🏷️ Basic Information

Make:

Mercedes-Benz

Model:

CL550

Year:

2009

Chassis Code:

C216

Engine Code:

M273

👋 Introduction

Segment:

Full-size Luxury Grand Tourer Coupe

Target Audience:

Affluent consumers seeking a blend of performance, luxury, comfort, and advanced technology.

Key Competitors:

BMW 6 Series, Audi A7 (later generations), Porsche Panamera, Lexus LS Coupe (if available).

Distinguishing Factors:

Powerful V8 engine, sophisticated ABC suspension (optional), luxurious interior, advanced safety and comfort features, iconic Mercedes-Benz styling.

📋 Manual Details

Systems Covered:

Engine mechanical, engine electrical, fuel system, emission control, transmission (automatic), drivetrain, suspension, steering, brakes, climate control, body electrical, interior, exterior, chassis, diagnostic procedures, troubleshooting, wiring diagrams.

Page Count:

Thousands of pages (typical for comprehensive factory service manuals)

Manual Type:

Official Factory Service & Repair Manual Software

Language:

English

Format:

Digital Software (likely PDF, proprietary diagnostic software access, or web-based)

📖 Manual Coverage

Engine Mechanical:

Complete disassembly, inspection, repair, and reassembly of the M273 V8 engine, including cylinder heads, valvetrain, crankshaft, connecting rods, pistons, oil pump, timing system (timing chain, tensioners, guides).

Engine Electrical:

Ignition system, starter system, alternator, battery, engine control module (ECM) functions, sensor diagnostics (crankshaft position, camshaft position, knock sensor, MAF, O2 sensors), wiring schematics.

Fuel System:

Fuel delivery, fuel pump, fuel injectors, fuel pressure regulation, fuel filter replacement, fuel tank service.

Emission Control:

Catalytic converters, oxygen sensors, evaporative emission (EVAP) system, secondary air injection system, EGR system (if applicable), diagnostic trouble codes (DTCs) related to emissions.

Transmission:

722.9 7G-TRONIC automatic transmission: hydraulic system, electronic control unit (TCU), gear selection mechanisms, torque converter, transmission fluid service, filter replacement, valve body diagnosis and repair.

Drivetrain:

Rear-wheel drive (RWD) or 4MATIC all-wheel drive (AWD) system: driveshafts, CV joints, differential service, wheel bearings.

Suspension:

Front and rear suspension components: struts, shock absorbers, control arms, ball joints, bushings, Active Body Control (ABC) system diagnosis and service (if equipped), alignment specifications.

Steering:

Power steering system, steering rack, tie rod ends, steering column, steering angle sensor calibration.

Brakes:

Hydraulic brake system, ABS (Anti-lock Braking System), ESP (Electronic Stability Program), brake pads, brake rotors, brake fluid service, caliper repair, bleeding procedures.

Climate Control:

HVAC system diagnosis and repair, refrigerant handling, A/C compressor, condenser, evaporator, blower motor, climate control unit.

Body Electrical:

Lighting systems (headlights, taillights, interior lighting), power windows, power locks, mirrors, sunroof, windshield wipers, horn, central locking system, KVM (Keyless Go module), fuse box locations and descriptions.

Interior:

Seat adjustment mechanisms, airbags, seatbelt systems, dashboard removal, interior trim panel replacement, audio system service, navigation system service.

Exterior:

Body panels removal and installation, door repair, hood and trunk operation, bumper systems, lighting units, mirrors, glass replacement.

Chassis:

Frame and body structure, corrosion protection, jacking points, towing information.

Diagnostic Procedures:

OBD-II diagnostics, use of Mercedes-Benz diagnostic tools (e.g., STAR Diagnosis/XENTRY), fault code retrieval and interpretation, live data stream analysis.

Troubleshooting:

Systematic troubleshooting guides for common and uncommon issues, symptom-based diagnostics, electrical circuit testing, mechanical component diagnosis.

Wiring Diagrams:

Comprehensive electrical wiring diagrams for all major systems, including pinouts, connector information, and component locations.

Maintenance:

Oil changes, filter replacements (oil, air, cabin, fuel), spark plug replacement, coolant flushes, brake fluid flushes, belt inspections and replacement, tire rotation and balancing.

Repair:

Engine component repair/replacement, transmission repair, suspension and steering component replacement, brake system repair, electrical component diagnosis and replacement, body panel repair and alignment.

Troubleshooting Diagnostics:

Detailed guides for diagnosing and resolving specific vehicle problems, including symptom analysis and corrective actions.

Technical Specifications:

Torque specifications for all fasteners, fluid capacities and types, electrical specifications, diagnostic parameters, emissions data.

Depth:

Comprehensive, from basic routine maintenance to full engine and transmission overhauls. Covers diagnostic procedures requiring specialized tools.

📊 Manual Specifications

File Format:

Digital Software (likely PDF or specialized .exe/.dmg)

Print Quality:

High-resolution, suitable for professional printing or on-screen viewing. Includes clear diagrams and schematics.

Binding Type:

N/A (Software format)

Paper Type:

N/A (Software format)

⚙️ Engine Specifications

Engine Type:

Naturally Aspirated V8

Displacement:

5.5 Liters (5461 cc)

Bore X Stroke:

98.0 mm x 90.5 mm

Compression Ratio:

10.7:1

Valvetrain:

SOHC (Single Overhead Camshaft) with 4 valves per cylinder, 32 valves total (M273 utilizes a relatively simple yet robust valvetrain).

