🏷️ Basic Information Identification Make: Mercedes-Benz Model: S-Class Year: 1999 Codes Chassis Code: W220 👋 Introduction Market Position Segment: Full-size luxury sedan Target Audience: Luxury car buyers seeking comfort, technology, and performance Competitive Analysis Key Rivals: BMW 7 Series, Audi A8, Lexus LS, Jaguar XJ Key Features Prestige: Represents the pinnacle of Mercedes-Benz engineering and luxury for its era Technology Advancements: Introduced many innovations like COMAND, AIRMATIC, DISTRONIC (optional) 📋 Manual Details Coverage Areas Model Variants Covered: All W220 S-Class models Repair Scope: A-Z comprehensive repair and maintenance Page Count Estimated Pages: Extensive (typically over 2000 pages for this class of vehicle and era) Manual Type Type: Factory Service Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, ignition, exhaust, cooling, lubrication Drivetrain: Automatic transmission, differential, drive axles, prop shaft Chassis: Suspension (AIRMATIC), steering, brakes (ABS, ESP), wheels, tires Electrical: 12V system, battery, charging, starting, lighting, instrument cluster, ECUs, CAN bus, SRS (Airbag), comfort modules Body: Body panels, doors, windows, locks, seats, interior trim, climate control (THERMATIC/THERMOTRONIC), lighting, wipers, exterior trim Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, belt inspection/replacement Troubleshooting: Diagnostic flowcharts, symptom-based troubleshooting, fault code interpretation Repair: Component removal and installation, adjustments, calibrations, component overhauls Diagnostics: OBD-II diagnostics, sensor testing, actuator testing, ECU programming and diagnostics Technical Depth Depth: Complete factory-level diagnostic and repair procedures Special Tools: Identification and usage of specific Mercedes-Benz special tools Schematics: Detailed electrical wiring diagrams for all systems 📊 Manual Specifications File Format Searchability: Fully searchable text Digital Fidelity: High-resolution scans/native digital format Print Quality Printability: Printable pages Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Codes: M112 (V6), M113 (V8) Displacement M112: 3.2L (3199 cc) Horsepower M112: 221 hp @ 6100 rpm Torque M112: 232 lb-ft @ 3150 rpm Displacement M113: 4.3L (4266 cc) and 5.0L (4966 cc) Horsepower M113 4.3L: 275 hp @ 6000 rpm Torque M113 4.3L: 295 lb-ft @ 3250 rpm Horsepower M113 5.0L: 302 hp @ 5600 rpm Torque M113 5.0L: 339 lb-ft @ 3250 rpm Fuel System Injection Type: Electronic Fuel Injection (EFI), Multi-point sequential Fuel Type: Premium Unleaded Gasoline (91+ octane recommended) Performance Engine Layout: V6 and V8, front-engine, longitudinal Cylinder Head: Aluminum Alloy, DOHC, 3 valves per cylinder (early M112/M113) then 4 valves per cylinder 🔧 Transmission Standard Transmission Type: 5-speed automatic (5G-Tronic) Optional Transmission Type Optional: 5-speed automatic with TOUCHSHIFT manual control (standard on some V8 models) Features Transmission Features: Electronic control, torque converter lock-up, adaptive shifting 📐 Dimensions Exterior Wheelbase: 119.5 inches (3035 mm) Length: 196.9 inches (5002 mm) Width: 73.1 inches (1857 mm) Height: 57.2 inches (1453 mm) Weights Curb Weight Approx: 3900 - 4300 lbs (1769 - 1950 kg) Gross Vehicle Weight Rating Approx: 5000 - 5400 lbs (2268 - 2449 kg) 🛡️ Safety Features Ratings NHTSA Front Impact: Not explicitly rated for 1999 model year by current NHTSA standards, but designed to high safety standards. Passive Features Airbags: Front dual-stage airbags, front side airbags, optional rear side airbags Seatbelts: Pretensioning front seatbelts, 3-point rear seatbelts Structure: High-strength steel safety cell, crumple zones Active Features ABS: Anti-lock Braking System (ABS) standard Esp: Electronic Stability Program (ESP) standard Traction Control: Traction Control System (ASR) standard 💡 Technology Features Infotainment Infotainment System: COMAND (Cockpit Management and Navigation) system, featuring radio, CD player, optional navigation, and climate control interface. Audio System: Optional Bose premium sound system Driver Assistance Driver Assistance Features: Optional DISTRONIC adaptive cruise control, parking assist (PARKTRONIC) Connectivity Connectivity: Analog cellular phone integration (often retrofitted/removed), basic diagnostic data through CAN bus. Convenience Convenience Features: Keyless-Go (optional), power everything, multi-zone climate control (THERMOTRONIC) 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000 miles or 12 months, whichever comes first (refer to manual for specific variant) Major Service Interval: Refer to manual for specific mileage/time intervals for spark plug replacement, transmission fluid service, coolant flush, etc. Fluid Specifications Engine Oil Spec M112: MB 229.3 or MB 229.5 (e.g., Mobil 1 0W-40, Castrol Syntec 5W-40) Engine Oil Spec M113: MB 229.3 or MB 229.5 (e.g., Mobil 1 0W-40, Castrol Syntec 5W-40) Transmission Fluid Type: MB 236.10 or MB 236.12 Automatic Transmission Fluid (e.g., Pentosin ATF 1) Coolant Type: MB 325.0 / 326.0 (Blue or Green ethylene glycol based, silicate-free) Brake Fluid Type: DOT 4 (MB Spec 331.0) Known Issues Common Problems General: Electronic module failures (EIS, ABC/AIRMATIC pump, ECU), oil cooler leaks, transmission control module issues, rust on rear wheel arches and sills, vacuum line degradation, ignition coil failures. Airmatic Suspension: Air spring leaks, compressor failure, valve block issues, control module malfunctions. Cooling System: Plastic coolant reservoir cracks, thermostat housing leaks. 📚 Vehicle History Brand Heritage Heritage: Mercedes-Benz has a long-standing reputation for luxury, engineering, and safety since...