Audi S4 B9 Front Seat Massage Unit Switch Right O/S Control Button 4H0959917A

Visual condition of the part

The product shows signs of use visible in the photos.

Audi S4 B9 Front Seat Massage Unit Switch Right O/S Control Button is an original control component designed to operate the massage function in the passenger seat of luxury Audi models. This specialized switch from the Switches, control elements and ignition locks category allows for precise management of massage settings, supporting comfort and ergonomics while driving. The used OEM component ensures factory-fit compatibility with the electrical installation and the seat side panel.

Specifications and technical data

• SKU: 4H0959917A
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0959917A
• Substitutable numbers: 4H0959917A, 4H0 959 917 A
• Location on the vehicle: Front, Right
• Category: Switches & Controls

Purpose and function of the massage switch

The switch is responsible for controlling the massage function in the front seat on the right side, which is particularly important in premium class vehicles such as the Audi A8 4H generation. This component works with the seat module and the comfort system, enabling the control of individual massage modes, intensity, and the activation or deactivation of the function.

Thanks to its factory design, the switch is integrated into the seat adjustment system, allowing for consistent operating ergonomics and interior aesthetics. This solution is dedicated to a specific vehicle placement, which minimizes the risk of assembly and compatibility issues.

Construction and fitment for the passenger seat

The massage switch has been designed for installation in the side panel of the front passenger seat. The button layout and housing shape are adapted to the factory upholstery contouring and the electrical wiring harness routing in the Audi A8 4H. As a result, the component maintains a consistent look with other seat controls and does not require any interference with the seat structure.

Original electrical connectors allow for a near plug-and-play connection while maintaining proper communication with the comfort module. This is particularly important in vehicles equipped with advanced seat control systems, where correct recognition of signals from the switch affects the stable operation of the massage function.

Application in service and interior upgrades

This massage switch is suitable both for the standard replacement of a damaged component and for restoring full seat functionality after upholstery or electrical repairs. The used OEM component allows for maintaining the original character of the interior, which is significant when servicing high-end vehicles where equipment consistency and compliance with factory specifications matter.

In workshop practice, such an element is often used for:

• repairing a faulty massage function in the passenger seat,
• restoring the installation after a collision or interior flooding,
• replacing missing controllers after upgrading seats to versions with massage.

Condition, verification, and technical aspects

The switch comes from the used parts segment, which means that before installation, it is worth verifying the correct operation of all working positions and the condition of the connectors. In service practice, it is recommended to check the seat module's response to signals from the switch and perform a visual inspection of the housing for any potential mechanical damage resulting from use.

To maintain full functionality of the comfort system, it is also important to correctly position the element on the vehicle – in accordance with its intended use for the front seat on the right side. Proper fitment to the specific Audi A8 4H equipment version helps avoid compatibility issues and errors in the seat control system.

If you are planning a comprehensive repair or upgrade of the seat control zone in your Audi and need other elements from the same group, such as adjustment buttons, knobs, or seat control modules, check the available parts in the Audi switches, control elements and ignition locks category.

When working with advanced comfort systems, it is also worth ensuring an efficient braking system, especially when the vehicle is used intensively. To make informed choices regarding used safety components, such as discs, calipers, or ABS elements, the following guide will be helpful: Second-hand braking system: how to safely choose discs, calipers, and ABS?.