Mercedes-Benz CLC CL203 Rear Tailgate Boot Lid Wiring Harness Loom A2034404913

Mercedes-Benz CLC CL203 Rear Tailgate Boot Lid Wiring Harness Loom is a specialized component from the Wires, harnesses, and connectors category, designed to manage the electrical installation in the rear part of the vehicle body. It enables a stable electrical connection for components located in the tailgate, ensuring the proper operation of lighting, the lock, and other electrical consumers in this area.

Specifications and technical data

• SKU: A2034404913
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2034404913
• Substitutable numbers: A2034404913, A 203 440 49 13
• Location on the vehicle: Rear
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function of the tailgate wiring harness

The tailgate wiring harness in the CL203 model is responsible for transmitting signals and power between the vehicle's main electrical system and components located at the rear of the body. Its placement in the rear zone means the component operates in an area exposed to tailgate movement, temperature fluctuations, and moisture, which is why a correctly selected harness is crucial for the stability of the electrical system.

The appropriate design of wires and connectors helps reduce voltage drops, signal interference, and common faults resulting from chafing or broken conductive cores. Using a dedicated harness for the specific CL203 body style facilitates installation and minimizes the risk of installation errors.

Benefits of using an original Mercedes harness

Choosing a harness designed for a specific Mercedes model translates into:

• precise matching of wire lengths to the geometry of the tailgate,
• preservation of factory mounting points and installation routing,
• compatibility with original connectors and sockets in the vehicle,
• reduced risk of contact looseness and electrical communication issues.

Thanks to this, the operation of lighting, the lock, and other consumers in the rear of the vehicle remains stable, and the diagnosis of potential faults is simpler because the system retains its factory structure.

Component condition and service application

The tailgate wiring harness is offered in used condition, which allows for an economical repair of the electrical system while maintaining the manufacturer's original specifications. This is a practical solution in situations where the existing installation has suffered mechanical damage, chafing in the tailgate hinge, or contact corrosion.

The component is suitable both for the standard replacement of a damaged harness and for service work related to restoring full functionality to the rear of the body, e.g., after a collision or bodywork and paint repairs.

Integration with the vehicle's electrical system

The tailgate wiring harness is part of the vehicle's larger electrical system, so its correct operation affects the performance of several sub-assemblies simultaneously. A correctly selected and installed component:

• ensures stable power supply to consumers in the rear of the body,
• reduces the risk of errors appearing in comfort and lighting systems,
• facilitates subsequent computer diagnostics by maintaining the factory wiring layout.

Replacing the harness with a compatible component allows you to avoid makeshift repairs, such as soldering individual wires or using non-original connectors, which improves the reliability of the installation in the long term.

If you are planning a comprehensive repair or upgrade of the rear zone in your Mercedes and need other elements from the same group, such as power cables, signal harnesses, or electrical installation connectors, check the available parts in the Mercedes Wires, harnesses, and connectors category.

For drivers interested in broader vehicle system diagnostics, including the analysis of symptoms related to power supply and engine unit operation, an article describing typical problems with the diesel injection system may be helpful – diesel injector faults, their symptoms, and the consequences of neglect.