🏷️ Basic Information Identification Make: Mercedes-Benz Model: C-Class Generation Codename: W203 Model Years Covered By Manual: 2001, 2002, 2003, 2004, 2005, 2006, 2007 👋 Introduction Market Position Segment: Compact Executive / Entry-Level Luxury Target Audience: Individuals seeking premium quality, comfort, and performance in a compact luxury vehicle Competitive Analysis Key Competitors: BMW 3 Series (E46), Audi A4 (B6), Lexus IS, Volvo S60 Key Features Of Vehicle Design Philosophy: Elegant styling, refined interior, strong emphasis on safety and comfort Powertrain Options: Range of efficient and powerful inline-4 and V6 gasoline engines, and common-rail diesel engines Innovative Technologies: Advanced safety systems (e.g., ESP, PRE-SAFE availability), sophisticated climate control 📋 Manual Details Coverage Areas Comprehensive Coverage: Yes Engine Coverage: All gasoline and diesel variants for the specified years Transmission Coverage: Automatic and Manual transmissions Body Style Coverage: Sedan, Coupe, and Wagon (T-Model) Page Count Estimated Page Count: Extensive (typically 2000+ pages for a complete workshop manual) Manual Type Type: Complete Workshop Service and Repair Manual Purpose: Diagnosis, repair, maintenance, and overhaul procedures Language Language: English Format Format: Downloadable Digital Format (typically PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, cylinder head, pistons, crankshaft, camshafts, timing, lubrication, cooling Engine Management: Fuel injection, ignition system, electronic control unit (ECU), sensors, emission control Transmission Mechanical: Automatic transmission (e.g., 722.6 '5G-TRONIC') overhaul, manual transmission overhaul, clutch Transmission Electronic: Transmission control module (TCM) diagnostics, shifting solenoids, mechatronics unit Brakes: Hydraulic system, ABS, ESP (Electronic Stability Program), brake pads, rotors, calipers, parking brake Suspension: Front and rear suspension components, shock absorbers, springs, bushings, alignment Steering: Power steering system, steering rack, steering column, tie rod ends Electrical System Overview: 12V battery, alternator, starter, wiring diagrams, fuses, relays Body Electrical: Lighting, wipers, power windows, door locks, mirrors, seats, interior trim Climate Control: HVAC system, A/C compressor, refrigerant, heater core, climate control module Infotainment Audio: COMAND system, Audio 20, speaker systems, antenna module (coverage may vary) Safety Systems: Airbags (SRS), seatbelt pretensioners, crash sensors Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks and top-offs Component Removal Installation: Engine, transmission, suspension components, brake assemblies, body panels, interior components Troubleshooting Diagnostics: Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, electrical testing procedures Rebuild Procedures: Engine and transmission overhaul procedures, detailed step-by-step instructions Electrical Diagnostics: Wiring diagrams interpretation, component testing, signal tracing Bodywork Repair: Panel replacement, dent repair, rust prevention (general guidelines) Specifications Data: Torque specifications, clearances, fluid capacities, electrical parameters Technical Depth Depth: Comprehensive, from basic maintenance to complete engine and transmission rebuilds Diagnostic Tools: Information to guide the use of Mercedes-Benz diagnostic tools (e.g., STAR Diagnosis) 📊 Manual Specifications File Format Format: PDF Searchability: Fully searchable text content Printability: Printable pages for ease of use in a workshop environment Print Quality Image Resolution: High-resolution diagrams and illustrations Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Codes Examples: M271 (1.8L/2.0L Supercharged I4), M111 (2.0L Supercharged I4), M112 (2.6L/3.2L V6), OM611 (2.1L Diesel I4), OM646 (2.1L Diesel I4) Performance Horsepower Range: Approx. 120 HP (C200 CDI) to 272 HP (C350) Torque Range: Approx. 200 Nm (C200 CDI) to 350 Nm (C320 CDI) Fuel System Fuel Delivery Gasoline: Electronic Fuel Injection (EFI) / Sequential Multipoint Fuel Injection (SMPI) Fuel Delivery Diesel: Common Rail Direct Injection (CDI) Engine Features Supercharging: Availability of supercharged engines (e.g., M271 Kompressor) Valvetrain: DOHC (Double Overhead Camshafts), 4 valves per cylinder Emission Control: Catalytic converters, EGR (Exhaust Gas Recirculation) for diesel models 🔧 Transmission Standard Standard Transmission Type: 5-speed or 6-speed Manual Transmission (RWD) Optional Optional Transmission Type: 5-speed or 7-speed Automatic Transmission (RWD, 4MATIC AWD available on select models) Features Automatic Features: Tiptronic (manual shifting capability), Comfort/Sport modes Manual Gear Ratios: Specific ratios provided in the manual for each engine variant Fluid Specifications Automatic Transmission Fluid: MB-Approval 236.10 or 236.14 (e.g., ATF LT 71141 or equivalent) Manual Transmission Fluid: MB-Approval 235.10 or equivalent GL-4/GL-5 gear oil (specific viscosity to be checked) 📐 Dimensions Exterior Wheelbase: Approx. 2715 mm (106.9 in) Length: Approx. 4526 mm (178.2 in) for Sedan Width: Approx. 1729 mm (68.1 in) Height: Approx. 1407 mm (55.4 in) for Sedan Cargo Trunk Volume: Approx. 455 liters (16.1 cu ft) for Sedan Weights Curb Weight Range: Approx. 1450 kg - 1650 kg (3200 lbs - 3630 lbs) depending on engine and options Towing Capacity: Generally not specified for standard passenger models, check local regulations and manual 🛡️ Safety Features Ratings NHTSA Rating: Good in frontal offset and side impact tests (IIHS, based on available data for the era) Euro Ncap Rating: 4 stars (for early W203 models, updated ratings might apply) Active Features Stability Control: Standard ESP (Electronic Stability Program) across most models Traction Control: Standard TCS (Traction Control System) Braking Systems: ABS (Anti-lock Braking System), Brake Assist (BAS) Passive Features Airbags: Frontal...