Door Lock Switch Mercedes W177 W247 Locking Button Front Right O/S A2479052301

The Right Front Door Lock Button Mercedes W177 / W247 is an original part from the Switches, Control Elements, and Ignition Switches group, designed for installation in the driver or passenger door area on the outer side (O/S) in modern A-Class and B-Class models. This factory central locking switch ensures consistent operation with the vehicle's electrical system and maintains interior aesthetics in line with Mercedes standards.

Specifications and technical data

• SKU: rhd-A2479052301
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2479052301
• Substitutable numbers: A2479052301, A 247 905 23 01, KD
• Location on the vehicle: Front, Right
• Category: Switches & Controls

Purpose and Function in the Vehicle

The presented door lock switch is dedicated for installation on the front right side of the vehicle. It is responsible for controlling the locking and unlocking function of the doors, working in conjunction with the factory comfort module and the CAN bus system in Mercedes vehicles.

By using an original solution from the W177 / W247 series, the following are preserved:

• correct central locking logic,
• consistent button illumination and ergonomics,
• compatibility with factory door wiring harnesses.

Construction and Fit for Mercedes W177 / W247

The door lock button has been specifically designed for the door architecture in the Mercedes A-Class (W177) and B-Class (W247). This means a precise fit for the window and mirror control panel frame and secure mounting in the original mounting points.

Key construction features:

• factory electrical connector geometry,
• housing profile consistent with the door panel line,
• ergonomic button shape for easy operation while driving.

Benefits of Using an Original Switch

Using an original door lock switch in a Mercedes offers tangible operational and service benefits. A part from the same production line as the factory equipment:

• minimizes the risk of communication errors with the body electronics,
• ensures stable central locking operation over a long period of use,
• eliminates problems with mechanical fit and panel looseness.

Additionally, as a part from the Switches, Control Elements, and Ignition Switches group, the switch maintains a uniform interior style and finish, which is particularly important in premium vehicles.

Condition, Origin, and Service Application

The offered part is an original Mercedes component from dismantling, allowing for the combination of factory quality with a more favorable repair cost compared to new parts from an authorized dealer. This is a practical solution for:

• repairing a damaged door control panel,
• diagnosing central locking problems on the right side,
• restoring full door functionality after a collision or flooding.

More about the advantages of using original dismantled parts in cars of this brand can be found in the article: used Mercedes parts from original dismantling.

Integration with Other Mercedes Control Elements

The door lock switch works with other control elements in the door, such as window buttons and mirror adjustment controls, creating a cohesive driver or passenger control panel. Proper electrical and mechanical fit is crucial for:

• seamless communication with the comfort module,
• maintaining full functionality of safety systems,
• preserving original cabin ergonomics.

If you are planning a comprehensive repair or upgrade of the door control area in your Mercedes and need other parts from the same group, such as window buttons, mirror switches, or ignition switch components, check the available parts in the category Mercedes Switches, Control Elements, and Ignition Switches.

For users who are simultaneously servicing their braking system and considering the purchase of used components, the guide may be helpful: how to safely select used braking system components, describing best practices when choosing discs, calipers, and ABS systems in used parts stores.