🏷️ Basic Information

Make:

Mercedes-Benz

Model:

C350

Year:

2011

Chassis Code:

W204

👋 Introduction

Market Position:

The 2011 Mercedes-Benz C350 (W204 generation) represents the entry-level luxury sedan segment, competing with vehicles like the BMW 3 Series, Audi A4, and Lexus IS. It is positioned as a balance of sporty driving dynamics, sophisticated comfort, and Mercedes-Benz's renowned engineering and safety.

Competitive Analysis:

The C350 offered a potent V6 engine, making it a strong contender for those seeking performance beyond the base C250 model. Its advanced safety features, premium interior materials, and solid build quality were key selling points against its German and Japanese rivals.

Key Features:

Powerful V6 engine, rear-wheel drive (optional 4MATIC all-wheel drive), sophisticated interior, advanced safety suite, comfortable ride, and high-quality construction.

Chassis Platform:

Built on the W204 platform, known for its robust engineering and dynamic handling characteristics.

📋 Manual Details

Coverage Areas:

North America, Europe, Asia

Page Count:

Approximately 2500+ pages (estimated for comprehensive software)

Manual Type:

Official Service and Repair Manual Software

Language:

English

Format:

Software (likely PDF or proprietary interactive application)

📖 Manual Coverage

Systems Covered:

Engine, Powertrain, Transmission (7G-TRONIC PLUS), Drivetrain, Suspension, Steering, Brakes (ABS, ESP), Climate Control (THERMATIC/THERMOTRONIC), Electrical System (ECU, CAN Bus, Lighting), Body & Chassis, Interior Systems, Safety Systems (SRS Airbags), Diagnostic Procedures, Fuel System, Cooling System, Exhaust System, Infotainment System

Procedures Included:

Routine Maintenance, Scheduled Servicing, Troubleshooting Guides, Diagnostic Trouble Codes (DTCs), Repair Procedures, Component Replacement, Overhaul Procedures, Electrical System Diagnostics, Wiring Diagrams, Special Tool Requirements, Torque Specifications, Fluid Capacities and Specifications, Software Updates and Programming

Technical Depth:

Comprehensive, ranging from basic maintenance tasks to advanced diagnostics and complete mechanical/electrical system overhauls, including detailed component-level repair and calibration procedures.

Bodywork Coverage:

Exterior body panel removal/installation, door mechanisms, hood and trunk lid operations, mirror replacement, glass replacement, body repair techniques, corrosion protection.

Interior Coverage:

Dashboard removal, seat adjustment/removal, headliner, door panels, center console, trim pieces, carpet, and related electrical components.

Electrical System Coverage:

Detailed wiring diagrams for all major systems, fuse box locations and diagrams, battery and charging system diagnostics, starter motor, alternator, lighting circuits, power windows, seats, mirrors, and sensor troubleshooting.

📊 Manual Specifications

File Format:

Software (likely a self-extracting executable or a package compatible with common operating systems, often PDF with advanced search capabilities)

Print Quality:

N/A (Digital Software) - High-resolution diagrams and text for on-screen viewing and printing.

Binding Type:

N/A (Digital Software)

Paper Type:

N/A (Digital Software)

Manual Completeness:

Full, official factory service and repair manual, covering all aspects of vehicle maintenance and repair.

Searchability:

Software format typically offers advanced search functionality for quick access to specific topics, procedures, and diagnostic codes.

⚙️ Engine Specifications

Engine Type:

3.5L V6 (M272 KE35)

Displacement:

3498 cc

Horsepower:

268 hp @ 6000 rpm

Torque:

258 lb-ft @ 2400-5000 rpm

Fuel Delivery:

Electronic Fuel Injection (Bosch Motronic ME 2.1 or similar)

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended)

Engine Control Unit Type:

Siemens or Bosch ECU

Ignition Type:

Electronic ignition with coil-on-plug (COP) system.

Cooling System Type:

Pressurized liquid cooling system with electric fan.

🔧 Transmission

Transmission Type:

7-Speed Automatic (7G-TRONIC PLUS, 722.9)

Drivetrain Options:

4MATIC All-Wheel Drive

Transmission Features:

Tiptronic (manual shifting via steering wheel paddle or shifter), Comfort, Sport, and Manual modes.

Gear Ratios:

1st: 4.376, 2nd: 2.850, 3rd: 1.925, 4th: 1.367, 5th: 1.000, 6th: 0.820, 7th: 0.728, Reverse: 3.417 (722.9 transmission)

📐 Dimensions

Length:

181.4 inches

Width:

69.3 inches

Height:

56.3 inches

Wheelbase:

108.7 inches

Ground Clearance:

Approximately 5.5 inches (standard suspension)

Curb Weight:

3571 - 3770 lbs (depending on drivetrain)

Gross Vehicle Weight Rating:

4575 lbs (estimated)

Towing Capacity:

Not typically specified or recommended for this model.

