🏷️ Basic Information Identification Make: Mercedes-Benz Model: S-Class (W140) Product Name: Mercedes-Benz Model 140 STAR Classic Service Repair Manual Product Description: COMPLETE Service/ Workshop Manual for Mercedes-Benz Model 140 in PDF format. These are the same manuals given to the workshop and contain detailed instructions and step-by-step procedures. 👋 Introduction Market Position Brand Image W140: Flagship luxury sedan representing the pinnacle of automotive engineering and comfort in its era. Competitive Analysis Competitors W140: BMW 7 Series (E32/E38), Lexus LS 400 (XF10), Jaguar XJ (XJ40/XJ8). Key Features W140 Highlights: Dual-pane acoustic glass, advanced climate control, advanced suspension options, powerful V8 and V12 engines, robust build quality, extensive safety features. 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive workshop and service procedures for the Mercedes-Benz W140 S-Class. Page Count Estimated Page Count: 5000+ Manual Type Manual Classification: Factory Authorized Service/Workshop Manual Language Primary Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical (M119, M120 V8/V12, OM603/OM605/OM606 Diesel), fuel injection, ignition, exhaust, cooling, lubrication. Transmission: Automatic transmission (722.3, 722.4, 722.6), manual transmission (limited availability on W140), clutch systems. Chassis: Suspension (including self-leveling suspension, hydropneumatic front axle), steering, brakes (ABS, ASR, SBC), wheels, tires. Electrical: Wiring diagrams, starter, alternator, battery, lighting, instrumentation, comfort features, power accessories, CAN bus systems (later models), diagnostic procedures. Body And Interior: Body panels, doors, windows, sunroof, seats, climate control (THERMOTRONIC, THERMATIC), sound insulation, interior trim, safety equipment (airbags, seatbelt pretensioners). Procedures Included Maintenance Tasks: Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement, brake pad/rotor replacement, battery maintenance. Repair Operations: Engine overhaul, transmission rebuild, brake system repair, suspension component replacement, electrical component diagnosis and repair, bodywork repair, climate control system servicing. Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs), specific test procedures for various systems, electronic diagnosis using STAR Diagnostic System (SDS) concepts. Technical Depth Diagnostic Capabilities: Advanced electronic diagnostics, component testing, sensor signal analysis, system-specific fault isolation. Rebuild Procedures: Detailed engine, transmission, and differential rebuild procedures with torque specifications and assembly tolerances. Special Tools: Identification of specialized tools required for specific repair and diagnostic procedures. 📊 Manual Specifications File Format PDF Quality: High-resolution scans, searchable text (OCR optimized where applicable). Print Quality Printability: Printable pages, suitable for printing and binding into a physical manual. Binding Type Binding Recommendation: Suitable for three-ring binder or professional coil binding. Paper Type Paper Recommendation: Suggests printing on durable, high-quality paper for workshop use. ⚙️ Engine Specifications Primary Engine Engine Codes Covered: M119 (4.2L, 5.0L, 5.5L V8), M120 (6.0L V12), OM603 (3.0L 6-cylinder Diesel), OM605 (2.5L 5-cylinder Diesel), OM606 (3.0L 6-cylinder Diesel, Turbo Diesel). Performance M119 500Sel Power: Approx. 322 hp @ 5500 rpm M120 600Sel Torque: Approx. 428 lb-ft @ 3800 rpm Om606 Turbo Power: Approx. 177 hp @ 4400 rpm Fuel System Fuel Injection Type: Bosch Motronic (M119, M120), Bosch EDC (Diesel). Fuel Type: Premium Unleaded Gasoline (Octane 91+), Diesel Fuel (for Diesel variants). 🔧 Transmission Standard W140 Standard Transmission: 4-speed Automatic (722.3, 722.4) Optional W140 Optional Transmission: 5-speed Automatic (722.6 '5G-TRONIC') - introduced later in the W140 lifecycle. Features Transmission Control: Electronic transmission control (later models), hydraulic control (earlier models). Transmission Fluid Spec: MB Specification 236.1 or 236.2 (for 722.3/722.4), MB Specification 236.14 (for 722.6). 📐 Dimensions Exterior W140 Sedan Length: Approx. 197.7 inches (5022 mm) W140 Coupe Wheelbase: Approx. 118.2 inches (3002 mm) Weights W140 Curb Weight: Approx. 4,500 - 5,000 lbs (2041 - 2268 kg), depending on engine and configuration. 🛡️ Safety Features Ratings Safety Standard W140: Designed to meet high global safety standards of the early to mid-1990s. Active Features Braking System: Anti-lock Braking System (ABS) standard, Acceleration Skid Control (ASR) available on later models. Passive Features Airbag Systems: Driver and front passenger airbags standard. Side airbags available on later models. Body Structure: High-strength steel safety cage, crumple zones. 💡 Technology Features Infotainment Audio System W140: Premium sound systems by Becker or Bose, often with cassette players and CD changers. Navigation: Early GPS navigation systems were available as options on later models. Driver Assistance Cruise Control: Standard TEMPOMAT cruise control. Parking Sensors: PARKTRONIC parking assist system introduced as an option later in production. Connectivity Phone System: Optional integrated car phone systems (analog). 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500 - 10,000 miles or 12 months, depending on driving conditions and oil type. Major Service Points: Spark plug replacement (e.g., 60,000 miles for iridium), transmission fluid and filter change (e.g., 40,000-60,000 miles). Fluid Specifications Engine Oil Spec: MB 229.1, 229.3, 229.5 (or equivalent API SN/CF, ACEA A3/B4) - consult owner's manual for specific viscosity grades (e.g., 0W-40, 5W-40). Coolant Spec: Mercedes-Benz Specification 325.0 or 326.0 (Antifreeze/Coolant). Known Issues W140 Common Problems: Mass Air Flow (MAF) sensor failure, ignition coil failure, vacuum leak issues, biodegradable wiring insulation breakdown, SRS system warning lights, climate control...