Horsepower:

382 hp @ 6000 rpm

Torque:

391 lb-ft @ 2800-4500 rpm

Induction:

Multi-point fuel injection (MPI)

Fuel Type:

Premium Unleaded Gasoline

Engine Oil Type:

Mobil 1 Synthetic SAE 0W-40 (or equivalent MB-Approval 229.5 spec)

Engine Oil Capacity:

8.5 Liters (9 US Quarts)

🔧 Transmission

Transmission Type:

7-speed automatic (722.9 7G-TRONIC)

Optional Drivetrain:

4MATIC All-Wheel Drive (AWD)

Transmission Features:

Driver-adaptive shift modes (Comfort, Sport), manual shifting via steering wheel paddles, torque converter lock-up.

Transmission Fluid Type:

MB Specification 236.14 (e.g., Mobil ATF LT 71141 or equivalent)

Transmission Fluid Capacity:

Approximately 7.5 - 8.0 Liters (for complete fill, subject to torque converter).

📐 Dimensions

Length:

196.4 inches (4988 mm)

Width:

73.7 inches (1872 mm)

Height:

55.0 inches (1398 mm)

Wheelbase:

116.7 inches (2964 mm)

Curb Weight:

4450 - 4600 lbs (2018 - 2087 kg), depending on RWD/AWD and options.

Gross Vehicle Weight Rating:

Approximately 5750 lbs (2608 kg)

🛡️ Safety Features

NHTSA Front Crash Test:

Not explicitly rated by NHTSA for 2009 model year coupe, but typical for Mercedes-Benz of this era to achieve high scores.

IIHS Crash Test:

Likely 'Good' in frontal, side, and rear impact tests based on contemporary Mercedes-Benz C216 reviews and data.

Active Safety Systems:

ABS, ESP, Brake Assist (BAS), tire pressure monitoring system (TPMS), optional Distronic Plus adaptive cruise control, Lane Keeping Assist, Blind Spot Assist.

Passive Safety Features:

Multi-stage front airbags, front side airbags, rear side airbags, curtain airbags, active head restraints, front and rear crumple zones.

💡 Technology Features

Infotainment System:

COMAND (Cockpit Management and Navigation System) with a central display, CD/DVD changer, AM/FM radio, and SiriusXM satellite radio.

Navigation:

Integrated GPS navigation system.

Audio:

Harman Kardon LOGIC 7 surround sound audio system (optional or standard depending on trim/package).

Driver Assistance Features:

Optional Distronic Plus (adaptive cruise control), Parking Assist (PARKTRONIC), rearview camera, Lane Keeping Assist, Blind Spot Assist.

Connectivity Options:

Bluetooth interface for hands-free calling and audio streaming, optional SiriusXM, possibly auxiliary audio input.

Comfort Technology:

Keyless Go, multi-contour front seats with massage and heating/ventilating, ambient interior lighting, dual-zone automatic climate control.

🔧 Maintenance

Oil Change Interval:

Every 10,000 miles or 12 months, whichever comes first (based on flexible service system 'ASSYST'). Actual interval may vary based on driving conditions and oil used.

Transmission Service Interval:

Recommended every 40,000 - 60,000 miles for the 7G-TRONIC transmission, including fluid and filter replacement. Consult the manual for precise recommendations.

Coolant Service Interval:

First change at 100,000 miles, then every 50,000 miles thereafter (using Mercedes-Benz approved coolant).

Brake Fluid Service Interval:

Every 2 years, regardless of mileage.

Power Steering Fluid:

Pentosin CHF 11S or equivalent (specific to ABC system if equipped, check manual for standard power steering fluid).

Coolant Type:

Mercedes-Benz Approved Antifreeze/Coolant (e.g., G48 or equivalent, typically blue)

Brake Fluid Type:

DOT 4 Plus (or DOT 4 LV, MB-Approval 331.0)

Common Issues:

Active Body Control (ABC) hydraulic leaks or pump failures, O2 sensor failures, ignition coil failures, transmission conductor plate issues, cam adjustment solenoids, SBC (Sensotronic Brake Control) if earlier model, but CL550 (C216) uses conventional hydraulics. Oil cooler seal leaks.

📚 Vehicle History

Mercedes Benz Legacy:

Renowned for luxury, engineering prowess, innovation, and safety since its inception in the late 19th century.

Cl Class Lineage:

The CL-Class is the flagship coupe model of Mercedes-Benz, tracing its roots back to models like the W112 (300SE 'Fintail' coupe) and the iconic W107, W113 Pagoda, and later the SEC coupes (W126, C140).

C216 Generation:

The C216 generation succeeded the C215 CL-Class and was produced from 2006 to 2014. It represented a significant advancement in technology and styling for the CL-Class.

Production Period:

2006-2014 (for C216 generation)

Manufacturing Location:

Germany

🏆 Awards & Recognition

Awards And Accolades:

While specific awards for the 2009 CL550 might not be widely publicized, the CL-Class as a line has historically been recognized for its luxury, engineering, and technological advancements by automotive publications and consumer surveys.