Keyless Go Module Mercedes C118 W177 W247 ECU Entry Control Unit A1679004416

Keyless Go Module Mercedes C118 W177 W247 ECU Entry Control Unit is an advanced electronic control module responsible for operating the vehicle's keyless entry and start system. As part of the Electronic control modules and controllers group, it works with the car's electrical system to ensure convenient unlocking, locking, and start authorization. This used controller allows for an economical yet technically sound repair of the comfort system in Mercedes vehicles.

Specifications and technical data

• SKU: A1679004416
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1679004416
• Substitutable numbers: A1679004416, A 167 900 44 16
• Category: ECUs & Computer Modules

Purpose and function of the module

The presented Keyless Go module is an electronic control unit for the keyless entry system in selected Mercedes models from the C118, W177, and W247 families. It is responsible for communication between the key, comfort antennas, locks, and other controllers in the vehicle, coordinating the process of key recognition, vehicle unlocking, and engine start authorization.

As an ECU Entry Control Unit, it works with the vehicle's data bus, integrating with other electronic systems. A correctly selected and configured module allows for the restoration of full Keyless Go system functionality after a factory component failure.

Benefits of using a pre-owned electronic module

Using a module from the Electronic control modules and controllers group is a solution that significantly reduces repair costs compared to purchasing a new unit. At the same time, the original electrical architecture of the vehicle is maintained, which facilitates integration with the existing installation.

• Cost savings while maintaining the original controller design.
• Possibility of matching by OEM number and interchangeable numbers (information in the technical specification).
• Better compatibility with the factory wiring harness and other modules in the vehicle.

To consciously select a controller and avoid hardware or software compatibility issues, it is worth using the practical tips described in the Global Parts guide article: Used automotive electronics – how to safely choose ECU modules and sensors.

Integration with the vehicle system and installation issues

The Keyless Go module works with other comfort and security controllers, so when replacing it, it is crucial to maintain consistency in markings and hardware versions. In many cases, matching or adaptation using appropriate diagnostic software is required for the module to be correctly recognized in the vehicle's network.

Before installation, it is recommended to:

• verify compatibility by OEM part number and reference numbers (details in the specification section),
• check the vehicle equipment configuration (presence of the Keyless Go system, key type, body version),
• plan for potential adaptation or programming at a specialized service center.

This approach minimizes the risk of communication errors in the CAN network and problems with start authorization after replacing the controller.

Product condition and service application

The offered module is a used component, which makes it an attractive service solution for repairs of the keyless entry system in Mercedes vehicles. This type of part is suitable both for replacing a damaged controller and in diagnostic situations where it is necessary to substitute another unit to verify a fault.

In workshop practice, used electronic modules are often used for:

• restoring the operation of the Keyless Go system after a factory controller failure,
• reducing repair costs while maintaining original build quality,
• comparative tests during advanced comfort system diagnostics.

Related modules and comfort system expansion

The keyless entry system works with other comfort and security controllers, so for larger repairs, it is worth considering a comprehensive approach to vehicle electronics. 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 central units, check the available parts in the Electronic control modules and controllers Mercedes category.