Ford B-Max Mk1 Window Regulator Motor Electrical Front Left N/S AV11-14A389-L4

Ford B-Max Mk1 Window Regulator Motor Electrical Front Left N/S is a factory-original component from the Window regulators and motors group, designed to operate the electric window opening and closing mechanism on the driver's side. It is responsible for the precise drive of the window mechanism, ensuring smooth operation and proper integration with the vehicle's electrical system.

Specifications and technical data

• SKU: AV11-14A389-L4
• Mark: Ford
• Condition: Used
• OEM Part Number: AV11-14A389-L4
• Substitutable numbers: AV11-14A389-L4, AV1114A389L4
• Location on the vehicle: Front, Left
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented window regulator motor is designed for installation in the front left door of the Ford B-Max, on the driver's side. Its task is to drive the window lifting and lowering mechanism while maintaining stable operating speed and appropriate torque. As a result, the electric window control system reacts predictably to signals from the door switches or the central panel. The positioning in the front – left side area means that the component works with the main window control system, which is important for both user comfort and driving safety.

Construction and technical characteristics

The window regulator motor in the Ford B-Max is an electrical assembly adapted for operation within the door, where it is exposed to variable operating conditions (moisture, vibrations, temperature changes). The housing and drive unit have been developed to:

• ensure stable power transmission to the window regulator mechanism,
• maintain appropriate operating standards (reduction of noise and vibrations),
• preserve compatibility with the factory Ford electrical harness,
• enable correct mounting in the original installation points. As an item from the Window regulators and motors category, it works with the window control system, including door switches and potential comfort closing functions, if provided in the specific vehicle configuration.

Benefits of using an original motor

Using an original window regulator motor in the Ford B-Max allows for maintaining the factory operating parameters of the system. Key advantages include:

• Proper fit for the driver's door – compliance with the geometry of the mounts and the window mechanism guidance.
• Electrical compatibility – correct cooperation with the vehicle's installation and comfort control modules.
• Stable operation under typical operating conditions, without the need for adaptation or modifications to the installation.
• The ability to restore full functionality of the electric window on the driver's side after the failure of the previous drive. The used component allows for an economical repair of the window system while maintaining the manufacturer's original specifications, which is particularly important for vehicles used on a daily basis.

Selection, installation, and practical aspects

When selecting a window regulator motor for the Ford B-Max, it is crucial to match it to the specific location on the vehicle – in this case, the front left door. Proper selection ensures:

• correct connection to the regulator mechanism,
• compliance with factory electrical connectors,
• trouble-free installation in the original mounting points. The installation process itself requires removing the door trim, disconnecting the old drive, and connecting the new motor while following the correct sequence of service steps. It is recommended to use service documentation or the support of an experienced mechanic to avoid damaging the electrical harness or window guides.

Repair expansion and additional materials

If you are planning a comprehensive repair or upgrade of the door and window area in your Ford and need other components from the same group, such as drives, control modules, or complete regulator mechanisms, check the available parts in the Ford window regulators and motors category. When working with electrical components and drives, it is worth knowing the principles of selecting components by manufacturer numbers and by VIN – these are discussed in detail in the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which also covers issues of verifying the condition of used subassemblies and optimizing repair costs.