Mercedes E220 CLA W212 C118 Steering Wheel Wiring Loom Harness A2045450126

Description

Mercedes E220 CLA W212 C118 Steering Wheel Wiring Loom Harness is an original component from the Wires, harnesses and connectors group, designed for the integration of the electrical system within the steering column. It enables the correct connection of control modules, switches, and other components in the steering wheel, ensuring stable communication within the Mercedes vehicle’s electrical system.

Specifications and technical data

• SKU: A2045450126
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2045450126
• Substitutable numbers: A2045450126, A 204 545 01 26
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function of the steering wheel wiring harness

The presented wiring harness has been designed specifically for use in the steering wheel area of Mercedes models from the E220, CLA, W212, and C118 families. It is responsible for the orderly routing of wires in the steering column, which minimizes the risk of chafing, short circuits, and signal interference within the control systems.

Thanks to its factory geometry and properly selected connectors, the harness allows for maintaining the correct positioning of wires relative to the steering wheel, control components, and column covers. This solution is particularly important when replacing a damaged installation after a collision, interference with the airbag system, or upgrading steering wheel equipment.

Construction and compatibility with the electrical system

The harness belongs to the Wires, harnesses and connectors group, which means it has been constructed as a complete set of wires with factory connectors dedicated to a specific steering wheel configuration in a Mercedes. The used connectors allow for a secure, stable connection to control modules and switches without the need for modifying the installation.

The original layout of the wires in the harness supports proper communication between the control elements in the steering wheel and the rest of the vehicle’s installation. This allows for maintaining consistency with the factory electrical architecture, which is crucial for the correct operation of functions handled from the steering wheel level.

Benefits of using an original Mercedes wiring harness

Using an original steering wheel wiring harness in a Mercedes brings a number of practical technical benefits:

• maintaining factory wire routing in the steering column,
• secure fit of connectors to modules and switches,
• reducing the risk of installation errors resulting from modifications or soldering,
• easier electrical system diagnostics due to compliance with service documentation.

For workshops and users, this means more predictable assembly, a lower risk of communication problems in the vehicle’s electrical network, and the ability to restore full steering wheel functionality after repairs.

Condition of the item and service application

The offered harness is a component removed from a vehicle, which makes it an attractive service solution in situations where it is necessary to replace a damaged installation within the steering wheel area. In practice, this allows for an economical repair of the electrical system while maintaining the manufacturer’s original specifications.

The harness will work well both for standard replacement of a damaged section of the installation and for more extensive work within the steering column, e.g., after replacing the steering wheel or control elements.

If you are planning a comprehensive repair or upgrade of the steering column area in your Mercedes and need other elements from the same group, such as wires, harnesses, or steering system connectors, check the available parts in the Mercedes Wires, harnesses and connectors category.

For those interested in a broader context of selecting used OEM components and the impact of correctly selected components on vehicle handling, an article describing the comparison of turbochargers in sports versions of the Mini Cooper S may be helpful – you can find it here: Go-Kart Feeling XXL – used N18 turbocharger versus B48.