Mercedes-Benz Mercedes C-Class 2007-2014 Electrical Specifications
Mercedes-Benz Mercedes C-Class 2007-2014

Mercedes-Benz Mercedes C-Class 2007-2014 Electrical Specifications

Discover detailed electrical specifications for the 2007-2014 Mercedes C-Class, including battery, alternator, fuse box, and wiring details. Essential for maintenance and repair.

Updated

Overview Specifications

This document provides a detailed overview of the electrical specifications for the 2007-2014 Mercedes C-Class. It includes information on the vehicle's electrical systems, components, and key technical details. Use this guide to understand the electrical architecture, troubleshoot issues, or identify specifications for maintenance and upgrades. The document is organized into sections for easy navigation, with subsections breaking down specific electrical systems and features.

How to Use

Use the search functionality to quickly locate specific electrical components or terms. Enter keywords like 'battery', 'alternator', or 'fuse box' to find relevant information. The search feature is case-insensitive and supports partial matches for convenience.

Navigate through the document using the section titles and subsections. Each major section is dedicated to a specific electrical system, and subsections provide detailed technical points. Use the table of contents or scroll through the document to find the information you need.

Key Specifications

Battery Capacity

80 Ah

Alternator Output

150 A

Headlight Type

Bi-Xenon (optional)

Audio System

8-speaker (standard)

Bluetooth

Standard (2010+)

Available Specifications

Battery and Charging System

This section covers the battery specifications, charging system components, and related electrical details for the 2007-2014 Mercedes C-Class. Learn about the battery type, capacity, and maintenance requirements, as well as the alternator's output and charging system functionality.

Battery Specifications
  • Battery Type: AGM (Absorbent Glass Mat)
  • Capacity: 80 Ah
  • Voltage: 12 V
  • Cold Cranking Amps (CCA): 800 A
  • Battery Location: Trunk
  • Maintenance: Maintenance-free
Charging System
  • Alternator Type: Bosch
  • Alternator Output: 150 A
  • Voltage Regulator: Integrated
  • Charging Indicator: Dashboard light
  • Battery Monitoring System: Yes

Lighting System

This section provides information on the lighting system, including headlights, taillights, interior lights, and advanced lighting features. Understand the types of bulbs used, lighting controls, and optional lighting technologies available for the C-Class.

Exterior Lighting
  • Headlight Type: Bi-Xenon (optional)
  • Headlight Bulb: H7 (halogen models)
  • Taillight Type: LED
  • Fog Lights: Standard
  • Daytime Running Lights: Optional
Interior Lighting
  • Dashboard Lights: LED
  • Reading Lights: Halogen
  • Ambient Lighting: Optional
  • Footwell Lights: Standard
  • Trunk Light: LED

Infotainment and Connectivity

Explore the infotainment and connectivity features of the 2007-2014 Mercedes C-Class. This section covers the audio system, navigation, Bluetooth, and other electronic interfaces, including compatibility with external devices.

Audio System
  • Standard Audio: 8-speaker system
  • Optional Audio: Harman Kardon surround sound
  • Radio: AM/FM/CD
  • MP3 Compatibility: Yes
  • USB Port: Optional
  • Auxiliary Input: Standard
Navigation and Connectivity
  • Navigation System: COMAND APS (optional)
  • Bluetooth: Standard (2010 and later)
  • Voice Control: Optional
  • Satellite Radio: Optional
  • Smartphone Integration: Optional

Component Specifications

Overview

Type
12V DC system
Configuration
Single battery with alternator
Platform
W204
Material
Lead-acid battery
Location
Engine compartment

Dimensions

Battery Length
12.5 inches (31.75 cm)
Battery Width
6.8 inches (17.27 cm)
Battery Height
7.5 inches (19.05 cm)
Alternator Diameter
5.9 inches (15 cm)
Alternator Length
7.87 inches (20 cm)
Fuse Box Length
8.66 inches (22 cm)
Fuse Box Width
5.9 inches (15 cm)

Materials

Battery Case
Polypropylene
Alternator Housing
Aluminum alloy
Wiring Harness
Copper with PVC insulation
Fuse Box
Thermoplastic

Features

Lighting
  • Bi-xenon headlights
  • LED daytime running lights
  • Adaptive highbeam assist
  • Automatic headlight control
infotainment
  • COMAND system
  • Bluetooth connectivity
  • Navigation system
  • Voice control
Safety
  • ESP (Electronic Stability Program)
  • ABS (Anti-lock Braking System)
  • Pre-Safe system
  • Tire pressure monitoring
Comfort
  • Automatic climate control
  • Heated seats
  • Power windows
  • Keyless Go
Convenience
  • Auto-dimming rearview mirror
  • Rain-sensing wipers
  • Power-folding mirrors
  • Ambient lighting

Safety Features

Crash Safety
  • Airbag control unit
  • Seatbelt pretensioners
  • Emergency call system
Electrical Safety
  • Short circuit protection
  • Overload protection
  • Ground fault detection

