Mercedes W177 Saloon Trunk Switch Tailgate Boot Open Release Button A2479055403

Mercedes W177 Saloon Trunk Switch Tailgate Boot Open Release Button is an original component from the Switches, control elements and ignition locks group, designed to control the tailgate in Mercedes compact class models. This used component ensures factory-standard operation, correct signals for the electrical system, and consistency with other body modules, which translates into reliable and predictable trunk opening.

Specifications and technical data

• SKU: A2479055403
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2479055403
• Substitutable numbers: A2479055403, A 247 905 54 03
• Category: Switches & Controls

Purpose and function of the switch

The trunk release button in the W177 Saloon body type is responsible for generating a control signal to the comfort system or body module, which then initiates the unlocking of the tailgate latch. A correctly selected switch guarantees the proper operation of the electrical system, ensures safety of use, and maintains compatibility with the vehicle's factory software.

This element is particularly important in situations where the existing button has suffered mechanical wear, damage due to operation, or has stopped responding to input. Using an original switch allows for the restoration of full trunk opening functionality without interfering with the wiring harness or requiring additional system modifications.

Benefits of using an original Mercedes switch

Choosing an original trunk release switch for the Mercedes W177 Saloon provides several significant advantages from an operational and service perspective:

• preservation of the factory operating characteristics of the trunk control system,
• precise fitment to body mounts and trim elements,
• consistency with the vehicle's electrical system and control modules,
• reduction of the risk of communication errors within the vehicle network.

As a result, the installation process is straightforward, and the trunk control system regains stable operation. A used, original component also allows for optimized repair costs while maintaining the high quality of workmanship characteristic of the Mercedes brand.

Condition of the item and installation aspects

The offered switch comes from disassembly and is classified as a used original part, which in practice means it retains its factory construction and electrical parameters at a more favorable cost level than a new part. Before installation, standard system verification is recommended – checking the wiring harness, connectors, and grounding to rule out other potential causes of malfunctions.

The replacement process for the switch in most cases is limited to removing the trim element, disconnecting the plug, and seating the new component in the factory socket. This makes the repair relatively quick and does not require interference with the body structure or modifications to the electrical installation.

Cost optimization with used Mercedes parts

Using used, original control elements in premium vehicles allows for a significant reduction in service costs while maintaining a high level of comfort and functionality. For the Mercedes brand, it is particularly beneficial to use components from disassembly, which retain factory build quality and full compatibility with the vehicle's electronics. You can find more information on the conscious selection of such components in the article Used parts for Mercedes – original components from disassembly, which describes a practical approach to servicing cars of this brand.

Expanding the control system in your Mercedes

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