2007 Mercedes C-Class (W203) Service and Repair Manual

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🏷️ Basic Information Identification Make: Mercedes-Benz Model: C-Class Model Code: W203 Model Year: 2007 Generation Generation Designation: Second Generation (W203) Generation Years: 2000-2007 Codes Chassis Code: W203 👋 Introduction Market Position Segment: Compact Executive Sedan/Coupe/Wagon Brand Perception: Represents Mercedes-Benz's entry-level luxury vehicle, known for comfort, build quality, and advanced technology. Competitive Analysis Key Competitors: BMW 3 Series (E46/E90), Audi A4 (B6/B7), Lexus IS (XE10/XE20), Infiniti G35 (V35). Key Features Design Philosophy: Sporty yet elegant design, high-quality interior materials, sophisticated ride and handling. Technological Advancements: Introduction of advanced electronic systems, improved safety features, and refined powertrains compared to previous generations. 📋 Manual Details Coverage Areas Coverage Scope: All Models & All Repairs A-Z Specificity: Vehicle Specific (Not Generic) Target Audience: Dealership Technicians Page Count Estimated Page Count: 2000+ pages (comprehensive, typical for factory service manuals) Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital (likely PDF, implied by common sales for such manuals) 📖 Manual Coverage Systems Covered Engine: Comprehensive coverage of all gasoline and diesel engine variants for 2007 W203, including diagnostics, overhaul, and performance tuning. Transmission: Detailed procedures for automatic (e.g., 722.6, 722.7, 722.9) and manual transmissions, including clutch, torque converter, and control module diagnostics. Brakes: ABS, ESP, SBC (if applicable to specific 2007 models), hydraulic system, brake pad/rotor replacement, bleeding procedures, parking brake. Suspension Steering: Front and rear suspension components (struts, shocks, control arms, sway bars), power steering system, alignment specifications. Electrical Electronics: Wiring diagrams, fuse box locations, component testing, ECU diagnostics, Body Control Module (BCM), CAN bus communication, lighting, power accessories. Climate Control: HVAC system operation, refrigerant handling, component replacement (compressor, evaporator, heater core), climate control module diagnostics. Fuel System: Fuel pump, injectors, fuel pressure regulator, evaporative emissions (EVAP) system, fuel tank diagnostics. Exhaust System: Catalytic converter, muffler, exhaust manifold, oxygen sensors (lambda sensors), emissions control systems. Bodywork: Panel removal and installation, door mechanisms, glass replacement, body repair specifications, paint codes. Safety Restraints: Airbag system diagnostics and replacement, seat belt mechanisms, SRS module. Procedures Included Maintenance: Scheduled maintenance (oil changes, filter replacements, fluid flushes), inspections, lubrication. Troubleshooting: Systematic diagnostic procedures for common and uncommon issues, fault code interpretation, symptom-based troubleshooting. Repair Overhaul: Step-by-step instructions for component removal, installation, and rebuilding of major systems (engine, transmission, brakes, etc.). Diagnostics: Detailed diagnostic strategies, use of Mercedes-Benz diagnostic tools (e.g., Star Diagnosis/XENTRY), sensor data analysis. Specifications: Torque specifications, clearances, fluid capacities, electrical component resistance values, pressure readings. Technical Depth Depth Level: Comprehensive: Covers everything from basic fluid checks to complete engine and transmission rebuilds, including advanced electronic diagnostics and component-level repair. 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format) - commonly used for distributing scanned or digitized service manuals, often searchable. Print Quality Scanned Quality: High-resolution scans ensuring legibility of diagrams, text, and images. Binding Type Original Binding: Typically a durable hardcover or spiral-bound format for factory original manuals, allowing for easy page turning during work. Paper Type Original Paper: High-quality, durable paper stock designed to withstand shop environments. ⚙️ Engine Specifications Primary Engine Common Gasoline Engines: M271 (1.8L Supercharged I4), M111 (2.0L Supercharged I4), M272 (2.5L/3.0L V6), M112 (2.4L/2.6L/3.2L V6). Common Gasoline Engines Details M271 Power: Approx. 163-184 hp (depending on variant) M272 Torque: Approx. 184-210 lb-ft (depending on variant) Common Diesel Engines Diesel Variants: OM646 (2.2L I4 CDI), OM647 (2.7L I5 CDI), OM648 (3.2L I6 CDI). Performance Engine Options: Range from efficient four-cylinder engines to powerful V6 and inline-six diesel units, including AMG variants. Fuel System Gasoline Injection: Sequential Multi-Port Fuel Injection (MPI) or Direct Injection (DI) depending on engine. Diesel Injection: Common Rail Diesel Injection (CDI) with advanced electronic control. 🔧 Transmission Standard Standard Transmission: 6-speed Manual (less common in US market) or 5-speed Automatic (722.6). Optional Optional Transmission: 7-speed Automatic (722.9 '7G-TRONIC') introduced later in the W203 lifecycle for some models. Features Automatic Features: Tiptronic shift control, Comfort/Sport modes, electronic gear selection. Fluid Specifications Automatic Transmission Fluid: MB-Approval 236.10 or 236.12 (e.g., Mobil ATF 134, Pentosin ATF 134) for 722.6 and 722.9 transmissions. Crucial for longevity. 📐 Dimensions Exterior Body Styles: Sedan (W203), Coupe (CL203 Sports Coupe), Wagon (S203 T-Model). Wheelbase: Approx. 2715 mm (106.9 inches) for Sedan/Wagon, 2708 mm (106.6 inches) for Coupe. Track Width Front: Approx. 1470-1490 mm (57.9-58.7 inches) Track Width Rear: Approx. 1450-1470 mm (57.1-57.9 inches) Cargo Trunk Volume Sedan: Approx. 455 liters (16.1 cu ft) Trunk Volume Wagon: Approx. 470 liters (16.6 cu ft) with rear seats up, expandable to 1520 liters (53.7 cu ft) with seats folded. Weights Curb Weight: Ranges from approx. 1450 kg (3197 lbs) for base models to over 1700 kg (3748 lbs) for diesel/V6 variants. 🛡️ Safety Features Ratings NHTSA Ratings 2007: Likely received 4 or 5-star ratings in front and side impact tests, consistent with Mercedes-Benz safety standards for the era. IIHS Ratings: Good ratings in front and...

