Audi Q7 4L Window Lifter Door Rear Left N/S Regulator Motor 4L0839461D

Audi Q7 4L Window Lifter Door Rear Left N/S Regulator Motor is a factory-original component from the Window regulators and motors group, designed for the rear left section of the vehicle body. It ensures smooth operation of the rear door window, restoring the proper functioning of the lifting and lowering system without the need for costly modifications to the installation.

Specifications and technical data

• SKU: 4L0839461D
• Mark: Audi
• Condition: Used
• OEM Part Number: 4L0839461D
• Substitutable numbers: 4L0839461D, 4L0 839 461 D
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented mechanism is dedicated to installation in the rear left door of the Audi Q7 4L generation model. It is responsible for the stable guidance of the window within the tracks and for working in conjunction with the drive unit, which translates into predictable, repeatable operation of the entire system.

Thanks to its precise fit to the door structure, this component allows for maintaining the factory geometry of the window movement, reducing the risk of jamming, play, or uneven closing. This is particularly important in the heavy, wide doors of an SUV, where mechanical loads are higher than in compact cars.

Construction and fitment for Audi Q7 4L

The Window regulator mechanism has been designed in accordance with the vehicle manufacturer's standards, which means maintaining original mounting points and compatibility with factory door equipment. This facilitates installation and allows for the use of existing technological holes and factory upholstery mounts.

Key design features of this solution include:

• dedicated placement in the rear left zone,
• maintenance of proper vertical window movement geometry,
• adaptation for use with the original drive from the Window regulators and motors group.

Such a fit reduces the need for additional adjustments after installation and promotes the maintenance of door tightness and proper seal operation.

Benefits of using an original mechanism

Using a component from the same design line as the factory Audi equipment allows for maintaining the consistency of the entire window system. For the user, this means:

• more predictable window control operation from the driver's and passengers' sides,
• reduced risk of overloading the electrical installation and window controllers,
• easier diagnostics in the event of potential future faults.

Original fitment also promotes the maintenance of appropriate door structure rigidity, which is significant for acoustic comfort inside the cabin as well as for the operation of the central locking and seals.

Condition and service application

The mechanism is offered as a used part, which represents a reasonable compromise between repair costs and maintaining the vehicle's original specifications. This type of solution is often chosen by professional service centers when the priority is matching a specific body version and equipment level while simultaneously limiting operating costs.

The component is suitable both for typical replacement after mechanical damage (e.g., snapped cables, seized guides) and for comprehensive door renovation on the rear left side when it is necessary to restore full functionality to the passenger windows.

Expansion of the window system and selection of other components

If you are planning a comprehensive repair or upgrade of the door and window area in your Audi and need other components from the same group, such as guides, drives, or complete lifting modules, check the available parts in the Audi Window regulators and motors category.

For users interested in a broader perspective on operating premium class cars and potential service costs, a guide dedicated to problematic engine units in another popular model may be helpful. More information can be found in the article Faulty BMW E90 engines: check what can ruin your budget!, which shows how to consciously approach car maintenance and repair planning.