Ford Focus Mk2 Side Seat Crash Air Module N/S 4M51-A611D11-AE

Ford Focus Mk2 Side Seat Crash Air Module N/S is an element from the Electronic control modules and controllers group, responsible for active driver protection in the side seat area. Designed specifically for integration with the factory Ford safety system, it works with crash sensors and the SRS controller, ensuring fast and precise operation at a critical moment. This solution allows for the restoration of full airbag system functionality after post-accident repairs or interior upgrades.

Specifications and technical data

• SKU: 4M51-A611D11-AE
• Mark: Ford
• Condition: Used
• OEM Part Number: 4M51-A611D11-AE
• Substitutable numbers: 4M51-A611D11-AE, 4M51A611D11AE, 4M51-A611D11-AG, 4M51A611D11AG, 1724189
• Location on the vehicle: Left
• Part type: Central Timing Module
• Category: ECUs & Computer Modules

Purpose and function in the safety system

The described side seat airbag is intended for installation on the left side of the vehicle, within the structure of the driver's seat cushion or backrest, depending on the specific model configuration. It works with the central airbag controller, which, based on signals from side sensors, initiates its inflation in a fraction of a second, limiting the forces acting on the driver's torso and pelvis. As an element from the Electronic control modules and controllers category, the airbag is part of a larger, integrated passive safety system, including seat belt tensioners, crash sensors, and the SRS controller. A correctly selected and installed component helps avoid system errors (airbag warning light on the dashboard) and ensures predictable operation of the entire system.

Construction, integration, and compatibility

The side seat airbag was designed by Ford for precise fitment to the seat structure in the Focus Mk2 model. This means proper shaping of the cover, a correctly routed connector cable, and an optimized volume of the pyrotechnic charge, so that upon activation, the airbag deploys in a controlled manner within the zone intended by the manufacturer. The element works with the vehicle's factory electrical harness, using a dedicated SRS system connector. This makes it possible to maintain the original installation architecture without the need for modifications or adaptations, which is important for both safety and subsequent computer diagnostics.

Characteristics of the used element

The airbag is offered as a used part, sourced from dismantling, which allows for economical repair while maintaining the original manufacturer's specifications. Such components are frequently chosen by workshops specializing in post-accident repairs, where compliance with the factory system and cost control are both essential. In the case of safety elements, it is crucial that the installation is carried out by qualified personnel, in accordance with the vehicle manufacturer's procedures and the rules for working with pyrotechnic systems. This allows for maintaining the correct operating parameters of the system and avoiding irregularities in the airbag controller's operation.

Benefits of using an original seat airbag

Using an original side seat airbag in a Ford Focus Mk2 brings a number of practical benefits:

• maintaining the factory operating characteristics of the SRS system in the driver's side seat area,
• secure fit to the seat structure and upholstery, without mechanical installation issues,
• correct cooperation with the existing electrical harness and airbag controller,
• possibility of computer diagnostics in accordance with manufacturer procedures. For the user, this means restoring full functionality of the safety system while maintaining consistency with the vehicle's other electronic components.

Related modules and technical knowledge

In modern cars, such as the Ford Focus Mk2, passive safety elements are closely linked to other controllers and electronic modules. It is worth expanding your knowledge on the diagnostics and repair of control systems by using the experiences of structurally similar premium brands. For example, in an article describing iDrive systems and electronic modules in BMW 3 and 5 series, you will find practical tips on working with advanced vehicle electronics – more information can be found in the entry Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models. If you want to better understand how a wide selection of components from a single warehouse helps shorten repair time and reduce vehicle downtime at the workshop, the article No more waiting for weeks – how a wide assortment in one warehouse really shortens your car's downtime at the mechanic? will also be helpful, as it shows the practical advantages of using an extensive offer of used parts.

Expanding repairs within Ford electronic modules

If you are planning a comprehensive repair or upgrade of the safety and electronics zone in your Ford and need other elements from the same group, such as airbag controllers, comfort modules, or other electronic control units, check the available parts in the Electronic control modules and controllers Ford category.