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Sku: 183237

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Labels: 2007 C-Class (W203) Car Cars Mercedes Misc

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Description

🏷️ Basic Information

Identification

Make:

Mercedes-Benz

Model:

C-Class

Model Code:

Model Year:

Generation

Generation Designation:

Second Generation (W203)

Generation Years:

2000-2007

Codes

Chassis Code:

👋 Introduction

Market Position

Segment:

Compact Executive Sedan/Coupe/Wagon

Brand Perception:

Represents Mercedes-Benz's entry-level luxury vehicle, known for comfort, build quality, and advanced technology.

Competitive Analysis

Key Competitors:

BMW 3 Series (E46/E90), Audi A4 (B6/B7), Lexus IS (XE10/XE20), Infiniti G35 (V35).

Key Features

Design Philosophy:

Sporty yet elegant design, high-quality interior materials, sophisticated ride and handling.

Technological Advancements:

Introduction of advanced electronic systems, improved safety features, and refined powertrains compared to previous generations.

📋 Manual Details

Coverage Areas

Coverage Scope:

All Models & All Repairs A-Z

Specificity:

Vehicle Specific (Not Generic)

Target Audience:

Dealership Technicians

Page Count

Estimated Page Count:

2000+ pages (comprehensive, typical for factory service manuals)

Manual Type

Type:

Service and Repair Manual

Language

Language:

English

Format

Format:

Digital (likely PDF, implied by common sales for such manuals)

📖 Manual Coverage

Systems Covered

Engine:

Comprehensive coverage of all gasoline and diesel engine variants for 2007 W203, including diagnostics, overhaul, and performance tuning.

Transmission:

Detailed procedures for automatic (e.g., 722.6, 722.7, 722.9) and manual transmissions, including clutch, torque converter, and control module diagnostics.

Brakes:

ABS, ESP, SBC (if applicable to specific 2007 models), hydraulic system, brake pad/rotor replacement, bleeding procedures, parking brake.

Suspension Steering:

Front and rear suspension components (struts, shocks, control arms, sway bars), power steering system, alignment specifications.

