🏷️ Basic Information Identification Make: Mercedes-Benz Model: CLK Class Chassis Codes: C209 (Coupe), A209 (Cabriolet) Model Year: 2003 👋 Introduction Market Position Segment: Compact Executive Grand Tourer (GT) Competitive Analysis Competitors 2003: BMW 3 Series Coupe/Convertible, Audi A4 Cabriolet, Lexus IS Convertible (later models), Infiniti G35 Coupe. Key Features Design Philosophy: Combines sporty coupe/convertible styling with Mercedes-Benz luxury, comfort, and build quality. Target Audience: Discerning buyers seeking a stylish, comfortable, and reliable premium sports coupe or convertible. 📋 Manual Details Coverage Areas Primary Markets: Global (primarily North America and Europe) Variant Coverage: Includes all engine and transmission variants for C209/A209 chassis in 2003 Page Count Estimated Pages: 1500+ Manual Type Type: Factory Service Repair Workshop Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, ignition system, exhaust system, engine management (ECU), transmission (automatic). Chassis: Suspension (front and rear), steering system, brakes (hydraulic, ABS, ESP), wheels and tires. Electrical: Body electrical systems, lighting, instrumentation, power windows, mirrors, seats, climate control, SRS (airbag) system, infotainment wiring. Body: Body structure, exterior panels, doors, hood, trunk, convertible top mechanism (A209), interior trim, bumpers. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, inspections. Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs), common fault identification. Repair: Step-by-step repair procedures for all major mechanical, electrical, and body components. Rebuilds: Detailed instructions for engine and transmission disassembly, inspection, and reassembly. Technical Depth Depth: Comprehensive factory-level technical information, suitable for professional technicians and advanced DIY enthusiasts. 📊 Manual Specifications File Format PDF Quality: High-resolution, searchable PDF with clear diagrams and schematics. Print Quality Printability: Printable pages for easy workshop use. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Code And Type: M112 E32 ML (3.2L V6 SOHC, Supercharged for AMG variants, Naturally Aspirated for standard models) Engine Code And Type Engine Code And Type Alternative: M271 E18 ML (1.8L Inline-4 Supercharged, predominantly for CLK 200 Kompressor) Engine Code And Type Alternative 2 Engine Code And Type Alternative 2: M112 E37 ML (3.7L V6 SOHC, for CLK 350 variants) Performance Horsepower Clk320: 215 hp @ 5700 rpm Torque Clk320: 221 lb-ft @ 3000-4700 rpm Horsepower Clk200 Kompressor: 163 hp @ 5300 rpm Torque Clk200 Kompressor: 177 lb-ft @ 3000-4300 rpm Fuel System Injection Type: Sequential Multi-Port Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 Octane or higher recommended) 🔧 Transmission Standard Transmission Type: 5-Speed Automatic (722.6 '5G-TRONIC') Optional Transmission Type Optional: 6-Speed Manual (less common, primarily for European market CLK 200 Kompressor) Features Automatic Features: TouchShift (driver-selectable manual shifting), Comfort and Sport modes. 📐 Dimensions Exterior Length C209: 4631 mm (182.3 in) Width C209: 1741 mm (68.5 in) Height C209: 1387 mm (54.6 in) Wheelbase: 2717 mm (107.0 in) Cargo Trunk Volume C209: 370 L (13.1 cu ft) Trunk Volume A209: 330 L (11.6 cu ft) with roof up, reduced with roof down. Weights Curb Weight Clk320 Coupe: Approx. 1590 kg (3505 lbs) 🛡️ Safety Features Ratings NHTSA Front Impact: 4/5 Stars (driver and passenger) IIHS Front Offset: Good Active Features Stability Control: Electronic Stability Program (ESP) standard. Braking System: Anti-lock Braking System (ABS), Brake Assist (BAS). Passive Features Airbags: Front airbags, side airbags, front and rear head protection airbags. Convertible Rollover Protection: Pop-up roll bars integrated behind rear headrests (A209). 💡 Technology Features Infotainment Audio System: COMAND (Cockpit Management and Navigation) optional, with CD player, radio, optional navigation. Display: Central LCD display for COMAND system, instrument cluster information. Driver Assistance Cruise Control: Standard cruise control with speed limiter. Parking Assistance: Optional PARKTRONIC parking sensors. Connectivity Phone Integration: Optional Bluetooth hands-free preparation (MHI - Mobile Handset Interface). 🔧 Maintenance Service Intervals Oil Change Interval: Flexible: every 10,000-15,000 miles or 12 months, based on 'Service A'/'Service B' indicators. Major Service Interval: Example: Service B typically around 20,000-25,000 miles, includes more comprehensive checks and fluid changes. Fluid Specifications Engine Oil Spec: MB 229.5 (e.g., Mobil 1 0W-40, Castrol Syntec 0W-30/0W-40). Transmission Fluid Spec: MB 236.14 (for 5-speed automatic - ATF 722.6). Coolant Spec: MB 325.0 or 326.0 (Ethylene Glycol based, blue or green). Known Issues Common Electrical: Window regulators, SAM module issues, MAF sensor failures, O2 sensors. Common Mechanical: Crankshaft position sensors, ignition coils, transmission conductor plate, cooling system leaks (e.g., hoses, water pump). Common Body A209: Convertible top hydraulic system issues, seal degradation. 📚 Vehicle History Brand Heritage Manufacturer: Mercedes-Benz AG, a subsidiary of Daimler AG. Model Evolution Predecessor: CLK Class W208. Platform Sharing: Based on the W203 C-Class platform. Production Production Years: 2002-2009 (for C209/A209 generation). Manufacturing Locations: Germany (Sindelfingen, Bremen). 🏆 Awards & Recognition Recognitions Typical Awards For Mb Models: Often praised for safety, build quality, and comfort. Specific awards for CLK W209 may include automotive journalist accolades for design and performance.