🏷️ Basic Information

Make:

Mercedes-Benz

Model:

SLK-Class

Chassis Code:

R171

Year:

2009

👋 Introduction

Market Position:

Premium Compact Sports Roadster

Competitors:

BMW Z4, Porsche Boxster, Audi TT Roadster, Nissan 370Z Roadster

Key Features:

Retractable Vario-Roof, Compact Dimensions, Rear-Wheel Drive, Powerful Engine Options, Mercedes-Benz Build Quality and Safety

📋 Manual Details

Manual Type:

Complete Workshop Service Repair Manual

Coverage Areas:

All Models/Engines/Trim/Transmissions Types Covered

Format:

Downloadable Digital File

Language:

English

Software Requirements:

Adobe Reader (free download available)

📖 Manual Coverage

Systems Covered:

Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, HVAC, Body & Chassis, Infotainment, Safety Systems, Convertible Hardtop Mechanism

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)

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

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

Primary Engine:

3.0L V6 (M272)

Performance:

Approx. 228 hp @ 6000 rpm, 221 lb-ft torque @ 2400-4500 rpm

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)

Primary Engine:

5.4L V8 (M113 ML)

Performance:

Approx. 355 hp @ 5750 rpm, 391 lb-ft torque @ 4000 rpm

Fuel System:

Electronic Fuel Injection (EFI), Sequential Multi-Port

Engine Management System:

ME 9.7 Engine Control Unit (ECU) or similar for V6, MED 9.7 for AMG V8

🔧 Transmission

Standard Transmission:

6-speed Manual (optional on some models)

Automatic Transmission:

7G-TRONIC 7-speed Automatic (standard on many models, optional on others)

Amg Transmission:

AMG SPEEDSHIFT 7G-TRONIC 7-speed Automatic

Transmission Features:

Selectable Drive Modes (Comfort, Sport), Manual Shift Mode (via paddles or shifter)

📐 Dimensions

Length:

Approx. 4083 mm (160.8 in)

Width:

Approx. 1777 mm (69.9 in)

Height:

Approx. 1306 mm (51.4 in)

Wheelbase:

Approx. 2430 mm (95.7 in)

Curb Weight:

Varies by engine and options, typically 1365-1540 kg (3009-3395 lbs)

🛡️ Safety Features

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 Safety Features:

ABS (Anti-lock Braking System), ESP (Electronic Stability Program), ASR (Anti-Slip Regulation), Brake Assist (BAS), Tire Pressure Monitoring System (TPMS)

Passive Safety Features:

Front Airbags, Side Airbags, Head Airbags, Roll-Over Protection System (pop-up bars), Seatbelt Pretensioners, Crumple Zones

💡 Technology Features

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 Features:

Optional: Bi-Xenon Headlights with Adaptive Front-lighting System, Parking Assist (Parktronic), Cruise Control

Connectivity Options:

Optional Bluetooth for hands-free calling and audio streaming.

🔧 Maintenance

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.

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)

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.

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:

Founded on innovation and luxury, Mercedes-Benz has a long history of producing high-quality vehicles, including pioneering sports cars and roadsters.

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 Period:

2004-2011

Manufacturing Location:

Bremen, Germany

🏆 Awards & Recognition

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.