Market Position:
The 2009 Mercedes-Benz CLS550 represented the pinnacle of automotive luxury and performance within the four-door coupe segment, blending sleek styling with potent V8 power and advanced technology. This manual serves owners and technicians seeking to maintain or repair this high-end luxury vehicle.
Competitive Analysis:
Competed against vehicles like the BMW 6 Series Gran Coupe (though CLS preceded the 4-door variant), Audi A7, and Porsche Panamera. Key selling points were its distinctive design, powerful engine, and the prestige associated with the Mercedes-Benz brand.
Key Features:
Distinctive CLS styling, powerful 5.5L V8 engine, luxurious interior appointments, advanced safety systems, and sophisticated ride and handling characteristics.
Coverage Areas:
Comprehensive service, repair, maintenance, diagnostics, and troubleshooting for all systems of the 2009 Mercedes-Benz CLS550.
Page Count:
Estimated 2000+ pages (Software)
Manual Type:
Official Service and Repair Manual Software
Format:
Digital Software (likely PDF or proprietary executable)
Systems Covered:
Engine Mechanical, Engine Electrical, Fuel System, Exhaust System, Cooling System, Lubrication System, Intake System, Ignition System, Emission Controls, Transmission (7G-TRONIC), Driveline, Suspension (ABC or standard), Steering, Brakes (ABS, ESP, SBC), Body Electrical, Lighting, Climate Control (A/C), SRS Airbags, Body Panels, Interior Trim, Infotainment System, Navigation System, Telematics, CAN Bus Communication, Diagnostic Trouble Codes (DTCs).
Procedures Included:
Routine Maintenance, Scheduled Service, Component Removal and Installation, Engine Overhaul, Transmission Repair, Suspension Overhaul, Brake System Service, Electrical Diagnostics, Wiring Diagrams, HVAC System Repair, Bodywork Repair, Interior Component Repair, Diagnostic Scan Tool Procedures, Calibration Procedures, Torque Specifications, Special Tool Requirements, Troubleshooting Guides, Fluid Specifications and Capacities, Fuse and Relay Information, Battery Service.
Technical Depth:
In-depth diagnostic procedures, detailed repair steps with specifications, troubleshooting flowcharts, complete component identification, and factory-level technical data suitable for professional technicians and advanced DIYers.
โ๏ธ 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
Valve Train:
DOHC, 4 valves per cylinder, Camshaft Adjustment
Horsepower:
382 hp @ 6000 rpm
Torque:
391 lb-ft @ 2800-4800 rpm
Fuel Delivery:
Electronic Fuel Injection (EFI) with Sequential Port Injection
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Engine Control Unit:
ME 9.7
Transmission Type:
7-Speed Automatic (7G-TRONIC)
Optional Transmission:
N/A for CLS550 in 2009
Transmission Modes:
Comfort (C) and Sport (S) modes
Drivetrain:
Rear-Wheel Drive (RWD)
Transmission Fluid Spec:
MB Approval 236.14 (e.g., Mobil ATF 134, Pentosin ATF1)
Transmission Fluid Capacity:
Approx. 9 Liters (dry fill)
Length:
193.3 inches (4909 mm)
Width:
71.2 inches (1808 mm)
Height:
55.0 inches (1397 mm)
Wheelbase:
112.4 inches (2856 mm)
Front Headroom:
37.5 inches (953 mm)
Rear Headroom:
36.3 inches (922 mm)
Front Legroom:
42.0 inches (1067 mm)
Rear Legroom:
33.1 inches (841 mm)
Trunk Capacity:
13.1 cubic feet (370 Liters)
Curb Weight:
4178 lbs (1895 kg)
Gross Vehicle Weight Rating:
5291 lbs (2400 kg)
Standard Wheel Size:
18 x 8.5 inches (front), 18 x 9.5 inches (rear)
Standard Tire Size:
245/40 R18 (front), 275/35 R18 (rear)
NHTSA Front Crash Test:
5-Star Rating (Likely, based on contemporary Mercedes-Benz models)
IIHS Crash Test:
Likely 'Good' in relevant categories (e.g., frontal offset, side impact).
Active Safety Systems:
Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Traction Control System (TCS), Brake Assist System (BAS), Tire Pressure Monitoring System (TPMS).
Passive Safety Features:
Frontal Airbags, Side Airbags, Full-Length Curtain Airbags, Active Head Restraints (Neck-Pro), Pre-Safeยฎ occupant protection system.
Headlight Type:
Bi-Xenon Headlights with Active Curve Illumination and LED Daytime Running Lights (DRLs) standard.
Infotainment System:
COMAND (Cockpit Management and Navigation System) with integrated CD/DVD player, radio, navigation, and optional SiriusXM satellite radio.
Audio System:
Harman Kardonยฎ LOGIC 7ยฎ surround sound system (optional or standard depending on trim/package).
Driver Assistance Features:
Distronic PLUS (Adaptive Cruise Control), PARKTRONIC (Parking Sensors), Lane Keeping Assist (optional).
Connectivity Options:
Bluetoothยฎ hands-free connectivity, optional Media Interface for iPod/USB connectivity.
Comfort Features:
Heated and Ventilated Front Seats, Multi-Contour Front Seats with massage function (optional), Keyless-Go (keyless entry and ignition), Power Glass Sunroof, Dual-Zone Automatic Climate Control.
Oil Change Interval:
Typically every 10,000 miles or 12 months, whichever comes first, based on the Flexible Service System (FSS).
Major Service Interval:
Service B (approx. 20,000 miles or 24 months) includes more comprehensive checks and replacements, such as cabin air filter, brake fluid flush, and spark plug inspection/replacement at later intervals.
Engine Oil Type:
SAE 0W-40 or 5W-40, MB Approval 229.5
Engine Oil Capacity:
8.5 Liters (8.9 US Quarts)
Coolant Type:
Mercedes-Benz approved Antifreeze/Coolant (e.g., ZEREX G-48 or equivalent, typically a silicate-containing, long-life coolant).
Brake Fluid Type:
DOT 4 Plus (or MB Specification 331.0)
Power Steering Fluid:
Pentosin CHF 11 S or MB Approval 236.3
Known Issues:
Air Suspension issues (struts, pump leaks, lines), SBC brake system (if equipped, though CLS550 in 2009 likely had conventional hydraulic brakes with ABS/ESP), oil leaks from valve covers or oil filter housing, spark plug well oil contamination, transmission conductor plate issues (less common on 7G-TRONIC than older units), potential Airmatic strut leaks, COMAND system glitches.
Oil Filter Part Number:
Typically Mann-Filter HU 715/1 x, Hengst E445H D412, or equivalent (confirm via VIN).
Air Filter Part Number:
Typically Mann-Filter C 34 160 or equivalent.
Brand Heritage:
Mercedes-Benz boasts a rich history dating back to the invention of the automobile, renowned for engineering excellence, luxury, and pioneering safety innovations.
Model Evolution:
The CLS-Class, introduced in 2004 (as a 2005 model), was groundbreaking for Mercedes-Benz, establishing the four-door coupe segment. The second-generation (W219) was produced from 2004 to 2010, with the 2009 model year representing the later part of this generation, featuring styling and technology updates.
Production Period:
2004-2010
Manufacturing Location:
Sindelfingen, Germany
๐ Awards & Recognition
Awards Recognitions:
The CLS-Class, in general, has received numerous accolades for design and luxury over its production run. Specific awards for the 2009 CLS550 model may include recognition for styling and performance from automotive publications. (Specific awards would require detailed historical research, but its segment positioning implies competitive recognition).
