Audi A4 B8 Door Window Lifter Motor Control Unit Rear Right O/S 8K0959812

Audi A4 B8 Door Window Lifter Motor Control Unit Rear Right O/S is a factory-original module from the Window regulators and motors group, designed to operate the rear right window in your Audi. It ensures precise control of the window lifter operation, stable communication with the vehicle's electrical system, and consistency with the factory electronics architecture.

Specifications and technical data

• SKU: 8K0959812
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0959812
• Substitutable numbers: 8K0959812, 8K0 959 812
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and function of the control unit

The presented control unit is the component responsible for controlling the window lifter motor in the rear right door. The module manages the direction and duration of the drive operation, responds to signals from the control buttons, and cooperates with other comfort systems in the vehicle.

Thanks to its dedicated placement in the Rear, Right area, the module is matched to a specific side of the body, which facilitates installation and minimizes the risk of installation errors.

Advantages of using an original Audi control unit

Choosing an original control unit for the Audi A4 B8 allows you to maintain consistency with the factory electrical installation and the logic of the window system. The module is designed to operate in demanding conditions, taking into account mechanical loads and temperature changes within the vehicle door.

Key benefits include:

• maintaining factory window lifter operating parameters,
• proper cooperation with the comfort system and electrical protections,
• reducing the risk of communication errors in the vehicle network,
• easier diagnostics if service is required.

Installation and operational characteristics

The control unit is designed for installation in the rear right door, in the location provided by the vehicle manufacturer. As a result, the installation is orderly, maintaining original wiring routing and mounting points.

As an element from the Window regulators and motors category, the module works directly with the lifter motor, which is why its correct selection is important for the smoothness of the window movement, protection of the drive against overload, and daily comfort of use.

Product condition and practical application

The offered control unit is a used part, which in practice means a favorable cost-to-functionality ratio while maintaining the original manufacturer's specifications. Such modules are a popular choice for repairs following door electronics failure, window operation problems, or mechanical damage to the installation.

Before installation, it is recommended to perform a standard verification of the vehicle's electrical system and the correctness of connections to ensure stable system operation and avoid secondary faults resulting from damaged wiring or connectors.

Part selection by numbers and technical support

When selecting a control unit for a specific version of the Audi A4 B8, it is worth using the manufacturer's markings and vehicle data to ensure full compatibility with the car's equipment. In case of doubt, it is helpful to compare the markings on the module housing and consult a diagnostician or automotive electrician.

For those interested in a broader approach to purchasing secondary market parts, including electronic components, an expert guide describing procedures for selection by VIN and OEM may be useful, available in the article Why it is worth buying used gearboxes and engines – facts instead of myths.

If you are planning a comprehensive repair or modernization of the door and window area in your Audi and need other elements from the same group, such as control modules, lifter motors, or additional window system components, check the available parts in the Audi Window regulators and motors category.