🏷️ Basic Information

Make:

Mercedes-Benz

Model:

CLK320

Year:

2004

Chassis Code:

W209

Engine Code:

M112 E32

👋 Introduction

Market Position:

The 2004 Mercedes-Benz CLK320 (W209) represented a significant evolution in the entry-level luxury coupe/convertible segment, competing with models like the BMW 3 Series Coupe/Convertible and Audi A4 Cabriolet. It offered a blend of refined styling, robust performance, and Mercedes-Benz's renowned build quality and comfort.

Competitive Analysis:

Competed directly with the BMW E46 3 Series Coupe/Convertible and Audi 8E B6/B7 A4 Cabriolet, often differentiated by its more classic styling cues and emphasis on grand touring comfort over outright sportiness, though still capable of spirited driving.

Key Features:

Sleek coupe or retractable hardtop convertible body styles, powerful V6 engine, premium interior materials, advanced safety features for its era, and a sophisticated ride quality.

Target Audience:

Owners seeking to perform DIY maintenance, diagnostics, and repairs, as well as independent repair shops and enthusiasts who value accurate technical information.

📋 Manual Details

Coverage Areas:

Full Service, Repair, Maintenance, Diagnostics, Electrical Schematics, Bodywork, Specifications, Troubleshooting

Page Count:

Estimated 2000+ pages (comprehensive digital format)

Manual Type:

Official Service and Repair Manual Software

Language:

English

Format:

Software (Digital Download/Online Access)

License:

Officially Licensed

📖 Manual Coverage

Systems Covered:

Engine Mechanical, Engine Management (ECU), Fuel System, Ignition System, Exhaust System, Cooling System, Lubrication System, Transmission (Automatic 5G-TRONIC 722.6), Drivetrain (RWD), Suspension (Front/Rear), Steering, Brakes (ABS, ESP), Climate Control (AC/Heating), Electrical System (Body Control Module, Gateway, CAN Bus), Lighting, SRS (Airbag) System, Infotainment, Bodywork, Interior Trim, Security System

Procedures Included:

Routine Maintenance, Scheduled Maintenance, Troubleshooting Fault Codes, Engine Overhaul, Transmission Repair, Brake System Service, Suspension Component Replacement, Steering System Repair, Electrical Component Diagnosis and Replacement, Climate Control System Servicing, Body Panel Repair and Alignment, Interior Trim Removal and Installation, Diagnostic Software Interface Procedures, Wiring Harness Repair, Pre-Delivery Inspection (PDI)

Technical Depth:

Comprehensive from basic fluid changes and filter replacements to complete engine and transmission rebuilds, including in-depth electrical troubleshooting and diagnostic procedures with component-level testing.

Diagnostic Tools Coverage:

Detailed procedures and information for using Mercedes-Benz specific diagnostic tools such as STAR Diagnosis (or compatible equivalent) for fault code reading, live data analysis, and component activation.

Electrical Schematics Detail:

Includes detailed wiring diagrams for all major systems, component location charts, and troubleshooting trees for electrical faults.

Torque Specifications:

Comprehensive torque specifications for all fasteners, including engine components, chassis, and bodywork.

Bodywork Repair Coverage:

Covers panel replacement, straightening, rust repair, paint specifications, and convertible top mechanism servicing.

📊 Manual Specifications

File Format:

Proprietary software format, likely searchable PDF or interactive HTML with embedded diagrams.

Print Quality:

N/A (Digital Software)

Binding Type:

N/A (Digital Software)

Paper Type:

N/A (Digital Software)

Searchability:

Fully searchable text and indexed content for quick access to information.

Update Frequency:

N/A (Static Software)

Accessibility:

Accessible on computers with appropriate software or through web browser (depending on specific delivery method).

⚙️ Engine Specifications

Primary Engine:

3.2L (3199cc) SOHC V6 (M112 E32)

Horsepower:

215 hp @ 5700 rpm

Torque:

229 lb-ft (310 Nm) @ 3000-4500 rpm

Fuel System:

Multi-Point Fuel Injection (MPFI) with Electronic Throttle Control (ETC)

Engine Features:

Aluminum block and cylinder heads, 3 valves per cylinder, Dual Spark Plugs per cylinder, Dual Overhead Camshafts (DOHC), Variable Intake Manifold (VIM), Oil cooler.

Engine Management System:

ME 2.8 (Engine Control Unit - ECU)

Emissions Compliance:

Meets EPA Tier 2 / CARB LEV standards for its model year.

Bore X Stroke:

92.6 mm x 77.0 mm

Compression Ratio:

9.5:1

Ignition System Type:

Distributorless Electronic Ignition (EIS) with coil-on-plug design and double spark plugs.

🔧 Transmission

Standard Transmission:

5-Speed Automatic (5G-TRONIC 722.6)

Optional Transmission:

None for CLK320 in 2004

Transmission Features:

Driver-adaptive with Comfort, Sport, and Manual modes; Electronic control unit (TCU); Lock-up torque converter.

