🏷️ Basic Information

Make:

Mercedes-Benz

Model:

CL55 AMG

Year:

2004

Chassis Code:

C215

Engine Code:

M113.986 (AMG Supercharged)

👋 Introduction

Segment:

Luxury Grand Tourer (GT) coupe, high-performance variant.

Target Audience:

Enthusiasts and owners seeking in-depth knowledge for maintenance, repair, and optimization of their CL55 AMG.

Competitors:

BMW 8 Series (E31), Porsche 911, Aston Martin DB7, Jaguar XK.

Vehicle Philosophy:

Combines luxurious comfort and advanced technology with potent AMG performance.

Manual Value Proposition:

Provides official, authoritative technical data essential for maintaining the complex systems of the CL55 AMG.

📋 Manual Details

Systems Covered:

Engine, Transmission, Drivetrain, Suspension, Brakes, Steering, Electrical System, Climate Control, Bodywork, Interior, Safety Systems, Diagnostics, Maintenance, Troubleshooting, Repair Procedures, Specifications, Wiring Diagrams.

Page Count:

Extensive (typically 1000+ pages for comprehensive official manuals)

Manual Type:

Official Service and Repair Manual Software

Language:

English

Format:

Software (Digital, likely PDF or proprietary software)

📖 Manual Coverage

Engine Mechanical:

Detailed breakdown of the M113.986 V8 Supercharged engine, including cylinder heads, valvetrain, crankshaft, pistons, connecting rods, lubrication system, cooling system, supercharger system, and component torque specifications.

Engine Management:

Engine control unit (ECU) functions, fuel injection system, ignition system, emissions control systems (OBD-II diagnostics), sensor data, and troubleshooting of engine performance issues.

Transmission:

5-speed automatic transmission (722.6 variant), including hydraulic control, torque converter, valve body, electronic control module (TCM), fluid specifications, and repair procedures.

Drivetrain:

Rear-wheel drive system, differential, driveshafts, axle components, and troubleshooting of drivetrain noises or performance issues.

Suspension And Steering:

Active Body Control (ABC) suspension system, hydraulic components, ride height control, shock absorbers, control arms, bushings, power steering system, steering rack, and alignment specifications.

Brakes:

High-performance braking system, including ABS (Anti-lock Braking System), ESP (Electronic Stability Program), brake calipers, rotors, brake lines, brake fluid specifications, and bleeding procedures.

Electrical System:

Comprehensive electrical schematics, wiring diagrams, fuse box locations, relay assignments, battery, alternator, starter motor, lighting systems, power windows, mirrors, seats, and interior electronics.

Climate Control:

Automatic climate control (THERMOTRONIC), refrigerant type, AC compressor, HVAC system components, and troubleshooting procedures.

Bodywork And Interior:

Body panel removal and installation, door mechanisms, hood, trunk lid, interior trim panels, seat adjustments, airbag system precautions, and corrosion protection.

Diagnostics:

Diagnostic Trouble Codes (DTCs), use of diagnostic scan tools (e.g., STAR Diagnosis), component testing procedures, and symptom-based troubleshooting guides.

Routine Maintenance:

Oil and filter changes, air filter replacement, spark plug replacement, coolant flushes, brake fluid replacement, fuel filter replacement, and accessory belt inspection/replacement.

Major Repairs:

Engine rebuilds, transmission overhauls, suspension component replacement (including ABC system), brake system repairs, and electrical system troubleshooting.

Troubleshooting Guides:

Systematic approaches to diagnosing and resolving common and complex vehicle issues, often presented in a 'symptom-to-cause' format.

Component Replacement:

Step-by-step instructions for replacing individual components, from basic parts like light bulbs to complex assemblies like alternators or AC compressors.

Wiring Diagrams:

Detailed, system-specific wiring diagrams for all major electrical systems, enabling accurate diagnosis and repair of electrical faults.

Depth Of Information:

Highly detailed, covering complete disassembly, reassembly, calibration, and diagnostic procedures for all major vehicle systems. Suitable for professional technicians and advanced DIY enthusiasts.

📊 Manual Specifications

File Format:

Likely PDF or a dedicated software application with searchable content and integrated diagrams.

Print Quality:

N/A (Digital format, but designed for clear on-screen viewing and potential printing of specific sections).

Binding Type:

N/A (Digital format).

Paper Type:

N/A (Digital format).

