS: Standard Anti-lock Braking System (ABS) Passive Features Airbags: Driver airbag (optional early, standard later in W126 production, likely standard for 1982-83 models as an option that became common) Seatbelts: Inertia-reel seatbelts with pre-tensioners Chassis Design: Reinforced safety cell, crumple zones 💡 Technology Features Infotainment Audio System: Factory AM/FM stereo with cassette player, optional power antenna. Driver Assistance Cruise Control: Standard electronic cruise control. Connectivity Communication Systems: N/A (No integrated Bluetooth or modern connectivity) 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 km or 12 months, whichever comes first (using synthetic oil, consult manual for specific type). Transmission Fluid Change: Recommended every 60,000 km or 36 months (filter replacement usually done concurrently). Spark Plug Replacement: Bosch W10AC or equivalent, typically every 20,000-30,000 km. Fluid Specifications Engine Oil Specification: API SG/SH or ACEA A2/A3, viscosity SAE 15W-40 or 10W-40 (consult manual for exact recommendation and synthetic options). Coolant Specification: MB-Approved Antifreeze/Coolant (e.g., G48 concentrate mixed 1:1 with distilled water) Known Issues Headliner Sagging: Common issue with aging adhesive, leading to sagging fabric. Window Regulator Failure: Electrically operated window mechanisms can wear out. Rubber Seals Deterioration: Door, window, and sunroof seals degrade with age, leading to leaks. K-Jetronic Issues: Fuel pressure regulator, air flow meter, and injectors can be sensitive to dirt and age. Climate Control Actuators: Vacuum actuators for climate control flaps can fail. 📚 Vehicle History Brand Heritage Manufacturer: Daimler-Benz AG Model Evolution W126 Generation: First generation of the S-Class Coupe 380Sec Introduction: Launched in 1981...