🏷️ Basic Information Identification Make: Mercedes-Benz Model: C350 Year: 2009 Codes Chassis Code: W204 👋 Introduction Market Position Segment: Compact Executive Sedan Target Audience: Owners seeking to perform DIY maintenance and repairs, independent repair shops, automotive technicians Competitive Analysis Competitors: BMW 3 Series, Audi A4, Lexus IS Key Features Vehicle Strengths: Luxurious interior, refined ride quality, advanced safety features, powerful yet efficient engine Manual Value Proposition: Official licensing ensures accuracy and completeness, digital format provides quick access and searchability, covers all essential repair and maintenance aspects for the 2009 C350. 📋 Manual Details Coverage Areas Coverage: Comprehensive Service and Repair Page Count Estimated Pages: Extensive (Software dependent, typically thousands of pages in compiled digital format) Manual Type Type: Service and Repair Manual Software Language Language: English Format Format: Software (Digital Download/Online Access) 📖 Manual Coverage Systems Covered Powertrain: Engine (M272 V6), Transmission (7G-TRONIC PLUS 722.9), Differential, Exhaust System Chassis: Suspension (Front & Rear), Steering, Brakes (ABS, ESP), Wheels & Tires Electrical: Engine Control Unit (ECU), Body Control Module (BCM), Lighting Systems, Audio System, Navigation, Climate Control, CAN Bus Communication, Sensors, Actuators, Wiring Diagrams Body: Interior Trim, Exterior Body Panels, Doors, Hood, Trunk, Windows, Mirrors, Seats, HVAC System (Components) Procedures Included Maintenance: Oil changes, filter replacements, fluid checks and top-offs, tire rotation, brake inspection, battery testing Repair: Engine component replacement (spark plugs, coils, belts, hoses, pulleys), transmission service and repair, brake caliper/rotor replacement, suspension strut/bushings, steering rack, electrical component diagnosis and replacement Troubleshooting: Diagnostic trouble codes (DTCs) interpretation, symptom-based troubleshooting guides, electrical circuit analysis Special Procedures: Software updates, key programming, component calibration, fluid bleeding procedures (brake, coolant) Technical Depth Depth: Detailed step-by-step repair instructions, diagnostic flowcharts, torque specifications, electrical schematics, component identification, overhaul procedures 📊 Manual Specifications File Format Digital Features: Searchable text, hyperlinked navigation, printable sections, high-resolution diagrams Print Quality Diagram Clarity: High-resolution, clear, and detailed diagrams and illustrations Binding Type Binding: N/A (Software) Paper Type Paper Quality: N/A (Software) ⚙️ Engine Specifications Primary Engine Engine Code: M272 Engine Type: 3.5L V6 SOHC (Single Overhead Camshaft) with VVT (Variable Valve Timing) Displacement Cc: 3498 Performance Horsepower Hp: 268 Torque Lb-Ft: 258 Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type Recommended: Premium Unleaded Gasoline (91 Octane or higher) 🔧 Transmission Standard Transmission Type: 7G-TRONIC PLUS (722.9) 7-Speed Automatic Optional Optional Transmission: N/A for 2009 C350 Features Transmission Features: Driver-adaptive shift modes (Comfort, Sport), Manual mode with paddle shifters (optional), Electronic shifter Fluid Specifications Transmission Fluid Type: MB Specification 236.14 (e.g., Mobil ATF 134, Mercedes-Benz ATF V) 📐 Dimensions Exterior Length In: 180.0 Width In: 69.7 Height In: 56.2 Wheelbase In: 108.7 Interior Front Headroom In: 38.7 Rear Headroom In: 36.1 Front Legroom In: 41.7 Rear Legroom In: 35.1 Cargo Trunk Volume Cu Ft: 12.4 Weights Curb Weight Lb: 3593 Gross Vehicle Weight Rating Lb: 4586 🛡️ Safety Features Ratings NHTSA Front Crash Rating: 5-Star NHTSA Side Crash Rating: 5-Star IIHS Top Safety Pick: Yes Active Features Electronic Stability Control: Standard (ESP - Electronic Stability Program) Antilock Braking System: Standard (ABS) Traction Control: Standard (ASR - Acceleration Slip Regulation) Brake Assist: Standard (BAS - Brake Assist System) Passive Features Airbags: Front airbags (driver & passenger), front side-impact airbags, curtain airbags (front & rear), optional front-bassinet airbags Seatbelts: 3-point inertia-reel seatbelts with belt tensioners and force limiters Head Restraints: Active NECK-PRO head restraints (front) 💡 Technology Features Infotainment Infotainment System Name: COMAND (Cockpit Management and Navigation) Infotainment Features: Color LCD display, AM/FM/Weatherband radio, CD/DVD player, MP3 compatibility, optional navigation system, Bluetooth connectivity (hands-free calling), SD card slot Driver Assistance Driver Assistance Features: Optional DISTRONIC PLUS (adaptive cruise control), PARKTRONIC (parking assist), Lane Keeping Assist, Blind Spot Assist Connectivity Connectivity Options: Bluetooth for phone, optional UHI (Universal Hands-free Interface) for phone adapter, optional SiriusXM satellite radio 🔧 Maintenance Service Intervals Oil Change Interval Miles: Typically every 10,000 miles or 12 months, whichever comes first (flexible service system 'ASSYST') Major Service Interval Miles: Refer to ASSYST system or manual for specific items like spark plugs (approx. 60,000-100,000 miles), transmission fluid (check service history, often around 40,000-60,000 miles for severe use) Fluid Specifications Engine Oil Type: MB Specification 229.5 (e.g., Mobil 1 0W-40, Castrol Syntec 0W-40) Engine Oil Capacity Quarts: 8.0 (with filter) Coolant Type: MB Specification 325.0 (Blue) or 326.0 (Green) - Ethylene Glycol based Brake Fluid Type: DOT 4 Plus (MB Specification 331.0) Power Steering Fluid Type: MB Specification 345.0 (Hydraulic Fluid) Known Issues Common Complaints: Balance shaft wear on M272 engine (older models, less common by 2009 but still possible), oil leaks from valve covers/oil cooler seals, potential failure of the aux water pump, ESP/ABS sensor issues, early infotainment system glitches. Maintenance Recommendations: Adherence to flexible service schedules, use of correct MB-spec fluids, timely replacement of serpentine belt and tensioner, checking for oil leaks at regular intervals. 📚 Vehicle History Brand...