Mercedes W177 Remote Key Radio Alarm Fob Button A1779055504

Mercedes W177 Remote Key Radio Alarm Fob Button is an original control element designed for the locking and ignition system of Mercedes vehicles. It belongs to the Switches, control elements and ignition locks group, making it a perfect fit for the factory electronics architecture and comfort systems of the car. The product is offered in a condition requiring repair or for parts, making it an attractive base for refurbishment or sourcing components.

Specifications and technical data

• SKU: A1779055504
• Mark: Mercedes (Genuine OE)
• Condition: For parts or not working
• OEM Part Number: A1779055504
• Substitutable numbers: A1779055504, A 177 905 55 04
• Category: Switches & Controls

Purpose and function of the remote key fob

The remote key fob for the Mercedes W177 series is responsible for remote control of the central locking system, operation of comfort functions, and interaction with the ignition switch or keyless entry system, depending on the vehicle configuration. As an element from the Switches, control elements and ignition locks group, it is an integral part of the electronic security system, communicating with body control modules and the immobilizer.

Due to its "for parts or not working" condition, the key fob can be used as:

• a source for the housing and mechanical components (buttons, casing, mechanical key blade),
• a base for professional refurbishment at a specialized automotive electronics service,
• a donor of components for repairing other key fobs in Mercedes vehicles.

Benefits of using an original Mercedes component

An original Mercedes remote fob ensures compatibility with the factory electrical installation and vehicle software, which facilitates the programming process and integration with existing comfort modules. For workshops and automotive electronics specialists, it represents a valuable source of parts, allowing for precise repair of other keys without the need to resort to replacements with uncertain parameters.

Using original components from dismantling is particularly beneficial in the case of newer Mercedes generations, where control systems are complex and hardware-software compatibility is crucial for the proper operation of the immobilizer system and comfort functions.

Application in service and refurbishment

Due to its technical condition, the remote key fob is best suited for professionals involved in:

• refurbishment of key and remote electronics,
• transferring functional modules to other housings,
• diagnostics and testing of locking control systems in Mercedes vehicles.

For professional workshops, this is a practical solution that allows for optimizing repair costs while maintaining original component quality. It also enables faster restoration of vehicle functionality without the need to wait for new parts.

Integration with other used Mercedes components

Choosing original control elements from dismantling fits well with the strategy of economical repair for premium class cars. If you want to better understand how to safely use used components in vehicles of this brand and how to combine them with other comfort systems, it is worth reading the article Used parts for Mercedes – original components from dismantling, which discusses the practical aspects of selecting and installing such elements.

For workshops that want to reduce vehicle downtime, access to a wide assortment in one place is also important – you can find more on this topic in the material how a wide assortment in one warehouse reduces car downtime at the mechanic, which has a direct impact on the effective use of elements such as keys and remote fobs.

Expanding the control system in a Mercedes

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

This approach allows you to build a coherent set of components where the remote key fob works in harmony with other control systems, ensuring the proper operation of comfort and safety systems in your car.