🏷️ Basic Information

Make:

Mercedes-Benz

Model:

CLK-Class

Model Codes:

C209, A209

Year:

2009

👋 Introduction

Market Position:

Premium luxury coupe/convertible segment.

Competitors:

BMW 3 Series Coupe, Audi A5, Lexus SC, Infiniti G37 Coupe.

Key Features:

Stylish design, comfortable interior, strong performance, advanced technology, and Mercedes-Benz build quality.

Manual Value:

Empowers owners and independent mechanics to perform professional-level maintenance, diagnostics, and repairs, saving time and money compared to dealership service.

Digital Format Benefits:

Single, easy-to-use PDF file, eliminating the need to handle physical manuals. Allows for selective printing and easy zooming of images.

📋 Manual Details

Coverage Areas:

All models and all repairs A-Z for the 2009 CLK-Class (C209 & A209)

Page Count:

Not specified, but described as comprehensive and exhaustive.

Manual Type:

Factory Service & Repair Manual

Language:

English

Format:

PDF

Download Speed:

Speed download.

Software Compatibility:

Windows Vista 32/64-bit, XP, ME, 98, NT, 2000, and Mac compatible.

Required Software:

Adobe PDF Reader and Winzip (free online).

📖 Manual Coverage

Systems Covered:

Maintenance, Engine, Control System, Mechanical, Fuel Service Specifications, Emission Control, Intake/Exhaust/Cooling, Lube, Ignition/Starting/Charging, Automatic Transmission, Clutch, Manual Transmission, Transfer/Propeller Shaft, Drive Shaft, Differential, Axle/Suspension, Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering, Air Conditioning, Supplemental Restraint System (SRS), Seat Belt, Engine Immobilizer, Cruise Control, Wiper & Washer, Door Lock, Meter/Audio/Visual, Horn, Windshield/Glass/Mirror, Instrument Panel, Seat, Engine Hood/Door, Exterior & Interior, Electrical, Multiplex/CAN Communication, and more.

Engine Management Systems:

Detailed coverage of engine control units (ECUs), sensors (e.g., crankshaft position, camshaft position, MAF, O2 sensors), actuators (e.g., fuel injectors, ignition coils), and diagnostic trouble codes (DTCs).

Chassis Systems:

Comprehensive data on suspension components (struts, shocks, control arms, bushings), steering systems (rack and pinion, power steering pump, steering column), and wheel/tire specifications (sizes, pressures, alignment).

Brake Systems:

Detailed information on hydraulic brake systems, ABS components (modulator, sensors), brake pad/rotor replacement, brake fluid specifications (e.g., DOT 4), and parking brake mechanisms.

Body And Interior:

Covers door mechanisms, latches, hinges, window regulators, seat adjustments, upholstery, interior trim removal, and exterior body panel alignment.

Emission Control Systems:

Coverage of catalytic converters, oxygen sensors, secondary air injection, and evaporative emission control systems.

Multiplex/Can Communication:

Detailed information on the Controller Area Network (CAN) bus system, diagnostic protocols, and troubleshooting communication issues between modules.

Procedures Included:

Complete step-by-step instructions, diagnosis, servicing, maintenance, repair, and troubleshooting for all vehicle systems.

Diagnostic Procedures:

Step-by-step diagnostic flowcharts and procedures for identifying common and complex faults across all vehicle systems.

Repair Procedures:

Detailed instructions for component removal, installation, adjustment, and replacement, including torque specifications.

Electrical Diagnostics:

Extensive wiring diagrams, electrical component locations, circuit descriptions, and troubleshooting guides for the vehicle's complex electrical system.

Technical Depth:

Vehicle-specific, factory-level detail; equivalent to what dealership technicians use. Includes diagrams, illustrations, wiring schematics, and specifications for complete repair.

Wiring Schematics:

Includes complete, high-detail wiring diagrams for all electrical systems.

Illustrations Diagrams:

Abundant step-by-step illustrations and exploded view diagrams for clarity during repairs.

📊 Manual Specifications

File Format:

PDF

Searchability:

Likely features searchable text for quick information retrieval.

Print Quality:

High-quality, printable pages with zoomable images and diagrams.

Printable Pages:

All pages are printable, allowing users to take specific sections to the workshop.

Binding Type:

Digital (PDF) - No physical binding.

Paper Type:

Not applicable (digital format).

⚙️ Engine Specifications

Engine Options:

Likely includes V6 engines such as the M272 (e.g., CLK350) and potentially V8 engines (e.g., CLK550, CLK63 AMG - although AMG models might have separate manuals or specific sections).