Electrical Electronics:

Wiring diagrams, fuse box locations, component testing, ECU diagnostics, Body Control Module (BCM), CAN bus communication, lighting, power accessories.

Climate Control:

HVAC system operation, refrigerant handling, component replacement (compressor, evaporator, heater core), climate control module diagnostics.

Fuel System:

Fuel pump, injectors, fuel pressure regulator, evaporative emissions (EVAP) system, fuel tank diagnostics.

Exhaust System:

Catalytic converter, muffler, exhaust manifold, oxygen sensors (lambda sensors), emissions control systems.

Bodywork:

Panel removal and installation, door mechanisms, glass replacement, body repair specifications, paint codes.

Safety Restraints:

Airbag system diagnostics and replacement, seat belt mechanisms, SRS module.

Procedures Included

Maintenance:

Scheduled maintenance (oil changes, filter replacements, fluid flushes), inspections, lubrication.

Troubleshooting:

Systematic diagnostic procedures for common and uncommon issues, fault code interpretation, symptom-based troubleshooting.

Repair Overhaul:

Step-by-step instructions for component removal, installation, and rebuilding of major systems (engine, transmission, brakes, etc.).

Diagnostics:

Detailed diagnostic strategies, use of Mercedes-Benz diagnostic tools (e.g., Star Diagnosis/XENTRY), sensor data analysis.

Specifications:

Torque specifications, clearances, fluid capacities, electrical component resistance values, pressure readings.

Technical Depth

Depth Level:

Comprehensive: Covers everything from basic fluid checks to complete engine and transmission rebuilds, including advanced electronic diagnostics and component-level repair.

📊 Manual Specifications

File Format

Digital Format:

PDF (Portable Document Format) - commonly used for distributing scanned or digitized service manuals, often searchable.

Print Quality

Scanned Quality:

High-resolution scans ensuring legibility of diagrams, text, and images.

Binding Type

Original Binding:

Typically a durable hardcover or spiral-bound format for factory original manuals, allowing for easy page turning during work.

Paper Type

Original Paper:

High-quality, durable paper stock designed to withstand shop environments.

⚙️ Engine Specifications

Primary Engine

Common Gasoline Engines:

M271 (1.8L Supercharged I4), M111 (2.0L Supercharged I4), M272 (2.5L/3.0L V6), M112 (2.4L/2.6L/3.2L V6).

Common Gasoline Engines Details

M271 Power:

Approx. 163-184 hp (depending on variant)

M272 Torque:

Approx. 184-210 lb-ft (depending on variant)

Common Diesel Engines

Diesel Variants:

OM646 (2.2L I4 CDI), OM647 (2.7L I5 CDI), OM648 (3.2L I6 CDI).

Performance

Engine Options:

Range from efficient four-cylinder engines to powerful V6 and inline-six diesel units, including AMG variants.

Fuel System

Gasoline Injection:

Sequential Multi-Port Fuel Injection (MPI) or Direct Injection (DI) depending on engine.

Diesel Injection:

Common Rail Diesel Injection (CDI) with advanced electronic control.

🔧 Transmission

Standard

Standard Transmission:

6-speed Manual (less common in US market) or 5-speed Automatic (722.6).

Optional

Optional Transmission:

7-speed Automatic (722.9 '7G-TRONIC') introduced later in the W203 lifecycle for some models.

Features

Automatic Features:

Tiptronic shift control, Comfort/Sport modes, electronic gear selection.

Fluid Specifications

Automatic Transmission Fluid:

MB-Approval 236.10 or 236.12 (e.g., Mobil ATF 134, Pentosin ATF 134) for 722.6 and 722.9 transmissions. Crucial for longevity.

📐 Dimensions

Exterior

Body Styles:

Sedan (W203), Coupe (CL203 Sports Coupe), Wagon (S203 T-Model).

Wheelbase:

Approx. 2715 mm (106.9 inches) for Sedan/Wagon, 2708 mm (106.6 inches) for Coupe.

Track Width Front:

Approx. 1470-1490 mm (57.9-58.7 inches)

Track Width Rear:

Approx. 1450-1470 mm (57.1-57.9 inches)

Cargo

Trunk Volume Sedan:

Approx. 455 liters (16.1 cu ft)

Trunk Volume Wagon:

Approx. 470 liters (16.6 cu ft) with rear seats up, expandable to 1520 liters (53.7 cu ft) with seats folded.