⚙️ Engine Specifications

Engine Type:

V8 Supercharged SOHC

Displacement:

5.4 Liters (5439 cc)

Horsepower:

493 hp @ 6100 rpm

Torque:

516 lb-ft (700 Nm) @ 2650-4500 rpm

Fuel Delivery:

Sequential multi-point fuel injection (Bosch Motronic ME2.8)

Recommended Fuel:

Premium Unleaded (91+ octane)

Coolant Type:

Mercedes-Benz MB 325.0 (Glysantin G05 or equivalent)

Oil Type:

Mobil 1 Formula M 0W-40 (or Mercedes-Benz approved equivalent)

Oil Capacity:

8.5 Liters (9 US Quarts)

🔧 Transmission

Transmission Type:

5-speed automatic (722.6)

Optional Transmission:

None for CL55 AMG

Transmission Features:

Touchshift manual shifting, Comfort/Sport modes, electronically controlled.

Transmission Fluid Type:

Mercedes-Benz ATF 236.10 or 236.12

Transmission Fluid Capacity:

Approximately 8 Liters (for torque converter and cooler, subject to drain and refill)

📐 Dimensions

Length:

197.4 inches (5014 mm)

Width:

72.5 inches (1841 mm)

Height:

55.6 inches (1412 mm)

Curb Weight:

4475 lbs (2030 kg)

Gross Vehicle Weight Rating:

5512 lbs (2500 kg)

Trunk Capacity:

15.3 cu ft (433 Liters)

🛡️ Safety Features

NHTSA Front Impact:

Not explicitly rated separately by NHTSA for this specific model year/variant, but built to rigorous Mercedes-Benz safety standards.

IIHS Side Impact:

Not explicitly rated separately by IIHS for this specific model year/variant, but built to rigorous Mercedes-Benz safety standards.

ABS:

Standard

Esp:

Standard

Traction Control:

Standard (ASR - Acceleration Slip Regulation)

Airbags:

Dual front airbags, side airbags, curtain airbags (likely).

Seatbelts:

3-point inertia-reel seatbelts with front belt tensioners and force limiters, rear seatbelts.

💡 Technology Features

Infotainment System:

COMAND (Cockpit Management and Navigation).

Audio System:

Bose premium audio system (likely).

Adaptive Cruise Control:

DISTRONIC (optional)

Parking Assistance:

Front and rear parktronic sensors.

Bluetooth:

Likely integrated or available as an accessory for hands-free calling.

Seats:

Multi-contour, heated, ventilated, and dynamic active front seats with memory.

🔧 Maintenance

Oil Change Interval:

10,000 miles or 12 months, whichever comes first (based on 'Service A' or 'Service B' indicators via ASSYST system).

Transmission Service Interval:

Typically 40,000-60,000 miles, or as indicated by the ASSYST system for transmission fluid and filter change.

Coolant Flush Interval:

Every 30,000 miles or 3 years for optimal performance and corrosion protection.

Brake Fluid Type:

DOT 4 Plus (or equivalent MB Spec 331.0)

Power Steering Fluid Type:

Mercedes-Benz Hydraulic Fluid (Pentosin CHF 11S or equivalent)

Common Issues Highlight:

ABC suspension leaks (struts, lines, pump), ignition coil failures, mass airflow sensor (MAF) issues, transmission conductor plate failure, blower motor resistor failure, catalytic converter issues.

Maintenance Importance:

Due to the complex nature of the AMG V8 and ABC suspension, regular and diligent maintenance is crucial for reliability and longevity.

📚 Vehicle History

Brand History:

Mercedes-Benz has a long-standing reputation for engineering excellence, luxury, safety, and performance since its inception.

Cl Class Heritage:

The CL-Class evolved from the S-Class Coupe, offering a sportier, more personal luxury experience while retaining S-Class underpinnings.

C215 Generation:

The C215 CL-Class generation (1999-2006) introduced advanced technologies like Active Body Control (ABC) and a refined interior. The CL55 AMG represents the pinnacle of performance for this generation.

Manufacturing Location:

Sindelfingen, Germany

Production Years:

C215 generation: 1999-2006. CL55 AMG specific: 2001-2006 (facelift introduced supercharger).

🏆 Awards & Recognition

Performance Awards:

While specific awards for the 2004 CL55 AMG are not broadly cataloged like mass-market vehicles, its AMG-tuned V8 engine and advanced chassis were highly praised by automotive journalists for their potent combination of power and refinement.

General Reputation:

Considered a benchmark for high-performance luxury coupes of its era, offering exceptional straight-line speed and sophisticated cruising capabilities.