Mercedes-Benz Vito Viano W639 Steering Wheel Slip Ring Airbag Squib A6394640218

Mercedes-Benz Vito Viano W639 Steering Wheel Slip Ring Airbag Squib is a specialized component from the Switches, control elements and ignition locks category, responsible for the safe transmission of electrical signals within the steering column. It enables stable operation of steering wheel buttons, the horn, and other control functions, maintaining their continuity while the steering wheel is turned. This solution is designed for users who expect precise operation of control systems in the Mercedes-Benz Vito W639.

Specifications and technical data

• SKU: A6394640218
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6394640218
• Substitutable numbers: A6394640218, A 639 464 02 18, KZ
• Category: Switches & Controls

Function and application of the steering wheel slip ring in the Mercedes-Benz Vito W639

The steering wheel slip ring in the Vito W639 model is responsible for transferring electrical signals between the stationary part of the steering column and the rotating steering wheel. Thanks to its specific design, the conductive ribbon is guided in a controlled manner, which minimizes the risk of circuit interruption during steering.

In practice, this ensures the proper operation of functions such as:

• steering wheel button control,
• horn operation,
• transmission of signals to control systems within the steering column.

Benefits of using an original steering wheel slip ring

Using a steering wheel slip ring dedicated to the Mercedes-Benz Vito W639 allows for maintaining the factory performance characteristics of the control systems. The appropriate geometry and fit to the steering column reduce stress on the ribbon, which promotes the stability of electrical connections.

The main advantages include:

• compatibility with the factory control system in the given model,
• maintaining the switch operation logic intended by the manufacturer,
• the ability to restore the correct operation of functions handled from the steering wheel after the failure of a previous component.

Product characteristics and assembly group

The presented steering wheel slip ring belongs to the Switches, control elements and ignition locks group, which means it works with other components responsible for handling driver functions within the steering column. This element is intended for installation in a Mercedes brand vehicle, in the Vito W639 body version, while maintaining factory mounting points.

The product comes from dismantling, which allows for the use of an original design solution to replace a worn or damaged component, while maintaining a favorable cost-to-functionality ratio.

Selection and compatibility verification

When selecting a steering wheel slip ring for a specific Vito W639 unit, it is crucial to compare technical parameters and vehicle equipment configuration. It is worth paying attention to compatibility with the switches and control systems used in the car to avoid communication problems between modules.

In case of doubt, a good solution is to compare the existing component with the offered product in terms of connector design, housing shape, and the way the ribbon is guided inside the slip ring. This helps reduce the risk of incorrect installation and ensures proper system operation after installation.

Expanding the control system in a Mercedes-Benz

If you are planning a comprehensive repair or upgrade of the control zone in your Mercedes and need other elements from the same group, such as combination switches, steering column control elements, or ignition lock components, check the available parts in the Mercedes switches, control elements and ignition locks category.

More about used parts for Mercedes

When choosing components from dismantling, it is worth knowing the specifics of the original components of this brand and their behavior during long-term operation. A broader discussion of the topic, along with examples of using used components in premium class vehicles, can be found in the article Used parts for Mercedes – original components from dismantling, which helps in making an informed approach to selecting such service solutions.