Mercedes-Benz Mercedes CLK 2002-2009 Electrical Specifications
Mercedes-Benz Mercedes CLK 2002-2009

Mercedes-Benz Mercedes CLK 2002-2009 Electrical Specifications

Explore the comprehensive electrical specifications for the 2002-2009 Mercedes-Benz CLK. Learn about the battery, alternator, wiring, and lighting systems to optimize performance and troubleshoot issues effectively.

Updated

Overview Specifications

This document provides detailed electrical specifications for the 2002-2009 Mercedes CLK series. It covers essential components, systems, and technical details to assist in understanding the vehicle's electrical architecture. Use this guide for maintenance, troubleshooting, or upgrading purposes. The information is organized into major sections, each focusing on specific electrical aspects of the vehicle.

How to Use

Use the search functionality to quickly locate specific electrical components or systems by entering relevant keywords such as 'battery', 'wiring', or 'lighting'. This helps in finding precise information without browsing through the entire document.

Navigate through the document by selecting the desired section from the table of contents. Each section is divided into subsections, making it easy to find detailed information on specific electrical systems or components.

Key Specifications

Battery Voltage

12V

Alternator Output

150A

Headlight Power

35W

Ignition Coil Voltage

40,000V

Audio Output

500W

Available Specifications

Battery and Charging System

This section covers the battery specifications, charging system components, and related electrical details for the Mercedes CLK. It includes information on voltage, capacity, and maintenance tips to ensure optimal performance and longevity of the battery and charging system.

Battery Specifications
  • Battery Type: AGM (Absorbent Glass Mat)
  • Voltage: 12V
  • Capacity: 70 Ah
  • Cold Cranking Amps (CCA): 760A
  • Maintenance-Free Design
  • Location: Trunk or Engine Bay (varies by model)
Charging System
  • Alternator Type: Bosch
  • Alternator Output: 150A
  • Voltage Regulator: Integrated
  • Charging Voltage: 13.8V - 14.4V
  • Drive Belt: Serpentine
  • Charging System Diagnostics: Via OBD-II Port

Lighting Systems

This section details the lighting systems of the Mercedes CLK, including headlights, taillights, interior lights, and control mechanisms. It provides technical specifications and maintenance tips for ensuring proper functioning and compliance with safety standards.

Exterior Lighting
  • Headlight Type: Bi-Xenon HID
  • Headlight Power: 35W
  • Taillight Type: LED
  • Fog Lights: Halogen
  • Turn Signals: LED
  • Automatic Headlight Control: Adaptive
Interior Lighting
  • Dashboard Lighting: LED
  • Dome Light: Halogen
  • Footwell Lighting: LED
  • Ambient Lighting: Multi-Color LED
  • Reading Lights: Halogen
  • Lighting Control: CAN Bus

Engine Electrical Systems

This section focuses on the electrical components related to the engine, including ignition, sensors, and control units. It provides detailed information on the specifications and functions of these systems to ensure optimal engine performance.

Ignition System
  • Ignition Type: Coil-on-Plug
  • Spark Plugs: Iridium
  • Ignition Coil Voltage: 40,000V
  • Ignition Timing: ECU Controlled
  • Spark Plug Gap: 0.8mm
  • Ignition System Diagnostics: Via OBD-II Port
Engine Control Unit (ECU)
  • ECU Type: Bosch ME 9.7
  • Input Sensors: MAF, MAP, O2, Crank Position
  • Output Controls: Fuel Injectors, Ignition Coils
  • ECU Communication: CAN Bus
  • Software Updates: Dealer or Specialist Required
  • ECU Diagnostics: Via OBD-II Port

Infotainment and Connectivity

This section covers the infotainment and connectivity systems in the Mercedes CLK, including audio, navigation, and communication features. It provides specifications and usage tips to enhance the in-car entertainment experience.

Audio System
  • Head Unit: COMAND APS
  • Speakers: Harman Kardon
  • Amplifier: 5-Channel
  • Audio Output: 500W
  • Audio Inputs: CD, AUX, USB
  • Bluetooth: Hands-Free Calling
Navigation and Communication
  • Navigation System: GPS with Map Updates
  • Display: 6.5" Color LCD
  • Voice Control: Integrated
  • Telematics: Mercedes-Benz Tele Aid
  • Phone Integration: Bluetooth
  • Traffic Information: Real-Time Updates

Safety and Security Systems

This section details the safety and security electrical systems in the Mercedes CLK, including airbags, ABS, and alarm systems. It provides technical specifications and maintenance tips to ensure the vehicle's safety features are functioning correctly.

Airbag System
  • Front Airbags: Dual-Stage
  • Side Airbags: Curtain and Seat-Mounted
  • Occupant Detection: Weight Sensor
  • Crash Sensors: Multi-Point
  • Airbag Control Unit: Bosch
  • Deployment Speed: 200ms
Anti-Lock Braking System (ABS)
  • ABS Type: Bosch 8.0
  • Wheel Speed Sensors: Magnetic
  • Brake Force Distribution: Electronic
  • Traction Control: Integrated
  • ABS Diagnostics: Via OBD-II Port
  • Hydraulic Unit: Integrated Pump

Component Specifications

Overview

Type
12V system
Configuration
Negative ground
Platform
W209
Material
Copper wiring
Location
Engine bay and cabin

Dimensions

Battery Length
10.6 inches (269 mm)
Battery Width
6.9 inches (175 mm)
Battery Height
7.5 inches (190 mm)
Alternator Diameter
5.9 inches (150 mm)
Alternator Width
3.9 inches (100 mm)
Starter Motor Length
6.3 inches (160 mm)
Starter Motor Diameter
3.5 inches (89 mm)

