🏷️ Basic Information Identification Make: Mercedes-Benz Model: C320 Year: 2005 Codes Chassis Code: W203 Engine Code: M271 (Supercharged Inline-4 for C200 Kompressor, M112 V6 for C320) 👋 Introduction Market Position Market Position: The 2005 Mercedes-Benz C320 (W203 generation) occupied the premium compact executive sedan segment, competing with rivals like the BMW 3 Series, Audi A4, and Lexus IS. Competitive Analysis Competitive Analysis: The C320 was praised for its refined interior, sophisticated ride, powerful V6 engine (in the C320 variant), and Mercedes-Benz's reputation for safety and build quality, although it was often positioned as a more comfort-oriented alternative to sportier competitors. Key Features Key Features: The W203 C-Class featured a contemporary design, advanced safety features like ESP, and a range of efficient and powerful engines. The C320 model offered a balance of performance and luxury for its class. 📋 Manual Details Coverage Areas Systems Covered: Engine, Transmission, Brakes, Suspension, Steering, HVAC, Electrical Systems, Bodywork, Interior, Diagnostics, Maintenance, Troubleshooting, Wiring Diagrams, Specifications Model Variants Covered: Specifically for the C320 Sedan (W203), but may contain general information applicable to other W203 variants if shared components exist. Page Count Page Count: Extensive (Software-based, dynamic content) Manual Type Manual Type: Official Service and Repair Manual Software Language Language: English Format Format: Software (Digital Download/Online Access) 📖 Manual Coverage Systems Covered Engine: Detailed diagnosis and repair for M112 V6 engine (C320), including timing, cooling, fuel injection, lubrication, exhaust, ignition, emissions control, and supercharger system (if applicable to specific C320 variants). Transmission: Comprehensive coverage of the 722.6 (5G-TRONIC) automatic transmission, including hydraulic systems, electronic control module (TCM), gear shifting logic, torque converter, maintenance, and repair procedures. Brakes: Diagnosis and repair of the Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Brake Assist (BAS), and standard hydraulic brake components. Includes procedures for pad and rotor replacement, fluid bleeding, and component testing. Suspension Steering: Detailed information on front and rear suspension components (struts, control arms, ball joints, bushings), steering system (rack and pinion, power steering), alignment procedures, and wheel bearing replacement. Electrical Systems: Extensive electrical schematics, wiring diagrams, component locations, fuse box layouts, and troubleshooting guides for all vehicle electrical systems, including lighting, power windows, central locking, comfort systems, and diagnostic interfaces (OBD-II). Body Interior: Body panel repair, door panel removal, seat adjustment mechanisms, trim piece replacement, and interior component diagnostics. Comfort Control: HVAC system diagnosis, blower motor replacement, climate control module troubleshooting, refrigerant system service (with appropriate precautions). Procedures Included Maintenance: Scheduled maintenance tasks, oil changes, filter replacements (oil, air, cabin, fuel), spark plug replacement, fluid checks and top-offs, tire rotation, and brake inspections. Repair Rebuild: Step-by-step instructions for engine component repair (e.g., cylinder head, pistons, valves), transmission overhaul, brake caliper replacement, suspension arm replacement, and body panel repair. Diagnostics Troubleshooting: Systematic diagnostic procedures for identifying and resolving common and complex issues using diagnostic trouble codes (DTCs), live data analysis, component testing, and wiring diagram interpretation. Installation Replacement: Procedures for replacing common wear items such as belts, hoses, spark plugs, brake pads, rotors, filters, and other service components. Technical Depth Technical Depth: Expert-level, covering complete vehicle diagnostics, repair, and rebuilding procedures, suitable for professional technicians and advanced DIY enthusiasts. Diagnostic Tools Required: Requires a Mercedes-Benz compatible diagnostic scanner (e.g., STAR Diagnosis/XENTRY) for advanced troubleshooting and module programming. 📊 Manual Specifications File Format File Format: Proprietary software format with searchability and interactive diagrams. Print Quality Print Quality: N/A (Digital Format) Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) Completeness Completeness: Officially licensed and comprehensive, covering all aspects of service, repair, diagnostics, and maintenance as intended by the manufacturer. Searchability Searchability: Software format allows for keyword searching of specific procedures, parts, or symptoms. ⚙️ Engine Specifications Primary Engine Engine Type: 3.2L V6 SOHC (M112 E32) Displacement: 3199 cc (195.2 cu in) Performance Horsepower: 215 hp @ 5750 rpm Torque: 229 lb-ft @ 3000-4500 rpm Fuel System Fuel Injection: Sequential Multi-Point Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Cooling System Coolant Type: MB-Approval 325.0 Coolant (Glysantin G05 or equivalent) Emission Controls Emission Controls: Catalytic converter, oxygen sensors, secondary air injection system (depending on market), crankcase ventilation (PCV). 🔧 Transmission Standard Transmission Type: 5-speed automatic (722.6 5G-TRONIC) Optional Optional Transmission: None offered for C320 in 2005 Features Transmission Features: TouchShift (manual shifting control), electronically controlled gear selection, adaptive shift programs. Fluid Specifications Transmission Fluid Type: MB-Approval 236.10 ATF (e.g., Mobil ATF 134) 📐 Dimensions Exterior Length: 177.7 in (4513 mm) Width: 68.0 in (1727 mm) Height: 55.7 in (1415 mm) Wheelbase Wheelbase: 106.7 in (2710 mm) Weights Curb Weight: 3450 lbs (1565 kg) approx. Interior Interior Volume: Approx. 95.7 cu ft (passenger), 12.6 cu ft (trunk) 🛡️ Safety Features Ratings NHTSA Front Impact: 5 Stars NHTSA Side Impact: 5 Stars IIHS Frontal Offset: Good Active Features Active Safety Features: Anti-lock...