Transmission Fluid Type:

MB Approved ATF (e.g., Shell ATF 134 or equivalent)

Transmission Fluid Capacity:

Approximately 8 Liters (dry fill) / 6.5 Liters (service fill)

Transmission Gear Ratios:

1st: 3.59, 2nd: 2.19, 3rd: 1.42, 4th: 1.00, 5th: 0.73, Reverse: 3.42

📐 Dimensions

Wheelbase:

106.9 inches (2715 mm)

Overall Length:

181.0 inches (4598 mm)

Overall Width:

68.9 inches (1750 mm)

Overall Height:

54.6 inches (1387 mm)

Curb Weight:

Approx. 3500 - 3700 lbs (1588 - 1678 kg)

Gross Vehicle Weight Rating:

Approx. 4500 lbs (2041 kg)

Towing Capacity:

Not specified/designed for towing.

Front Headroom:

Approx. 37.4 inches (950 mm)

Front Legroom:

Approx. 41.7 inches (1059 mm)

Rear Headroom:

Approx. 34.8 inches (884 mm)

Rear Legroom:

Approx. 26.6 inches (676 mm)

Cargo Volume Coupe:

Approx. 12.4 cubic feet (351 Liters)

Cargo Volume Convertible:

Approx. 8.8 cubic feet (249 Liters) with roof up

🛡️ Safety Features

NHTSA Front Crash Rating:

5 Stars

NHTSA Side Crash Rating:

4 Stars (driver) / 5 Stars (passenger)

Active Safety Features:

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

Active Safety Features Detail:

ESP system can intervene by braking individual wheels and reducing engine power to maintain directional stability during slippery conditions or evasive maneuvers.

Passive Safety Features:

Front dual-stage airbags, Side-impact airbags (front), Window airbags (front), Seatbelt pre-tensioners, Anti-whiplash head restraints, Crumple zones.

Number Of Airbags:

6 (Front, Front Side, Front Windowbags)

Seatbelt Features:

3-point inertia-reel seatbelts with belt force limiters and automatic pretensioners for all occupants.

💡 Technology Features

Infotainment System:

COMAND (Cockpit Management and Navigation) system with CD player, optional navigation, and radio. Basic audio systems also available.

Driver Assistance Features:

Optional Parktronic parking assist, rain-sensing wipers, auto-dimming rearview mirror.

Connectivity Features:

Optional Bluetooth hands-free communication system (TeleAid).

Chassis Features:

Front: Independent multi-link suspension; Rear: Independent multi-link suspension. Hydraulic power-assisted steering.

Lighting Features:

Halogen headlamps with optional Bi-Xenon HID lighting, automatic headlamp activation.

🔧 Maintenance

Service Interval Oil Change:

Flexible: Based on 'Service A' and 'Service B' indicators, typically every 10,000 miles or 1 year, whichever comes first, depending on driving conditions.

Service Interval Major Service:

Every 30,000 miles or 3 years (Service B): Includes spark plugs, cabin filter, fuel filter (if applicable), transmission service, coolant flush, brake fluid replacement. Consult specific model maintenance schedule for precise intervals.

Engine Oil Type:

MB 229.5 Specification (e.g., Mobil 1 0W-40, Castrol Syntec 0W-40)

Engine Oil Capacity:

Approx. 8.0 Liters (1.76 Gallons) with filter change.

Coolant Type:

MB 325.0 / 326.0 Specification (Antifreeze/Coolant concentrate, e.g., Mercedes-Benz/Pentofrost E)

Brake Fluid Type:

DOT 4 Plus (MB 331.0 Specification)

Power Steering Fluid Type:

MB Approved Power Steering Fluid (typically Pentosin CHF 11S or equivalent)

Coolant Capacity:

Approx. 8.0 Liters (1.76 Gallons)

Common Issues:

Mass Air Flow (MAF) sensor issues, ignition coil failures, ABS/ESP sensor failures, window regulator problems, early transmission conductor plate issues, coolant leaks from plastic components (e.g., thermostat housing), crank position sensor failure.

Common Issues Detail:

Some models may experience camshaft adjuster (camphaser) noise, requiring replacement of seals or the adjuster itself. Water pump seals are also a potential leak point.

Oil Filter Part Number:

e.g., Mann-Filter HU 718/5 x, Mahle KL 147/1

Air Filter Part Number:

e.g., Mann-Filter C 30 117/1, Mahle LX 1040

Cabin Filter Part Number:

e.g., Mann-Filter CU 29 005

📚 Vehicle History

Brand Heritage:

Mercedes-Benz boasts a long and storied history of automotive innovation, luxury, and engineering excellence, dating back to the invention of the automobile itself by Karl Benz in 1886. The brand is synonymous with quality, safety, and performance.

Model Evolution:

The W209 CLK generation succeeded the W208 and was based on the W203 C-Class platform, offering a more substantial and refined experience. It maintained the elegant coupe and convertible styling that defined the CLK nameplate. The 2004 model year represents the early production phase of the W209, featuring the then-current Mercedes-Benz design language and technology.

Production Period:

W209 generation produced from 2002 to 2009.

Platform:

Based on the W203 C-Class platform, but with a longer wheelbase and unique body structure.

Body Styles:

Coupé (C209) and Cabriolet (A209) with retractable hardtop.

🏆 Awards & Recognition

Recognitions:

While specific awards for the 2004 CLK320 are not widely publicized, the W209 generation received general acclaim for its styling and luxury, contributing to Mercedes-Benz's consistent ranking among top luxury brands.