🛡️ Safety Features

NHTSA Front Crash Rating:

5-Star

IIHS Top Safety Pick:

Yes

Active Safety Features:

Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Traction Control System (TCS), Brake Assist (BAS), Tire Pressure Monitoring System (TPMS)

Adaptive Headlights:

Optional Bi-Xenon headlamps with active curve lighting.

Passive Safety Features:

Driver and front passenger airbags, front side-impact airbags, front and rear side curtain airbags, active front head restraints, front seatbelt pre-tensioners.

💡 Technology Features

Infotainment System:

COMAND (Cockpit Management and Navigation) system with a 7-inch display, optional navigation, CD/DVD changer, Bluetooth connectivity, and auxiliary audio input.

Audio System:

Standard 8-speaker audio system, optional Harman Kardon surround sound system.

Driver Assistance Features:

Optional packages included Distronic PLUS (adaptive cruise control), Blind Spot Assist, Lane Keeping Assist, Parking Assist (PARKTRONIC).

Parking Assistance:

PARKTRONIC parking sensors (front and rear), optional rearview camera.

Connectivity Options:

Bluetooth hands-free calling and audio streaming. Optional SiriusXM Satellite Radio. Optional iPod integration kit.

Convenience Features:

Keyless-Go ignition, power-adjustable seats with memory, dual-zone automatic climate control, rain-sensing wipers, automatic headlights.

🔧 Maintenance

Scheduled Maintenance Interval Asyst:

Service A: Approximately every 10,000 miles or 12 months (whichever comes first). Service B: Approximately every 20,000 miles or 24 months (whichever comes first). Exact intervals are indicated by the vehicle's ASSYST (Active Service System).

Engine Oil Specification:

MB 229.5 or MB 229.51 (SAE 0W-40 or 5W-40 Full Synthetic is recommended)

Transmission Fluid Specification:

MB 236.14 (for 7G-TRONIC PLUS)

Coolant Specification:

MB 325.0 / 326.0 (Glysantin G05 or equivalent, blue/green)

Brake Fluid Specification:

DOT 4 Plus (MB 331.0)

Common Issues Engine:

M272 engine (pre-facelift) known for potential intake manifold flap issues and balance shaft wear. Oil leaks from valve cover gaskets. Spark plug and ignition coil replacement. Crankshaft position sensor failure.

Common Issues Transmission:

7G-TRONIC transmission can sometimes exhibit harsh shifting or solenoid issues. Mechatronics unit issues can occur. Transmission fluid and filter service is crucial.

Common Issues Suspension Steering:

Worn control arm bushings, ball joints. Power steering pump leaks (if hydraulic). Suspension components are generally robust but subject to wear over time.

Common Issues Electrical:

Various sensor failures (e.g., MAF, O2 sensors). COMAND system glitches. Seat occupancy sensor issues. Battery drain problems if not properly maintained.

Common Issues Brakes:

Worn brake pads and rotors. Premature wear of front brake pads on some models. ABS sensor failures can affect ESP and ABS operation.

Engine Oil Capacity:

Approximately 6.9 US quarts (6.5 liters) with filter change.

Transmission Fluid Capacity:

Approximately 9.0 US quarts (8.5 liters) for a full fluid exchange (722.9 transmission).

Coolant Capacity:

Approximately 8.5 US quarts (8.0 liters)

Air Filter Part Number:

Example: A2720900201 (subject to change, verify with VIN)

Cabin Filter Part Number:

Example: A2048300118 (HEPA option may differ)

Spark Plug Part Number:

Example: Y72240-650213 (NGK Iridium, typically OE replacement)

📚 Vehicle History

Brand Heritage:

Mercedes-Benz, founded in 1926, is renowned for its luxury vehicles, pioneering safety innovations, and engineering excellence. The brand has a long history of producing high-quality sedans and performance-oriented vehicles.

Model Evolution:

The W204 C-Class generation, introduced in 2007, represented a significant departure with a more aggressive and angular design compared to its predecessor. The 2011 model year received a mid-cycle refresh (facelift), introducing updated styling, revised interior materials, and improved technology features.

Facelift Details 2011:

Updated front and rear bumper designs, revised grille, LED daytime running lights, updated interior trim and materials, new steering wheel, revised COMAND system interface.

Production Years:

2007-2014 (W204 generation)

Manufacturing Locations:

Germany (Sindelfingen, Bremen), South Africa (East London), USA (Tuscaloosa - C-Class production moved later)

🏆 Awards & Recognition

IIHS Awards:

IIHS Top Safety Pick in multiple years for this generation.

Consumer Reports Ratings:

Generally rated well for reliability by consumer organizations, though specific model years and components may have variations.

Certifications:

Certified to meet stringent Mercedes-Benz quality and safety standards.