🏷️ Basic Information Identification Make: Mercedes-Benz Model: SLK-Class Chassis Code: R171 Year: 2009 👋 Introduction Market Position Market Position: Premium Compact Sports Roadster Competitive Analysis Competitors: BMW Z4, Porsche Boxster, Audi TT Roadster, Nissan 370Z Roadster Key Features Key Features: Retractable Vario-Roof, Compact Dimensions, Rear-Wheel Drive, Powerful Engine Options, Mercedes-Benz Build Quality and Safety 📋 Manual Details Coverage Manual Type: Complete Workshop Service Repair Manual Coverage Areas: All Models/Engines/Trim/Transmissions Types Covered Format Format: Downloadable Digital File Language: English Software Requirements: Adobe Reader (free download available) 📖 Manual Coverage Scope Systems Covered: Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, HVAC, Body & Chassis, Infotainment, Safety Systems, Convertible Hardtop Mechanism Procedures Procedures Included: Routine Maintenance, Scheduled Servicing, Troubleshooting, Diagnostic Procedures, Component Repair & Replacement, Overhaul Procedures, Wiring Diagrams, Technical Data, Torque Specifications, Alignment Procedures, Diagnostic Trouble Codes (DTCs) Depth Technical Depth: Comprehensive: From basic fluid changes and filter replacements to complex engine and transmission overhauls, electrical system diagnostics, and body panel repair. 📊 Manual Specifications Digital File Format: PDF (Portable Document Format) Print Quality: High-Resolution, Printable Pages Accessibility: Printable, Searchable Text, Downloadable to Multiple Devices (PC, Mac, Tablet, Smartphone) ⚙️ Engine Specifications Slk280 Primary Engine: 3.0L V6 (M272) Performance: Approx. 228 hp @ 6000 rpm, 221 lb-ft torque @ 2400-4500 rpm Slk350 Primary Engine: 3.5L V6 (M272) Performance: Approx. 268 hp @ 6000 rpm, 258 lb-ft torque @ 2400-5000 rpm (pre-facelift), 302 hp @ 6500 rpm, 273 lb-ft torque @ 3500-5000 rpm (post-facelift, if applicable to 2009 model year in some markets) Amg Slk55 Primary Engine: 5.4L V8 (M113 ML) Performance: Approx. 355 hp @ 5750 rpm, 391 lb-ft torque @ 4000 rpm Fuel System Fuel System: Electronic Fuel Injection (EFI), Sequential Multi-Port Engine Management Engine Management System: ME 9.7 Engine Control Unit (ECU) or similar for V6, MED 9.7 for AMG V8 🔧 Transmission Standard Standard Transmission: 6-speed Manual (optional on some models) Automatic Automatic Transmission: 7G-TRONIC 7-speed Automatic (standard on many models, optional on others) Amg Amg Transmission: AMG SPEEDSHIFT 7G-TRONIC 7-speed Automatic Features Transmission Features: Selectable Drive Modes (Comfort, Sport), Manual Shift Mode (via paddles or shifter) 📐 Dimensions Exterior Length: Approx. 4083 mm (160.8 in) Width: Approx. 1777 mm (69.9 in) Height: Approx. 1306 mm (51.4 in) Wheelbase Wheelbase: Approx. 2430 mm (95.7 in) Weights Curb Weight: Varies by engine and options, typically 1365-1540 kg (3009-3395 lbs) 🛡️ Safety Features Ratings Crash Test Ratings: While specific NHTSA/Euro NCAP ratings for the 2009 R171 are not universally published, Mercedes-Benz vehicles of this era are known for robust safety structures. Active Features Active Safety Features: ABS (Anti-lock Braking System), ESP (Electronic Stability Program), ASR (Anti-Slip Regulation), Brake Assist (BAS), Tire Pressure Monitoring System (TPMS) Passive Features Passive Safety Features: Front Airbags, Side Airbags, Head Airbags, Roll-Over Protection System (pop-up bars), Seatbelt Pretensioners, Crumple Zones 💡 Technology Features Infotainment Infotainment System: COMAND (Cockpit Management and Navigation EXperience) or Audio 20 CD Infotainment Features: Radio, CD Player, Optional Navigation, Optional Bluetooth Connectivity, Optional Harman Kardon Sound System Driver Assistance Driver Assistance Features: Optional: Bi-Xenon Headlights with Adaptive Front-lighting System, Parking Assist (Parktronic), Cruise Control Connectivity Connectivity Options: Optional Bluetooth for hands-free calling and audio streaming. 🔧 Maintenance Service Intervals Scheduled Maintenance Intervals: Typically every 10,000 miles or 12 months (whichever comes first), with specific intervals for brake fluid, coolant, transmission fluid, and spark plugs as per the service schedule. Fluid Specifications Engine Oil Type: MB 229.5 (e.g., Mobil 1 0W-40 Synthetic) Coolant Type: Mercedes-Benz Approved Antifreeze/Coolant (e.g., G05 or G48) Brake Fluid Type: DOT 4 Plus (or MB Spec 331.0) Transmission Fluid Type Auto: MB 236.14 (for 7G-TRONIC) Transmission Fluid Type Manual: MB Spec 235.10 or 235.4 (GL-4/GL-5 equivalent, consult manual for exact spec) Known Issues Common Issues: Variable Valve Timing (VVT) solenoids and related timing chain wear on M272 engines, O-ring failure in the variable intake manifold, SAM module (Signal Acquisition and Activation Module) issues, convertible top hydraulic system leaks or pump failure, serpentine belt tensioner wear. Filters Oil Filter Part Number Example: e.g., Mann-Filter HU 718/5 y, Mercedes-Benz A2721800009 Air Filter Part Number Example: e.g., Mann-Filter C 3420, Mercedes-Benz A2720900016 📚 Vehicle History Brand Heritage Brand Heritage: Founded on innovation and luxury, Mercedes-Benz has a long history of producing high-quality vehicles, including pioneering sports cars and roadsters. Model Evolution Model Evolution: The R171 is the second generation of the SLK-Class, succeeding the R170. It introduced a more aggressive styling, the innovative Vario-Roof system, and updated technology. A facelift occurred for the 2009 model year, improving styling and powertrain options. Production Production Period: 2004-2011 Manufacturing Location Manufacturing Location: Bremen, Germany 🏆 Awards & Recognition Recognitions Awards And Recognitions: While specific awards for the 2009 model year are not widely publicized, the SLK-Class has historically been recognized for its design, innovative Vario-Roof technology, and overall driving experience in its class.