Comfort Features

Climate
  • Dual-zone automatic climate control
  • Air quality sensor
  • Rear ventilation
Seating
  • Heated front seats
  • Memory function for driver seat
  • Lumbar support
Lighting
  • Ambient interior lighting
  • Approach lighting
  • Puddle lamps

Accessories

Charging
  • USB port
  • 12V power outlet
  • Wireless charging pad
Audio
  • Harman Kardon sound system
  • SD card reader
  • Auxiliary input
Navigation
  • GPS antenna
  • Traffic information
  • Map updates

Maintenance

Service interval
Every 10,000 miles or 12 months
Service Items
  • Battery health check
  • Alternator output test
  • Fuse inspection
  • Wiring harness inspection
  • Ground connection check
Maintenance Notes
Use only Mercedes-approved electrical components for replacements

Warranty

Battery Warranty
Miles: 36,000
Years: 3
Coverage: Replacement for defects
Electrical System Warranty
Miles: 50,000
Years: 4
Coverage: Repair or replacement
Alternator Warranty
Miles: 50,000
Years: 4
Coverage: Replacement for failure
Warranty Terms
Transferable to subsequent owners within warranty period

Production Details

Manufacturer
Mercedes-Benz
Manufacturing Process
  • Automated assembly
  • Quality control testing
  • Environmental compliance
Quality Control
Testing: 100% electrical system functional test
Certifications: ISO 9001, ISO 14001
Sustainability Practices
  • Recycling of old batteries
  • Energy-efficient manufacturing
  • Reduced VOC emissions
Production Metrics
Units Per Year: 150,000
Defect Rate: 0.1%
Energy Consumption: 15 kWh per vehicle

Service Information for electrical Service

Maintenance and service requirements specific to this component

10,000
12
  • Battery terminal cleaning
  • Alternator belt inspection
  • Electrical system diagnostic scan
  • Ground connections check
  • Fuse box inspection

Perform full system diagnostics using Mercedes Star Diagnostic system

30,000
36
  • Battery load test
  • Alternator output verification
  • Wiring harness inspection
  • Lighting system check
  • Charging system test

Use approved testing equipment for accurate measurements

50,000
60
  • Battery replacement if needed
  • Alternator brush inspection
  • Complete electrical system review
  • Ground strap replacement
  • Fuse box cleaning

Consider preventive replacement of aging components

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Are electrical components of the 2007-2014 Mercedes C-Class compatible with newer models?

Electrical components for the 2007-2014 Mercedes C-Class are generally not compatible with newer models due to differences in design and technology. For instance, wiring harnesses, control modules, and sensors are often model-specific. Always verify part numbers and consult technical documentation or a Mercedes-Benz dealership to ensure compatibility before attempting any upgrades or replacements.

Q2

What are the maintenance requirements for the electrical system of the 2007-2014 Mercedes C-Class?

The electrical system of the 2007-2014 Mercedes C-Class requires regular inspections to ensure optimal performance. Check the battery every 6 months for corrosion and charge levels. Inspect wiring harnesses for wear or damage annually. Replace fuses as needed and ensure all connectors are secure. Software updates for control modules should be performed by a certified technician during routine service intervals.

Q3

How do I replace the alternator in a 2007-2014 Mercedes C-Class?

To replace the alternator, first disconnect the battery to prevent electrical shorts. Remove the serpentine belt using a tensioner tool. Disconnect the electrical connectors and mounting bolts from the alternator. Install the new alternator by reversing the steps, ensuring all connections are secure. Reconnect the battery and test the system to verify proper operation. Refer to the service manual for detailed instructions.

Q4

What should I do if my Mercedes C-Class electrical system is malfunctioning?

If your electrical system malfunctions, start by checking the battery voltage and terminals for corrosion. Inspect fuses and replace any that are blown. Use a diagnostic scanner to identify error codes from control modules. Common issues include faulty sensors, wiring damage, or software glitches. If the problem persists, consult a certified technician for further diagnosis and repair.

Q5

How can I optimize the electrical system performance in my 2007-2014 Mercedes C-Class?

To optimize performance, ensure the battery is fully charged and in good condition. Regularly inspect and clean electrical connections to prevent corrosion. Use genuine Mercedes-Benz parts for replacements to maintain compatibility. Keep the software for control modules updated to the latest version. Avoid overloading the electrical system by minimizing the use of aftermarket accessories.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

Mercedes C-Class W204 Service Manual

Coming Soon

Comprehensive service manual covering electrical systems, maintenance procedures, and troubleshooting for the 2007-2014 Mercedes C-Class.

Technical Service Bulletin: Electrical System Updates

Coming Soon

Details software updates and improvements for the electrical system of the 2007-2014 Mercedes C-Class.

Mercedes C-Class Electrical Parts Catalog

Coming Soon

Catalog listing genuine electrical components and accessories for the 2007-2014 Mercedes C-Class.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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