Mercedes W639 Vito Viano Steering Wheel Air Module Driver Buttons A6398600700

Mercedes W639 Vito Viano Steering Wheel Air Module Driver Buttons is an original steering wheel control component designed for the Mercedes Vito and Viano W639 generation models. This component from the Dashboards group is responsible for convenient management of vehicle functions without taking your hands off the steering wheel, ensuring consistency with the factory Mercedes interior equipment.

Specifications and technical data

• SKU: A6398600700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6398600700
• Substitutable numbers: A6398600700, A 639 860 07 00
• Category: Dashboard Panels

Purpose and function of the button module

The presented module is a component mounted in the steering wheel area, in the immediate vicinity of the driver's airbag. It is responsible for operating functions available from the steering wheel, such as controlling onboard systems or navigating the instrument cluster menu, depending on the specific vehicle configuration.

Thanks to the use of an original Mercedes solution, the module maintains full compatibility with the electrical system and interior design of the Vito and Viano W639 models, which facilitates integration with the existing dashboard layout.

Benefits of using an original Mercedes module

Using a factory button module in Mercedes vehicles brings a number of practical benefits:

• maintaining visual consistency with other steering wheel and dashboard elements,
• secure fitment to the factory steering wheel rim and driver's airbag,
• proper cooperation with the vehicle's electronics without the need for installation modifications,
• the ability to restore full steering wheel control functionality after the previous module has been damaged.

For users who want to keep the vehicle in a configuration close to the factory one, choosing an original component from the Dashboards group is a technically safe and predictable solution in terms of operation.

Installation and operational characteristics

The steering wheel button module is structurally prepared for installation in a dedicated place on the steering wheel in Vito and Viano W639 models. Its installation in the driver's airbag zone requires following service procedures appropriate for work on passive safety systems, which should be entrusted to a specialized workshop.

The used component allows for an economical repair of the steering wheel control system while maintaining the manufacturer's original specifications. This is a practical solution in case of mechanical damage or problems with button operation after vehicle use.

Application in the dashboard system

As a part associated with the Dashboards group, the module contributes to the ergonomics of the driver's area in the Mercedes Vito/Viano W639. Proper placement of buttons on the steering wheel affects the comfort of operating vehicle functions, reducing the need to reach for the central part of the dashboard and improving concentration on the road.

Replacing a faulty module with a functional one allows you to restore intuitive operation of onboard systems, which is particularly important in commercial vehicles, where the convenience of daily operation and the repeatability of actions performed by the driver count.

If you are planning a comprehensive repair or upgrade of the cockpit area in your Mercedes and need other elements from the same group, such as control panels, covers, or additional functional modules, check the available parts in the Mercedes Dashboards category.

For drivers and workshops considering the use of aftermarket components in post-accident or maintenance repairs, it may be useful to compare the advantages of original used parts and replacements – more information can be found in the article Post-accident repair of your car: why are used body parts a better choice than replacements?.