Mercedes C118 W177 W247 Keyless Go Module ECU Entry Control Unit A1679007012

Mercedes C118 W177 W247 Keyless Go Module ECU Entry Control Unit is an advanced component from the Electronic control modules and controllers group, responsible for operating the keyless entry system in selected Mercedes models. The original control unit ensures consistency with the vehicle's factory electronics, which translates into stable operation of the comfort access and engine start system.

Specifications and technical data

• SKU: A1679007012
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1679007012
• Substitutable numbers: A1679007012, A 167 900 70 12
• Category: ECUs & Computer Modules

Function and role of the Keyless ECU module

The presented control unit is responsible for processing signals from the key and the keyless entry system antennas, working in conjunction with other electronic units in the vehicle. A correctly selected Keyless ECU module allows for maintaining full functionality of the comfort opening, closing, and start authorization system, without the need for interfering with the vehicle's wiring.

Thanks to the use of an original Mercedes solution, the module maintains compatibility with the CAN network architecture and the vehicle's security logic, which is crucial during diagnostics, coding, and adaptation at a service center.

Benefits of using an original control module

Choosing an original controller from the Electronic control modules and controllers group helps reduce the risk of communication issues between ECU units and minimizes the occurrence of errors in the fault memory. This is particularly important in modern Mercedes models, where many comfort and safety systems are tightly integrated.

A used OEM component is also a reasonable compromise between cost and quality – you retain the factory design and operating parameters while optimizing the budget for repairs or vehicle upgrades.

Condition, selection, and installation

The module is offered in a used condition, which means that a standard diagnostic procedure and verification of compatibility with the specific vehicle configuration are recommended before installation. In practice, installation involves correctly connecting the plugs and performing the appropriate programming or adaptation procedures, depending on the requirements of the given model.

When selecting a controller, it is worth paying attention to compatibility with the vehicle platform and additional equipment to maintain full functionality of the Keyless system and avoid conflicts with other control units.

Application in service and upgrades

This type of Keyless ECU module is particularly useful for:

• repairs following a keyless system failure,
• replacing a damaged control unit with a functional OEM component,
• upgrade work when the vehicle is being retrofitted with a comfort access system compatible with the factory Mercedes architecture.

Using an original controller facilitates the work of workshops specializing in automotive electronics, as it allows for the use of standard service procedures and factory diagnostic tools.

If you are planning a comprehensive repair or upgrade of the comfort electronics area in your Mercedes and need other components from the same group, such as comfort controllers, door modules, or body control units, check the available parts in the Mercedes electronic control modules and controllers category.

Technical support and additional information

When working with advanced automotive electronics, such as Keyless modules or multimedia units, it is worth using reliable sources of knowledge about original components and their impact on the car's character. A broader context on the use of OEM parts in premium vehicles can be found in the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which shows how properly selected modules and sub-assemblies allow for maintaining the consistency of electronic systems and the original properties of the vehicle.