Ford Focus Mk3 Keyless Entry Control Module ECU Unit AV6N-19G481-AG

Ford Focus Mk3 Keyless Entry Control Module ECU Unit is an original component from the Electronic control modules and controllers group, responsible for managing the vehicle's keyless entry and start system. This solution allows for the restoration of full functionality of the factory comfort system, maintaining compatibility with Ford electronics and stable operation of security systems.

Specifications and technical data

• SKU: AV6N-19G481-AG
• Mark: Ford
• Condition: Used
• OEM Part Number: AV6N-19G481-AG
• Substitutable numbers: AV6N-19G481-AG, AV6N19G481AG, AV6N-19G481-AM, AV6N19G481AM, 1829420
• Category: ECUs & Computer Modules

Purpose and function of the module

The presented module was designed by Ford as a central component managing the keyless entry function in the Focus Mk3 model. It is responsible for communication between the key, system antennas, locks, and the ignition system, making it possible to open the vehicle and start the engine without the need to use a traditional key in the ignition. As a part from the Electronic control modules and controllers category, the module works with other controllers in the vehicle via communication buses, ensuring consistent operation of comfort and security systems. Replacing a faulty controller with a functional OEM part helps avoid issues with key recognition, communication errors, or random ignition blocking.

Advantages of using an original Ford module

Using a factory keyless entry control module offers a number of technical benefits:

• maintaining full compatibility with the electrical installation and electronics architecture of the Ford Focus Mk3,
• proper cooperation with factory keys and the immobilizer system,
• stable operation of the keyless system in various operating conditions,
• possibility of diagnostics and adaptation using standard Ford service tools. For workshops and users, this means easier configuration, predictable system behavior, and reduced risk of communication problems between controllers. The original electronic module also ensures greater certainty of compatibility with the vehicle's current software.

Product characteristics and condition

The offered item comes from the group of original Ford components and is classified as a used electronic module. Such components are a popular choice for comfort system repairs because they allow for a significant cost reduction compared to new parts, while maintaining factory design and performance parameters. The module should be treated as a component requiring standard installation procedures and potential adaptation in the vehicle (programming, key coding – in accordance with Ford service procedures). This makes it possible to restore full functionality of the keyless system after the failure of the original controller or its mechanical damage or flooding.

Application in service practice

Replacing the keyless entry control module is a typical operation in the case of:

• lack of vehicle response to the proximity key,
• problems with start authorization using the start/stop button,
• communication errors saved in the comfort controller memory,
• damage after flooding or electrical surges in the installation. For workshops specializing in automotive electronics, such a module is a practical solution allowing for quick and economical repair, without the need for interfering with the installation or using replacement solutions of uncertain quality. OEM Electronic control modules and controllers are also better supported by diagnostic software, which facilitates configuration after installation.

System expansion and related components

If you are planning a comprehensive repair or upgrade of the electronic comfort zone in your Ford and need other elements from the same group, such as comfort controllers, body modules, or security system controllers, check the available parts in the Ford electronic control modules and controllers category. When selecting a used controller, it is worth paying attention to the compatibility of markings, software versions, and adaptation procedures. Practical tips on choosing and installing used automotive electronics – including controllers, comfort modules, and parking sensors – can be found in the article A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which will help you consciously plan your repair and avoid common mistakes.