🏷️ Basic Information Identification Make: Mercedes-Benz Model: C230 Year: 2003 Codes Chassis Code: W203 Engine Code: M271.940 👋 Introduction Market Position Segment: Compact Executive Sedan Target Audience: Mercedes-Benz C230 owners, independent repair shops, automotive technicians. Competitive Analysis Competitors: BMW 3 Series (E46), Audi A4 (B6), Lexus IS300, Acura TL. Key Features Unique Selling Points: Officially licensed, comprehensive coverage of the 2003 C230, digital format for quick access and searchability. 📋 Manual Details Coverage Areas Systems Covered: Engine, Transmission (Automatic & Manual), Drivetrain, Suspension, Steering, Brakes (ABS/ASR/ESP), Climate Control, Electrical System, Bodywork, Interior, Safety Systems (Airbags, Seatbelts), Diagnostics & Troubleshooting Page Count Estimated Pages: 1500+ Manual Type Type: Official Service and Repair Manual Software Language Language: English Format Format: Software (Likely PDF or proprietary executable) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, timing chain, pistons, rings, crankshaft, cylinder head, valve train, lubrication system, cooling system, fuel injection, ignition system, emissions control. Engine Management: ECU diagnostics, sensor testing and replacement, ignition timing, fuel delivery control, emission component testing. Transmission Automatic: Component identification, hydraulic control, torque converter, electronic control module (ETC), shift solenoids, fluid and filter replacement, troubleshooting. Transmission Manual: Gearbox overhaul, clutch replacement, shift linkage, fluid specifications and replacement. Drivetrain: Front axle, rear axle, drive shafts, CV joints, differential service, wheel bearings. Suspension: Front and rear struts, shock absorbers, springs, control arms, ball joints, bushings, alignment procedures, specifications. Steering: Power steering system, steering rack, tie rods, steering column, alignment specifications. Brakes: Front and rear brake systems, disc brake components, caliper replacement, brake pad and rotor specifications, ABS/ASR/ESP system diagnosis and repair, hydraulic fluid specifications and bleeding procedures. Electrical System: Battery, charging system (alternator), starting system (starter motor), lighting (headlights, taillights, interior), fuses and relays, wiring diagrams, body control modules (BCM), instrument cluster. Climate Control: HVAC system operation, refrigerant handling, AC compressor, condenser, evaporator, blower motor, climate control module diagnostics. Safety Systems: Airbag system components and diagnosis, seatbelt operation, SRS module. Bodywork: Body panel removal and installation, door mechanisms, latches, hinges, exterior trim, glass replacement. Interior: Seat removal, dashboard disassembly, interior trim panels, headliner, door panels. Procedures Included Maintenance: Scheduled maintenance intervals, oil changes, filter replacements (oil, air, fuel, cabin), spark plug replacement, fluid checks and top-offs. Repair: Component removal and installation, system diagnostics, troubleshooting common faults, rebuilding procedures. Troubleshooting: Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, wiring diagrams for fault finding. Special Tools: Identification and use of Mercedes-Benz specific tools for various repair procedures. Torque Specifications: Detailed torque values for all critical fasteners. Technical Depth Depth: Comprehensive, covering from basic maintenance to complete engine and transmission overhauls. Includes detailed diagnostic procedures and component-level repairs. 📊 Manual Specifications File Format File Type: Software Application (Digital, Searchable) Print Quality Quality: High-resolution graphics, clear text, printable sections. Binding Type Binding: Not Applicable (Software) Paper Type Paper: Not Applicable (Software) ⚙️ Engine Specifications Primary Engine Engine Type: Supercharged Inline-4 (M271) Displacement: 1.8 Liters (1796 cc) Bore X Stroke: 82.0 mm x 85.0 mm Compression Ratio: 8.7:1 Valvetrain: DOHC, 4 valves per cylinder, Variable Valve Timing (VVT) Fuel Delivery: Sequential Multi-Port Fuel Injection (MPI) Forced Induction: Lysholm Type Supercharger with Intercooler Performance Horsepower: 189 hp @ 5500 rpm Torque: 200 lb-ft @ 3000-4500 rpm Fuel System Fuel Type: Premium Unleaded Gasoline (91+ Octane) Fuel Tank Capacity: 62 Liters (16.4 US Gallons) 🔧 Transmission Standard Type: 6-Speed Manual Transmission Optional Type: 5-Speed Automatic Transmission (5G-Tronic) Features Automatic Features: TouchShift, Driver-adaptive shifting logic. Manual Gear Ratios: 1st: 3.46, 2nd: 2.10, 3rd: 1.41, 4th: 1.00, 5th: 0.74, 6th: 0.83 (Reverse: 3.30) 📐 Dimensions Exterior Length: 4526 mm (178.2 in) Width: 1728 mm (68.0 in) Height: 1423 mm (56.0 in) Wheelbase: 2715 mm (106.9 in) Front Track: 1493 mm (58.8 in) Rear Track: 1472 mm (57.9 in) Weights Curb Weight: Approx. 1500 kg (3307 lbs) Gross Weight Rating: Approx. 2040 kg (4500 lbs) Cargo Trunk Volume: 455 Liters (16.1 cu ft) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (for models equipped with side airbags) IIHS Front Offset: Good Active Features ABS: Anti-lock Braking System (ABS) Esp: Electronic Stability Program (ESP) Asr: Acceleration Slip Regulation (ASR) Passive Features Airbags: Front, Side, and Window Airbags (Standard/Optional depending on trim) Seatbelts: 3-point inertia-reel seatbelts with pre-tensioners and force limiters. 💡 Technology Features Infotainment Audio System: Optional COMAND (Cockpit Management and Navigation) system, AM/FM/CD player, optional Bose sound system. Driver Assistance Cruise Control: Standard Cruise Control with speed limiter. Connectivity Optional Features: Optional integrated telephone, CD changer, navigation system. 🔧 Maintenance Service Intervals Oil Change Interval: Flexible Service System (ASSYST) - typically 10,000-15,000 miles or 1 year, whichever comes first. Major Service Interval: Variable (dependent on ASSYST indicators, often around 30,000-60,000 miles for spark plugs, filters, etc.) Fluid Specifications Engine Oil: MB Approval 229.5 (e.g., Mobil 1 0W-40, Castrol Edge 0W-40) Transmission Fluid Auto: MB Approval 236.10 or 236.12 (e.g., Pentosin ATF1,...