🏷️ Basic Information Identification Make: Mercedes-Benz Model: 400 SE Year: 1992 Codes Chassis Code: W140 👋 Introduction Market Position Positioning: The Mercedes-Benz W140 S-Class represented the pinnacle of luxury and engineering for its era, positioning the 400 SE as a high-performance, technologically advanced executive sedan. Competitive Analysis Competitors: Competed with other flagship luxury sedans of the early 1990s, such as the BMW 7 Series (E32), Lexus LS 400, and Jaguar XJ. Key Features Distinguishing Features: Known for its robust build quality, advanced safety features for the time, powerful V8 engine, and opulent interior. The 400 SE specifically offered a balance of performance and refinement. 📋 Manual Details Coverage Areas Systems Covered: Engine mechanical, engine electrical, fuel system, ignition system, cooling system, lubrication system, exhaust system, drivetrain, transmission (automatic), brakes, steering, suspension, chassis, body, electrical system, climate control, infotainment, safety systems. Page Count Estimated Pages: 1500+ Manual Type Type: Complete Workshop Service Repair Manual Language Language: English Format Format: Downloadable Digital File (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed disassembly, inspection, repair, and reassembly of all engine components including cylinder head, block, pistons, connecting rods, crankshaft, camshafts, valves, timing system. Engine Electrical: Troubleshooting and repair of starting system, charging system, ignition system (including distributorless ignition system components for this era), engine control unit (ECU) diagnostics and wiring. Fuel System: Bosch KE-Jetronic fuel injection system details, fuel pump, injectors, fuel pressure regulator, air flow meter, troubleshooting fuel delivery and mixture issues. Transmission: Detailed procedures for the 4-speed automatic transmission (e.g., 722.3 or 722.4 series), including hydraulic control, torque converter, valve body, and shift control system. Brakes: ABS (Anti-lock Braking System) operation and troubleshooting, hydraulic brake system, brake pad and rotor replacement, brake fluid specifications and bleeding procedures. Suspension Steering: Front and rear suspension component identification, replacement (e.g., control arms, shock absorbers, springs), power steering system diagnosis and repair, wheel alignment specifications. Electrical Body: Comprehensive wiring diagrams, lighting systems, power windows, power seats, central locking, exterior and interior trim removal and installation, body panel repair. Procedures Included Maintenance: Routine scheduled maintenance, oil changes, filter replacements, spark plug replacement, coolant flushes, brake fluid changes, lubrication points. Troubleshooting: Systematic diagnostic procedures for common and uncommon faults, fault code interpretation (where applicable for the era), electrical system troubleshooting charts. Repair: Detailed step-by-step instructions for component replacement, overhaul, and repair across all vehicle systems. Technical Depth Depth: Comprehensive, from basic routine maintenance to complete engine and transmission overhauls, advanced electrical diagnostics, and bodywork. 📊 Manual Specifications File Format Quality: High-resolution, optimized for readability and printing. Likely contains searchable text for efficient navigation. Print Quality Printability: Fully printable, allowing users to print individual pages, chapters, or the entire manual. Binding Type Digital Binding: N/A (Digital format, user can bind printed copy) Paper Type Digital Paper Type: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Code: M119 Configuration: 4.2L V8 SOHC (later DOHC in some variants, but the 1992 400 SE typically featured the SOHC M119) Performance Horsepower: Approx. 270-280 hp (SAE net) Torque: Approx. 280-290 lb-ft (SAE net) Fuel System Injection Type: Bosch KE-Jetronic Electronic Fuel Injection with Lambda control Fuel Type: Premium Unleaded Gasoline (91+ octane recommended) 🔧 Transmission Standard Type: 4-Speed Automatic Transmission Transmission Code: 722.3xx or 722.4xx series Features Shift Modes: Standard and Economy (E) modes for selectable driving characteristics. 📐 Dimensions Exterior Length: Approx. 5120 mm (201.6 in) Width: Approx. 1890 mm (74.4 in) Height: Approx. 1480 mm (58.3 in) Weights Curb Weight: Approx. 1800-1900 kg (3968-4189 lbs) 🛡️ Safety Features Ratings Ratings: While official NHTSA ratings for this specific year/model are scarce, the W140 was engineered with a strong emphasis on structural integrity and safety features. Expected to perform well in era-appropriate crash testing. Active Features Features: Anti-lock Braking System (ABS), Traction Control System (ASR - Acceleration Skid Control, standard on some later W140 models, might be optional or absent on early 400 SE). Passive Features Features: Driver and front passenger airbags, reinforced safety cage, crumple zones, side-impact protection beams, seatbelt pre-tensioners. 💡 Technology Features Infotainment System: Basic AM/FM stereo with cassette player, often with premium sound system options. Navigation systems were nascent and rare at this price point for 1992. Climate control system with automatic temperature regulation. Driver Assistance Features: ABS, cruise control. Limited advanced driver-assistance systems compared to modern vehicles. Features like automatic climate control and power seat memory were considered high-tech for the era. Connectivity Features: N/A in the modern sense (no Bluetooth, USB, or integrated smartphone connectivity)." 🔧 Maintenance Service Intervals Oil Change: Every 7,500-10,000 miles or 12 months, whichever comes first, depending on driving conditions. Consult manual for specific recommendations. Transmission Fluid Change: Every 30,000-60,000 miles (dependent on manufacturer recommendation and fluid type used; often considered 'lifetime' but regular changes are recommended for longevity). Coolant Change: Every 2-3 years or 30,000-40,000 miles. Fluid Specifications Engine...