🏷️ Basic Information Identification Make: Mercedes-Benz Model: W126 S-Class Model Variant: SE Model Year: 1979 Codes Chassis Code: W126 👋 Introduction Market Position Market Position: Premium luxury sedan, representing Mercedes-Benz's flagship offerings for the era. Competitive Analysis Competitors: Competed against other high-end sedans such as BMW 7 Series, Jaguar XJ, and Cadillac Fleetwood. Key Features Key Features: Exceptional build quality, advanced engineering for its time, sophisticated ride comfort, and elegant styling. Manual Utility Manual Utility: Provides detailed, vehicle-specific instructions to empower owners and technicians for maintenance and repair. 📋 Manual Details Coverage Areas All Models And Repairs: A-Z Page Count Estimated Page Count: Not specified, but comprehensive for full service Manual Type Manual Type: Factory Service and Repair Manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine System: Complete diagnosis, overhaul, and repair of all engine components. Fuel System: Fuel injection system (K-Jetronic), fuel pump, lines, and tank service. Emission Control: Diagnosis and repair of emission control systems, including catalytic converter operation. Cooling System: Radiator, fan, water pump, thermostat, and coolant flow diagnostics. Lubrication System: Oil pump, oil filter, lubrication passages, and oil pressure checks. Ignition System: Distributor, ignition coil, spark plugs, and timing adjustments. Charging System: Alternator, voltage regulator, battery, and charging circuit diagnosis. Automatic Transmission: Service, overhaul, and diagnosis of automatic transmission (e.g., 4-speed 722.1). Manual Transmission: Service and repair of manual transmission options, if applicable for SE variant. Drive Axle And Differential: Rear axle assembly, differential service, and drive shaft maintenance. Suspension System: Front and rear suspension, shock absorbers, springs, and bushings. Brake System: Hydraulic brake system, calipers, rotors, brake lines, and ABS (if applicable). Parking Brake: Operation, adjustment, and repair of the parking brake mechanism. Steering System: Steering column, steering gear, and power steering system service. Air Conditioning: Diagnosis, recharging, and repair of the A/C system. Electrical System: Comprehensive wiring schematics, component testing, and diagnosis. Body And Interior: Door locks, windows, seats, instrument panel, exterior trim, and interior panels. Cruise Control: Diagnosis and repair of the cruise control system. Wiper And Washer: Wiper motor, linkage, and washer system service. Supplemental Restraint System: Seat belt mechanisms and related components. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, and inspections. Diagnostics: Troubleshooting guides, fault code interpretation (where applicable), and systematic diagnostic procedures. Repair: Detailed step-by-step repair instructions for all vehicle systems. Overhaul And Rebuild: Complete procedures for engine, transmission, and major component overhauls. Wiring Schematics: Complete and detailed electrical wiring diagrams for all vehicle circuits. Specifications: Torque values, clearances, fluid capacities, and other critical specifications. Technical Depth Technical Depth: Factory-level, in-depth technical information for professional technicians and serious DIY enthusiasts. 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Print Quality Printability: All pages are printable, with ability to enlarge images. Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) Software Requirements Required Software: Adobe PDF Reader, Winzip (free online) Compatibility Operating Systems: Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac compatible ⚙️ Engine Specifications Primary Engine Engine Type 1979 Se: Inline-6, SOHC Engine Displacement 1979 Se: 2.8 Liters (2746 cc) Engine Code Typical: M110 Performance Horsepower 1979 Se: Approximately 138-142 hp (DIN) depending on market and tune Torque 1979 Se: Approximately 220-225 Nm (DIN) depending on market and tune Fuel System Fuel Injection System: Bosch K-Jetronic (CIS - Continuous Injection System) Fuel Type Required: Unleaded gasoline (Octane rating varies by market) 🔧 Transmission Standard Standard Transmission: 4-speed automatic transmission (e.g., 722.1) Optional Optional Transmission: 5-speed manual transmission (less common on SE, more on SEC/SD) Features Automatic Transmission Features: Hydraulically controlled, smooth shifting, torque converter lock-up (in higher gears). 📐 Dimensions Exterior Wheelbase: 2,935 mm (115.6 inches) Length: 4,995 mm (196.7 inches) Width: 1,800 mm (70.9 inches) Height: 1,428 mm (56.2 inches) Weights Curb Weight Approx: 1,650 - 1,750 kg (3,638 - 3,858 lbs) 🛡️ Safety Features Ratings Safety Ratings: Not officially rated by modern standards, but known for robust construction. Active Features Active Safety Features: Four-wheel disc brakes with ABS (Anti-lock Braking System) availability. Passive Features Passive Safety Features: Reinforced passenger cell, crumple zones, padded interior surfaces, laminated windshield. 💡 Technology Features Infotainment Infotainment System Type: Period-appropriate analog radio, cassette player. Later models may have had upgraded audio systems. Driver Assistance Driver Assistance Features: Cruise control, power windows, power seats, power steering, ABS (Anti-lock Braking System). Connectivity Connectivity Features: Limited by era; primarily focused on internal systems and basic vehicle operation. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000 - 7,500 miles (8,000 - 12,000 km) or annually, refer to manual for specific mileage. Major Service Interval: 30,000 - 60,000 miles (50,000 - 100,000 km) for checks of major components, belts, hoses. Fluid Specifications Engine Oil Type: API SG/SH or equivalent, viscosity 10W-40 or 20W-50 (depending on climate and specific...