Mercedes W204 Window Switch Driver's Side Door Regulation Panel Unit A2048703558

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W204 Window Switch Driver's Side Door Regulation Panel Unit is an original control component designed for operating the electric windows in the driver's door of W204 series models. This factory-original button panel ensures precise window control and seamless integration with the vehicle's electrical system. By maintaining the OEM design, it provides a reliable service solution for window control system repairs.

Specifications and technical data

• SKU: A2048703558-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2048703558
• Substitutable numbers: A2048703558, A 204 870 35 58
• Category: Switches & Controls

Purpose and function of the window control panel

The button panel mounted in the driver's door is responsible for controlling the electric windows and transmitting signals to the comfort modules. In the event of faults such as unresponsive windows, intermittent operation, or button malfunctions, replacing the complete switch is usually the fastest and most predictable service solution.

The original panel from the Switches, control elements, and ignition locks group guarantees compatibility with the factory door wiring harness and proper cooperation with the body electronics, without the need for any installation modifications.

Construction and fitment for Mercedes W204

The panel has been designed specifically for the geometry of the Mercedes W204 door, which translates into:

• proper fitment with the door upholstery and factory mounts,
• correct positioning of buttons within the driver's reach,
• preservation of the original window operation ergonomics.

Thanks to the OEM design, visual consistency with other cockpit elements is maintained, and the panel does not require any additional adjustments or modifications after installation.

Benefits of using an original switch

Using a factory window control panel in a Mercedes W204 helps reduce the risk of issues typical of aftermarket replacements, such as unreliable button operation or communication errors with the vehicle's electronics. The original component ensures:

• stable operation of the window control system in daily use,
• correct reproduction of functions intended by the manufacturer,
• easier diagnostics during future electrical inspections.

The product comes from the used OEM parts segment, which allows for combining factory-standard performance with reduced repair costs compared to purchasing a new component.

Condition, verification, and service application

The item is offered as a used original component, which in practice means it has been removed from a vehicle and verified for further serviceability. This type of solution is particularly beneficial for maintenance repairs where the priority is to maintain factory quality within a reasonable service budget.

The switch panel is suitable both for the typical replacement of a damaged part and for restoring full window control functionality after door wiring repairs.

Expanding the control system in your Mercedes

If you are planning a comprehensive repair or upgrade of the door control area in your Mercedes and need other elements from the same group, such as additional button panels, control modules, or ignition lock components, check out the available parts in the Mercedes Switches, control elements, and ignition locks category.

To better plan your repair using original dismantled components and to consciously select used parts for your car, it is worth reading the guide on our blog: Used parts for Mercedes – original components from dismantling.