🏷️ Basic Information Identification Make: Mercedes-Benz Model: C-Class Coupe Chassis Code: W203 Body Style: Coupe (C203) Generation Generation Code: Second Generation (2000-2007) 👋 Introduction Market Position Vehicle Segment: Compact Executive Coupe Competitive Analysis Key Competitors: BMW 3 Series Coupe, Audi A4 Coupe, Lexus IS Coupe Key Features Vehicle Philosophy: Combines Mercedes-Benz's luxury and build quality with a sportier, more dynamic driving experience. Target Demographic: Younger professionals, style-conscious buyers, individuals seeking a premium compact coupe. 📋 Manual Details Coverage Areas Overall Coverage: Comprehensive factory service and repair Page Count Estimated Page Count: 1500+ Manual Type Manual Classification: Factory Service Manual (FSM) / Workshop Manual Language Language Of Publication: English Format Delivery Format: Digital (PDF) 📖 Manual Coverage Systems Covered Powertrain Systems: Engine (M271, M111, OM646, OM647), Transmission (722.6, 716.x), Drivetrain, Fuel System, Exhaust System Chassis Systems: Suspension (Front MacPherson Strut, Rear Multi-link), Steering (Hydraulic Power Steering), Brakes (ABS, ESP, SBC), Wheels & Tires Electrical Systems: Body Control Module (BCM), Powertrain Control Module (PCM), CAN Bus Communication, Lighting, Power Accessories, HVAC Controls, SRS (Airbag) System Body And Interior: Body Panels, Doors, Hood, Trunk, Seats, Interior Trim, Climate Control System Procedures Included Maintenance Procedures: Oil Changes, Filter Replacements, Spark Plugs, Fluid Checks and Replacements, Belt Inspections Repair Procedures: Engine Component Replacement (Alternator, Starter, Water Pump), Transmission Repair, Brake Pad/Rotor Replacement, Suspension Component Replacement, Electrical Component Diagnosis and Replacement Diagnostic Procedures: Troubleshooting guides, Fault code interpretation, System diagnostics, Wiring diagrams analysis Technical Depth Diagnostic Complexity: Advanced diagnostic procedures including electronic control unit (ECU) diagnostics and CAN bus troubleshooting. Repair Scope: From routine maintenance to complete engine and transmission overhauls. 📊 Manual Specifications File Format File Type: Portable Document Format (PDF) Print Quality Graphic Resolution: High-resolution, clear illustrations and diagrams suitable for printing. Binding Type Binding Style: N/A (Digital Format) Paper Type Paper Quality Recommendation: N/A (Digital Format) - Recommended for printing on quality paper for workshop use. Searchability Text Searchability: Searchable text for quick information retrieval. ⚙️ Engine Specifications Primary Engine Common Gasoline Engines: M271 (1.8L Supercharged I4, 2.0L Supercharged I4), M111 (2.3L Supercharged I4 - early models) Common Diesel Engines: OM646 (2.1L Turbocharged I4 Diesel), OM647 (2.7L Turbocharged I5 Diesel - less common in coupe) Performance Horsepower Range: 143 hp to 204 hp (gasoline), 122 hp to 170 hp (diesel) Torque Range: 200 Nm to 300 Nm (gasoline), 270 Nm to 340 Nm (diesel) Fuel System Fuel Delivery Gasoline: Electronic Fuel Injection (EFI) with Bosch or Siemens components. Fuel Type Gasoline: Premium Unleaded Gasoline (RON 95 or higher recommended) Emission Control Emission Standards: Meets Euro 3 and Euro 4 emission standards, depending on model year and market. 🔧 Transmission Standard Standard Transmission: 6-speed Manual Transmission (716.x series) Optional Optional Transmission: 5-speed Automatic Transmission (722.6 '5G-TRONIC') Features Automatic Transmission Modes: Comfort (C) and Sport (S) modes. Fluid Specifications Automatic Transmission Fluid: MB Approval 236.10 or 236.12 (e.g., Shell ATF 134, Mobil ATF 134). Manual Transmission Fluid: MB Approval 235.10 (e.g., Gear Oil SAE 75W-85). 📐 Dimensions Exterior Length: Approx. 4,488 mm (176.7 in) Width: Approx. 1,727 mm (68.0 in) Height: Approx. 1,392 mm (54.8 in) Wheelbase: Approx. 2,715 mm (106.9 in) Weights Curb Weight: Approx. 1,450 kg - 1,550 kg (3,200 lbs - 3,417 lbs) Cargo Trunk Capacity: Approx. 310 liters (10.9 cu ft) 🛡️ Safety Features Ratings Euro Ncap Rating: Likely achieved 4 or 5 stars (based on W203 sedan/estate, specific coupe data may vary). Active Features Stability Control: Electronic Stability Program (ESP) standard on most models. Braking Systems: Anti-lock Braking System (ABS), Brake Assist (BAS), optional Sensotronic Brake Control (SBC) on some early models. Passive Features Airbags: Front airbags, side airbags, window airbags, optional front-seat thorax airbags. Seat Belts: Pretensioners and force limiters on front seats. 💡 Technology Features Infotainment Audio Systems: Audio 20, Audio 50 APS (optional), COMAND APS (optional) with CD player, AM/FM radio, optional navigation and CD changer. Driver Assistance Cruise Control: Standard cruise control with speed limiter. Parking Assistance: Optional Parktronic parking sensors. Connectivity Hands Free Calling: Optional Bluetooth interface for mobile phones. Lighting Headlights: Halogen projector headlights standard, optional Bi-Xenon headlights with dynamic cornering. 🔧 Maintenance Service Intervals Oil Service Interval: Typically every 10,000 to 15,000 miles or 12 months, whichever comes first (dependent on driving conditions and specific model). Major Service Intervals: Spark plugs (e.g., 60,000 miles), transmission fluid (e.g., 40,000 - 60,000 miles for automatic, less frequent for manual), coolant flush (e.g., 30,000 - 60,000 miles). Fluid Specifications Engine Oil Specification: MB Approval 229.5 (e.g., Mobil 1 0W-40, Castrol Syntec 0W-30) or 229.51 for diesel variants. Coolant Specification: MB Approval 325.0 (Antifreeze/Coolant Concentrate, e.g., Mercedes-Benz Coolant) Brake Fluid Specification: DOT 4 PLUS (MB Approval 331.0) Known Issues Common Electrical Issues: Window regulators, SAM unit failures, sensor issues (e.g., ABS wheel speed sensors), climate control blower motor resistors. Common Mechanical Issues: M271 engine timing chain wear,...