Mercedes W639 Switch Control Panel Hazard ASR Heated Seat Button A6398701810

Mercedes W639 Switch Control Panel Hazard ASR Heated Seat Button is an original component from the Switches, control elements and ignition locks group, designed to operate key comfort and safety functions in the cabin. This used button module allows for convenient control of hazard lights, the ASR traction control system, and seat heating from the central console, maintaining factory ergonomics and interior consistency.

Specifications and technical data

• SKU: A6398701810
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6398701810
• Substitutable numbers: A6398701810, A 639 870 18 10
• Category: Switches & Controls

Function and application in the Mercedes W639

The panel combines several important control buttons in one housing, which facilitates quick access to the most frequently used functions for the driver. The integrated hazard light button allows for immediate signaling of road hazards, while the ASR button enables controlled deactivation or activation of the traction support system in specific driving conditions. Additional seat heating buttons ensure thermal comfort for the driver and passenger, especially during the autumn and winter seasons.

Thanks to its factory design, the panel is matched to the dashboard architecture of the Mercedes W639, which translates into aesthetic installation and preservation of the original cockpit look. The layout of the buttons is intuitive, and their shape and travel ensure confident, tactile operation without taking your eyes off the road.

Construction and integration with the vehicle's electrical system

The control panel is an electrical component designed to work with the factory Mercedes installation. The connectors used allow for direct connection to the wiring harness, which facilitates the replacement of a damaged module without the need for installation modifications. The housing is dimensionally matched to the mounting slot in the center console, which minimizes the risk of looseness, rattles, and unwanted vibrations while driving.

The markings on the buttons are legible, and their layout is consistent with the brand's factory standards, which allows for maintaining operational consistency with other control elements in the vehicle. This method of integration promotes trouble-free operation and facilitates the diagnostics of potential faults in the future.

Benefits of using an original control panel

Using an original control panel in a Mercedes W639 allows you to maintain full functionality of safety and comfort systems without quality compromises. Compared to replacements, the factory element ensures:

• secure fit to the dashboard and factory mounts,
• proper cooperation with the vehicle's electronics,
• consistent appearance with other interior elements,
• easier identification in service diagnostics.

For users who want to restore full functionality of the hazard, ASR, and seat heating buttons, replacing it with an original panel from the same model series is a technically safe and economically justified solution.

Condition, verification, and selection of parts

The item comes from a used vehicle, which allows for a favorable price-to-functionality ratio while maintaining factory specifications. Before installation, it is recommended to perform a standard check of the vehicle's electrical system and verify compatibility with the equipment of the specific Mercedes W639 unit to ensure proper cooperation of all supported systems.

Manufacturer markings and the OEM part number, which in our store are linked to parameters such as Brand, Condition, or Replaceable numbers presented in the technical specification section, are helpful in selecting the appropriate panel. This makes it easier to match the module to a specific vehicle configuration without the risk of purchasing an incompatible element.

If you are planning a comprehensive repair or modernization of the control zone in your Mercedes and need other elements from the same group, such as function buttons, control modules, or ignition lock inserts, check the available parts in the Switches, control elements and ignition locks Mercedes category.

When working with electrical installations and elements affecting driving safety, it is worth knowing good practices for selecting used components – our blog guide will be helpful: Second-hand braking system: how to safely choose discs, calipers, and ABS?, which shows how to responsibly approach the purchase of key components in a store like ours.