🏷️ Basic Information Identification Make: Mercedes-Benz Model: C-Class Chassis Code: W203 Product Type: Factory Service Repair Manual 👋 Introduction Market Position Market Segment: Compact Executive Sedan/Coupe/Wagon Target Audience: Luxury car buyers seeking comfort, performance, and advanced features. Competitive Analysis Key Competitors: BMW 3 Series, Audi A4, Lexus IS, Infiniti G35 Key Features Vehicle Highlights: Sophisticated interior, advanced safety systems, multiple engine options, rear-wheel drive bias (optional 4MATIC). Manual Value Proposition Benefit To Owner: Enables DIY maintenance and repairs, saving money and ensuring proper upkeep. Benefit To Professional: Provides factory-level diagnostic procedures and specifications for efficient and accurate repairs. 📋 Manual Details Coverage Areas Primary Coverage: North America & Europe Market Segment: Global Page Count Estimated Page Count: 1500+ Manual Type Type: Comprehensive Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine Mechanical, Fuel System, Ignition System, Exhaust System, Cooling System, Lubrication System Drivetrain: Transmission (Manual & Automatic), Clutch, Drive Axles, Differentials Chassis: Suspension (Front & Rear), Steering System, Brake System (Hydraulic & ABS), Wheels & Tires Electrical: Wiring Diagrams, Battery, Charging System, Starting System, Lighting, Instrumentation, Body Control Modules (BCM), Gateway Modules (CGW) Body And Interior: Body Panels, Doors, Windows, Seats, HVAC System, Interior Trim, Restraint Systems (Airbags) Diagnostics And Troubleshooting: Diagnostic Trouble Codes (DTCs), On-Board Diagnostics (OBD-II), Component Testing, Common Faults & Remedies Procedures Included Maintenance Procedures: Scheduled Maintenance, Oil Changes, Filter Replacements, Spark Plug Replacement, Fluid Flushes Repair Procedures: Engine Overhaul, Transmission Rebuild, Brake Pad/Rotor Replacement, Suspension Component Replacement, Electrical Component Diagnosis & Replacement Adjustment And Calibration: Wheel Alignment, Headlight Aiming, Throttle Body Calibration, Idle Speed Adjustment Component Replacement: Alternator, Starter Motor, Water Pump, Fuel Pump, Radiator, AC Compressor, Power Steering Pump Special Tools And Techniques: Identification and usage of specialized tools required for specific repairs and diagnostics. Technical Depth Depth: Factory-Level Diagnostic and Repair Information Diagnostics: Comprehensive diagnostic flowcharts and explanations of sensor readings. Rebuild Information: Detailed procedures for engine and transmission rebuilds, including torque specifications and clearances. 📊 Manual Specifications File Format File Type: Searchable PDF Searchability: Full text search capability Print Quality Image Resolution: High-resolution for clear illustrations and diagrams Diagram Clarity: Sharp, detailed diagrams Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Families Covered: M271 (Inline-4 Supercharged/Turbocharged), M111 (Inline-4 Supercharged - early models), M272 (V6), M112 (V6 - early models), M113 (V8 - C32/C55 AMG) Common Engines Popular Inline 4: C200 Kompressor (M271), C230 Kompressor (M271) Popular V6: C240 (M112), C320 (M112), C280 (M272), C350 (M272) Performance C200 Kompressor Hp: 163 hp (approx.) C320 Hp: 215 hp (approx.) C55 Amg Hp: 369 hp (approx.) Fuel System Injection Type: Multi-point Fuel Injection (MPI) / Direct Injection (DI) on some later models. Fuel Grade: Premium Unleaded Gasoline (91 RON or higher recommended) Cooling System Coolant Type: Mercedes-Benz approved G48 (Antifreeze/Coolant, blue) Lubrication System Oil Specification: MB 229.5 (e.g., Mobil 1 0W-40, Castrol Syntec 0W-40) Oil Capacity: Varies by engine, typically 6.5-8.5 liters. 🔧 Transmission Standard Transmission Types: 5-Speed Manual (early), 5-Speed Automatic (722.6 'NAG'), 7-Speed Automatic (722.9 '7G-TRONIC' - later models) Optional All Wheel Drive: 4MATIC All-Wheel Drive Features Automatic Modes: Comfort (C) and Sport (S) modes on automatic transmissions. Fluid Specifications Automatic Transmission Fluid: MB 236.10 or MB 236.12 (e.g., Pentosin ATF1 or equivalent) Maintenance Transmission Service Interval: Automatic: Typically every 60,000 miles or as per service indicator. Manual: Typically inspected, fluid change less frequent. 📐 Dimensions Exterior Wheelbase: 2715 mm (106.9 in) Length: 4526 mm (178.2 in) (Sedan) Width: 1728 mm (68.0 in) Height: 1423 mm (56.0 in) (Sedan) Weights Curb Weight: Varies by model, approx. 1450-1600 kg (3200-3500 lbs) Gross Vehicle Weight Rating: Varies by model Cargo Trunk Volume: Approx. 455 liters (16.1 cu ft) (Sedan) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (where tested) IIHS Front Overlap: Good (for applicable models/years) Active Features ABS: Standard Anti-lock Braking System Esp: Standard Electronic Stability Program (ESP) Traction Control: Standard Traction Control System (ASR) Passive Features Airbags: Frontal, Side, Curtain Airbags standard; Optional Front-Seat Active Head Restraints. Seatbelts: Pretensioning seatbelts with force limiters. 💡 Technology Features Infotainment Audio System: Optional COMAND (Cockpit Management and Navigation Display) system, Audio 20, Audio 5. Navigation: Optional GPS Navigation system integrated with COMAND. Driver Assistance Cruise Control: Standard Cruise Control; Optional DISTRONIC adaptive cruise control on some models. Parking Assist: Optional Parking Assist (PARKTRONIC) sensors. Connectivity Phone Integration: Optional Bluetooth hands-free communication system. Climate Control HVAC: Manual climate control or optional THERMATIC/THERMOTRONIC automatic climate control. 🔧 Maintenance Service Intervals Oil Service: Flexible service interval based on 'ASSYST' system, typically 10,000-15,000 miles or 1 year. Check Service A/B indicators. Spark Plugs: Varies by engine; typically 60,000-100,000 miles for iridium plugs. Brake Fluid Flush: Every 2 years, regardless of mileage. Fluid Specifications Coolant Capacity: Approx. 8.5 liters (varies by engine) Brake Fluid...