Door Window Lifter Motor Audi A4 B8 A5 8T Control Unit Front Left N/S 8K0959801

Door Window Lifter Motor Audi A4 B8 A5 8T Control Unit Front Left N/S is a component from the Window regulators and motors category, designed to control the operation of the window in the front left door. It enables smooth raising and lowering of the window, ensuring convenient operation and proper functioning of the electrical system in the door. Thanks to the factory fitment for Audi models, installation is precise and predictable.

Specifications and technical data

• SKU: 8K0959801
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0959801
• Substitutable numbers: 8K0959801, 8K0 959 801
• Location on the vehicle: Front, Left
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented motor controls the window lifting mechanism in the front left door, operating within the vehicle's electrical system. It is responsible for:

• driving the window lifting and lowering mechanism,
• stable window operation throughout the full range of motion,
• cooperation with the control switch in the driver's or passenger's door,
• maintaining the appropriate speed and smoothness of the window movement.

Due to its proper fitment to the door structure, it minimizes the risk of jamming and uneven window operation, which is important for both driving comfort and body sealing.

Compatibility and fitment for Audi

The motor has been designed for use in Audi A4 B8 and Audi A5 8T models, in the front left door configuration. This means that:

• the mounting spacing is adapted to the factory mounting points,
• electrical connectors are prepared to work with the installation provided by the manufacturer,
• the housing design is matched to the space inside the door.

Such a solution allows for installation in a plug-and-play manner, without the need for harness modifications or interference with the door panel structure.

Performance characteristics and advantages

The front left door window motor is crucial for the daily operation of the vehicle. Its proper functioning affects:

• driver and passenger comfort during frequent opening and closing of the window,
• trouble-free use of ventilation and window defrosting functions,
• maintaining proper window pressure against the seals, which reduces noise and drafts.

Choosing a component from the Window regulators and motors category matched to a specific Audi model allows for reducing the risk of failures resulting from incorrect selection of spare parts.

Condition of the component and installation aspects

The offered motor is a used part, which in practice means a beneficial combination of functionality and an attractive price compared to new components. Before installation, it is recommended to perform a standard verification of the electrical system and the window lifting mechanism to ensure proper cooperation of all components.

During installation, it is worth paying attention to:

• proper routing of the wiring harness inside the door,
• careful tightening of the mounting points,
• checking the window operation in the full range after installation is complete.

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

For drivers interested in a broader context of operation and typical faults in popular models, it is worth reading the guide on BMW E90 power units: Emergency BMW E90 engines: check what can ruin your budget!.

If you want to better plan your car's service and learn which components most often require replacement, a practical guide will be helpful: TOP 10 most frequently replaced parts in your car.