Typical Performance:

For CLK350: Approx. 268 hp, 258 lb-ft torque. For CLK550: Approx. 382 hp, 391 lb-ft torque.

Fuel System Type:

Electronic Fuel Injection (EFI) with advanced engine management systems.

Cooling System Type:

Pressurized liquid cooling system with an engine-driven water pump and electric cooling fan(s).

Lubrication System Type:

Wet sump lubrication system with a spin-on oil filter.

🔧 Transmission

Standard Transmission:

Likely the Mercedes-Benz 7G-TRONIC 7-speed automatic transmission for most models.

Optional Transmission:

While less common for this generation, some earlier models or specific AMG variants might have had different transmission options (e.g., 5-speed automatic, manual in very limited cases).

Transmission Features:

Adaptive shift logic, manual mode (Tiptronic/Touchshift), potentially sport and comfort modes.

📐 Dimensions

Coupe Length:

Approx. 182.2 inches (C209)

Convertible Length:

Approx. 183.0 inches (A209)

Coupe Width:

Approx. 69.7 inches (C209)

Convertible Width:

Approx. 69.7 inches (A209)

Coupe Height:

Approx. 54.5 inches (C209)

Convertible Height:

Approx. 54.6 inches (A209)

Curb Weight:

Ranging from approximately 3500 lbs to over 4000 lbs depending on engine and body style.

🛡️ Safety Features

NHTSA Ratings:

Likely achieved good ratings in government crash tests for its era. Specific ratings would need to be verified.

Active Safety Features:

Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Traction Control System (TCS), Brake Assist (BAS).

Passive Safety Features:

Multiple airbags (front, side, head curtain for coupe), seatbelt pretensioners, crumple zones.

Seatbelts:

3-point inertia-reel seatbelts with belt force limiters and pretensioners, ISOFIX child seat anchoring points.

💡 Technology Features

Infotainment System:

Likely COMAND (Cockpit Management and Navigation) system with features like navigation, radio, CD player, and optional Harman Kardon audio.

Driver Assistance Features:

Optional features could include: DISTRONIC adaptive cruise control, PARKTRONIC parking assist, bi-xenon headlights with cornering function.

Connectivity Options:

Bluetooth connectivity for hands-free calling, possibly auxiliary audio input.

Climate Control System:

THERMATIC (manual climate control) or THERMOTRONIC (automatic dual-zone climate control).

🔧 Maintenance

Typical Maintenance Intervals:

Service A and Service B intervals based on Mercedes-Benz Flexible Service System (FSS), typically around 10,000 miles or 12 months for Service A, and 20,000 miles or 24 months for Service B, though this can vary based on driving conditions and specific model. Oil changes may be recommended more frequently (e.g., every 5,000-7,500 miles).

Engine Oil Specification:

Likely MB 229.5 or MB 229.51 approved synthetic oil (e.g., 0W-40, 5W-40, or 5W-30 depending on specific engine and climate). Specific viscosity and API/ACEA ratings are critical and detailed in the manual.

Transmission Fluid Specification:

MB 236.14 for the 7G-TRONIC automatic transmission. Referencing the correct fluid is paramount for longevity.

Coolant Specification:

Mercedes-Benz approved coolant (e.g., G48 or similar silicate-containing coolant, mixed 50/50 with distilled water). Always confirm the specific OE specification.

Brake Fluid Specification:

DOT 4 Plus or DOT 4 LV (Low Viscosity) brake fluid.

Power Steering Fluid:

Typically MB 236.3 specified hydraulic fluid or a Dexron III/Mercon compatible ATF.

Common Issues And Bulletins:

Potential issues can include: balance shaft wear on M272 engines (a known issue with early models, though some may have been addressed), oil cooler seal leaks, transmission conductor plate issues (common in many Mercedes automatics), and aging electronic components. The manual would detail diagnostic procedures for these and many other potential problems.

📚 Vehicle History

Brand Heritage:

Mercedes-Benz has a long-standing reputation for luxury, engineering, and safety, dating back to the late 19th century.

Clk Class Evolution:

The C209/A209 generation (2003-2010) replaced the C208 CLK-Class and was based on the W203 C-Class platform. It offered a more modern design and technology, including the introduction of the 7G-TRONIC transmission and advanced safety features. The CLK was later succeeded by the E-Class Coupe and Cabriolet (C207/A207).

Chassis Codes:

C209 for Coupe, A209 for Cabriolet.

Production Years:

2003-2010 (for the C209/A209 generation).