Materials

Battery Case
Polypropylene
Alternator Housing
Aluminum alloy
Starter Motor Housing
Steel
Wiring Harness
Copper with PVC insulation

Features

Lighting
  • Bi-xenon headlights
  • LED taillights
  • Automatic headlight control
  • Daytime running lights
Power Management
  • Battery monitoring system
  • Energy-saving mode
  • Alternator load response
  • Start-stop system
infotainment
  • COMAND system
  • Bluetooth connectivity
  • Navigation system
  • Voice control
Safety Systems
  • Anti-lock braking system (ABS)
  • Electronic stability program (ESP)
  • Tire pressure monitoring system
  • Parking sensors
Comfort Features
  • Automatic climate control
  • Heated seats
  • Power windows
  • Keyless entry

Safety Features

Circuit Protection
  • Fuse box with 40 fuses
  • Circuit breakers
  • Overload protection
Emergency Systems
  • Hazard warning lights
  • Emergency brake assist
  • Automatic door unlock

Comfort Features

Climate Control
  • Dual-zone automatic climate control
  • Air quality sensor
  • Rear defrost
Seating
  • Heated front seats
  • Power adjustable seats
  • Memory function
Lighting
  • Ambient interior lighting
  • Automatic dimming rearview mirror
  • Puddle lights

Accessories

Audio
  • Premium sound system
  • CD changer
  • Auxiliary input
Communication
  • Hands-free phone system
  • Voice command
  • Bluetooth audio streaming
Lighting
  • Fog lights
  • Adaptive headlights
  • LED daytime running lights

Maintenance

Service interval
Every 10,000 miles or 12 months
Items
  • Battery inspection and testing
  • Alternator belt replacement
  • Starter motor inspection
  • Fuse and relay check
  • Wiring harness inspection
Notes
Use only OEM parts for replacements

Warranty

Battery Warranty
Miles: 36,000
Years: 2
Coverage: Replacement
Alternator Warranty
Miles: 50,000
Years: 3
Coverage: Repair or replacement
Starter Motor Warranty
Miles: 50,000
Years: 3
Coverage: Repair or replacement
Electrical System Warranty
Miles: 100,000
Years: 4
Coverage: Repair

Production Details

Manufacturer
Mercedes-Benz
Manufacturing Process
  • Automated assembly
  • Quality control testing
  • Environmental compliance
Quality Control
Testing: High-voltage testing
inspection: Visual and functional inspection
Sustainability Practices
  • Recycling of old batteries
  • Lead-free solder
  • Energy-efficient production
Production Metrics
Units Per Year: 50,000
Production Time: 8 hours

Service Information for electrical Service

Maintenance and service requirements specific to this component

10,000
12
  • Battery inspection and testing
  • Alternator belt inspection
  • Starter motor inspection
  • Fuse and relay check
  • Wiring harness inspection

Ensure all connections are clean and secure

20,000
24
  • Battery terminal cleaning
  • Alternator belt replacement
  • Alternator output test
  • Starter motor performance test
  • Ground wire inspection

Check for any signs of corrosion or wear

50,000
60
  • Battery replacement if needed
  • Alternator inspection and testing
  • Starter motor inspection and testing
  • Complete wiring harness check
  • Electrical system diagnostic

Perform full system diagnostic to ensure optimal performance

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the electrical system specifications for the 2002-2009 Mercedes CLK?

The 2002-2009 Mercedes CLK features a 12-volt electrical system with a 90-120 Ah battery, depending on the model. It supports advanced systems like CAN-Bus for communication between control units. The alternator output ranges from 120-150 A. Compatibility includes standard Mercedes-Benz electrical components, but aftermarket parts must meet OEM specifications to ensure proper integration and performance.

Q2

What maintenance is required for the electrical system of the 2002-2009 Mercedes CLK?

Regular maintenance includes checking the battery health every 6 months, inspecting wiring for wear or corrosion, and ensuring the alternator and starter motor function properly. Replace the battery every 4-5 years. Clean electrical contacts and connectors annually. Follow the manufacturer's service schedule for updates to control unit software and diagnostics to maintain optimal performance.

Q3

How do I replace the battery in a 2002-2009 Mercedes CLK?

To replace the battery, first, disconnect the negative terminal, then the positive terminal. Remove the battery hold-down clamp and carefully lift the battery out. Install the new battery, ensuring it matches the OEM specifications. Reconnect the positive terminal first, then the negative terminal. Secure the hold-down clamp. Reset the vehicle's electronic systems if necessary to avoid errors.

Q4

What should I do if the electrical system in my 2002-2009 Mercedes CLK malfunctions?

Start by checking the battery voltage with a multimeter; it should read 12.6V when off and 13.7-14.7V when running. Inspect fuses and relays for damage. Use a diagnostic scanner to read fault codes from the control units. Common issues include faulty alternators, corroded wiring, or failing sensors. Address any identified problems promptly to avoid further damage.

Q5

How can I optimize the electrical system performance in my 2002-2009 Mercedes CLK?

Ensure the battery is fully charged and in good condition. Use high-quality wiring and connectors to minimize resistance. Regularly update the vehicle's software to the latest version. Avoid overloading the electrical system with aftermarket accessories. Use energy-efficient LED bulbs for lighting. Perform routine diagnostics to identify and resolve potential issues early.

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 CLK 2002-2009 Service Manual

Coming Soon

Comprehensive guide covering electrical system maintenance, troubleshooting, and repair procedures for the 2002-2009 Mercedes CLK.

Technical Service Bulletin: Electrical System Updates

Coming Soon

Details software updates and fixes for common electrical system issues in the 2002-2009 Mercedes CLK.

Mercedes CLK Electrical Parts Catalog

Coming Soon

Complete catalog of OEM electrical components, including part numbers and compatibility details for the 2002-2009 CLK.

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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