Mercedes W177 Rear Window Control Button Switch Left Right N/O/S A1777203502

Mercedes W177 Rear Window Switch Button Left Right is an original part from the Switches, Control Elements and Ignition Switches category, designed to control the rear windows in a vehicle. Thanks to its factory design, it ensures consistent operation with the car's electrical system and maintains the ergonomics intended by the manufacturer. This is a practical solution for users who want to restore full functionality to the rear, left, or right window controls.

Specifications and technical data

• SKU: A1777203502
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777203502
• Substitutable numbers: A1777203502, A 177 720 35 02
• Location on the vehicle: Rear, Right, Left
• Category: Switches & Controls

Purpose and Vehicle Placement

The button is designed as a control element for the rear windows of the vehicle, with the possibility of installation on both the right and left sides. This solution allows for:

• precise fitting to the specific mounting location in the rear door,
• maintaining the original window control layout in a Mercedes,
• easy integration with the factory wiring harness.

This allows the switch to be used both as a replacement for a damaged part and as a component restoring full functionality after bodywork and paint repairs.

Technical Characteristics and Compatibility

As a part from the Switches, Control Elements and Ignition Switches group, the window switch is responsible for transmitting the control signal to the module responsible for the window regulator's operation. The design is adapted to the electrical standards used in Mercedes vehicles, which facilitates installation and reduces the risk of malfunction.

The product has a dedicated OEM part number and associated replacement numbers, which allows for verification of compatibility with a specific vehicle configuration. Before purchasing, it is advisable to compare the markings with the service documentation or the existing part to confirm full compatibility.

Product Condition and Service Application

The switch is offered as a used original part, which in practice means maintaining the factory geometry, connectors, and operating logic intended by the vehicle manufacturer. This type of part is particularly useful in:

• post-accident repairs where the local window control panel has been damaged,
• electrical system servicing where there are problems with the button's response,
• restoring full interior functionality after replacing upholstery or doors.

Using an original switch limits the need for installation modifications and minimizes the risk of incompatibility with other components of the window control system.

Benefits of Choosing an Original Mercedes Switch

By choosing the Mercedes W177 Rear Window Switch Button Left Right, you gain:

• visual consistency with other elements of the dashboard and door upholstery,
• maintenance of the ergonomics intended by the manufacturer,
• certainty of connector and mounting method compatibility with the factory door panel.

For workshops and services specializing in the Mercedes brand, this is a practical solution that allows for reduced repair time and a lower number of potential complaints related to non-original aftermarket parts.

Related Categories and Technical Materials

If you are looking for other Mercedes Switches, Control Elements and Ignition Switches, check out the Mercedes Switches, Control Elements and Ignition Switches available in our store to select the right components for your model.

During service work, the braking system is often diagnosed concurrently – in such cases, a guide on our blog may be helpful: Used Braking System: How to Safely Choose Discs, Calipers, and ABS?, which contains a practical checklist useful for selecting used parts.