Weights

Curb Weight:

Ranges from approx. 1450 kg (3197 lbs) for base models to over 1700 kg (3748 lbs) for diesel/V6 variants.

🛡️ Safety Features

Ratings

NHTSA Ratings 2007:

Likely received 4 or 5-star ratings in front and side impact tests, consistent with Mercedes-Benz safety standards for the era.

IIHS Ratings:

Good ratings in front and side crash tests were common for this generation.

Active Features

Active Safety Systems:

ABS (Anti-lock Braking System), ASR (Anti-Slip Regulation), ESP (Electronic Stability Program), Brake Assist (BAS), optional Adaptive Cruise Control (Distronic).

Passive Features

Passive Safety Features:

Advanced airbag system (front, side, window airbags), seatbelt pre-tensioners and force limiters, crumple zones, reinforced passenger cell.

💡 Technology Features

Infotainment

Audio Navigation Systems:

COMAND (Cockpit Management and Navigation) system with CD/DVD playback, radio, optional navigation. Audio 20 (simpler system) also available.

Interface:

Central display screen, rotary knob and buttons on the center console for control.

Driver Assistance

Advanced Driver Assistance:

Optional: Distronic (adaptive cruise control), Parktronic (parking sensors), Bi-Xenon headlights with active curve illumination.

Connectivity

Connectivity Options:

Optional: Hands-free communication system (Bluetooth or proprietary phone modules), auxiliary input for audio.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 10,000 to 15,000 miles or 12 months, depending on driving conditions and oil specification used (e.g., via Service A/B indicators).

Major Service Intervals:

Includes spark plug replacement (e.g., ~60,000 miles), transmission fluid/filter change (e.g., ~40,000-60,000 miles), coolant flush, brake fluid flush (e.g., every 2 years).

Fluid Specifications

Engine Oil Specification:

MB-Approval 229.3 or 229.5 (e.g., Mobil 1 0W-40, Castrol Syntec 0W-30) for gasoline engines. Specific viscosity varies by climate and engine.

Coolant Specification:

MB-Approval 325.0 (Antifreeze/Coolant Concentrate, blue color) or 326.0 (pre-mixed). Glycol-based, silicate-free.

Brake Fluid Specification:

DOT 4 Plus (e.g., MB-Approval 331.0).

Known Issues

Common Problems Gasoline:

M271 engine: timing chain tensioner and guide rail wear, oil leaks from valve cover gasket, MAF sensor issues. M272/M112 V6: balance shaft gear wear (M272), oil cooler leaks, intake manifold flap issues.

Common Problems Diesel:

OM646/OM647/OM648: Glow plug issues, swirl flap motor failure, DPF regeneration issues (if equipped), injector problems. Common Rail pressure sensor faults.

Common Problems Electronics:

Window regulator failures, SAM unit (Signal Acquisition Module) corrosion/failure, CAN bus communication errors, ABS/ESP sensor faults.

Common Problems Suspension:

Front control arm bushings, ball joints, and tie rod ends wear. Strut mount failures.

📚 Vehicle History

Brand Heritage

Mercedes Benz Legacy:

Over a century of automotive innovation, synonymous with engineering excellence, safety, and luxury.

Model Evolution

W203 Development:

Successor to the W202 C-Class, aimed at a younger demographic with a more modern and dynamic design and increased technological content.

Facelifts:

Received a significant facelift in 2004, with updated styling (e.g., clear-lens headlights, revised bumpers, interior trim enhancements) and powertrain improvements.

Production

Production Period:

2000-2007

Manufacturing Locations:

Primary manufacturing in Sindelfingen and Bremen, Germany, with additional assembly plants worldwide.

🏆 Awards & Recognition

Recognitions

Ward S Auto World 10 Best Engines:

Various C-Class engines, including the M271 and M272, were recognized by Wards' AutoWorld for their performance and refinement during this generation's production.

Safety Awards:

Consistent high safety ratings from NCAP organizations and IIHS contributed to its reputation.

Ratings

Jd Power Dependability Ratings:

While initial quality was generally high, long-term dependability for some electronic components and specific engine variants could be mixed; the manual would be crucial for addressing these.