Mercedes X166 Rear Seat Regulator Switch Control Button Right O/S A1668201310

Mercedes X166 Rear Seat Regulator Switch Control Button Right O/S is an original component from the Switches, control elements and ignition locks group, designed for installation in the rear right part of the cabin. It ensures precise control over the passenger seat adjustment while maintaining factory ergonomics and consistency with the vehicle's electrical system.

Specifications and technical data

• SKU: A1668201310
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1668201310
• Substitutable numbers: A1668201310, A 166 820 13 10
• Location on the vehicle: Rear, Right
• Category: Switches & Controls

Purpose and function in the vehicle

The described switch is dedicated to the rear right seat in the X166 body style, where it is responsible for convenient seat adjustment control by the passenger. It is mounted directly in the side of the seat or the control panel, working in conjunction with the factory Mercedes electrical installation.

By maintaining the original design, this component allows for:

• maintaining full functionality of the seat adjustment in the rear right part of the cabin,
• consistent operation with other switches in the vehicle,
• maintaining the uniform interior aesthetics characteristic of Mercedes X166 models.

Construction and fitment for Mercedes X166

The Mercedes X166 Rear Seat Regulator Switch Control Button Right O/S has been designed specifically for the X166 platform, which translates into a proper fit for the upholstery, side panels, and wiring harness. The original geometry of the connectors and housing facilitates installation in place of the factory component, without the need for any wiring modifications.

Such a fit reduces the risk of looseness, incorrect button operation, or communication issues with control modules, which is particularly important in modern Mercedes comfort systems.

Application in the seat control system

As part of the Switches, control elements and ignition locks group, this component contributes to the system responsible for the comfortable operation of interior equipment. In the event of damage to the factory button, replacing it with an original switch from the same series allows for restoring:

• proper seat response to button movements,
• stable operation over a long period of use,
• intuitive operation for rear seat passengers.

This component is particularly useful for repairs following mechanical damage to the seat panel or in cases of problems with incomplete adjustment range resulting from switch wear.

Characteristics of the used component

The offered switch is a used component, which in practice means it comes from vehicle dismantling and has been verified for its suitability for further use. This type of part represents a reasonable compromise between the cost of repair and maintaining the original build quality characteristic of the Mercedes brand.

Choosing an original, used switch allows you to maintain the consistency of the seat control system, avoiding problems typical of replacements of uncertain origin.

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

Safety in selecting used components

When choosing used comfort and control system components, it is worth being guided by verified origin and compatibility with the specific vehicle version. In case of doubts regarding part selection, practical tips on assessing the condition of used components and how to verify them before installation may be helpful – you can find them in the article Second-hand braking system: how to safely select discs, calipers, and ABS?, which discusses universal principles for the safe purchase of used subassemblies.