Audi A4 B9 Front Door Window Regulator Control Motor Left N/S 8W0959801

Audi A4 B9 Front Door Window Regulator Control Motor Left N/S is an original component from the Window regulators and motors group, designed for precise operation of the driver's side window in the Audi A4 B9 generation model. The used motor ensures factory-fit, stable operation of the window lifting mechanism, and maintains full functionality of the electric controls.

Specifications and technical data

• SKU: 8W0959801
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0959801
• Substitutable numbers: 8W0959801, 8W0 959 801
• Location on the vehicle: Front, Left
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented motor is responsible for driving the window lifting and lowering mechanism on the driver's side, in the front part of the body. Its placement in the front – left zone allows for direct integration with the factory window controls in the driver's door, which translates into ease of use and proper cooperation with the vehicle's electrical system.

Thanks to a design consistent with the solutions used by Audi, the component maintains the appropriate operating characteristics, correct window movement speed, and compatibility with the system's factory safety features.

Construction and technical fitment

The window regulator motor in the Audi A4 B9 is integrated with the window control system, which enables:

• stable torque transmission to the lifting mechanism,
• proper cooperation with the factory door wiring,
• maintenance of operating parameters specified by the vehicle manufacturer.

As an element from the Window regulators and motors category, it has been designed to work in variable operating conditions inside the door – when exposed to vibrations, temperature changes, and humidity. The used component allows for an economical, yet technically correct repair of the window system on the driver's side.

Benefits of using an original motor

Using a dedicated window regulator motor in the Audi A4 B9 brings a number of practical benefits:

• Factory fitment – maintaining the correct position of mounts and electrical connectors facilitates installation and reduces the risk of compatibility issues.
• Consistency with vehicle electronics – proper cooperation with window control modules and the central comfort system.
• Restoration of full driver's window functionality – restoring smooth lifting and lowering of the window on the front left side.

This solution is particularly beneficial for repairs following a window drive failure, mechanism seizure, or issues with the operation of the electric controls in the driver's door.

Condition and service application

The offered item is in used condition, which allows for reducing repair costs while maintaining the manufacturer's original specifications. This type of motor is suitable both for standard replacement of a damaged window drive and for comprehensive service work within the driver's door, where maintaining compatibility with the factory equipment of the Audi A4 B9 is required.

Audi window regulators and motors – expansion and repairs

If you are planning a comprehensive repair or upgrade of the door and window area in your Audi and need other elements from the same group, such as passenger window drives, additional control motors, or lifting mechanism regulators, check the available parts in the Audi window regulators and motors category.

Service knowledge and operation

When working with electrical and drive systems in premium class cars, it is worth knowing the typical weak points of individual models. For example, in the case of other brands, such as BMW, certain engines may generate above-average service costs – you can find more on this topic in the article Troublesome BMW E90 engines: check what can ruin your budget!, which helps to better plan expenses related to car maintenance.