Volkswagen Passat B7 Window Lifter Regulator Motor Rear Left N/S 3AA959703B

Volkswagen Passat B7 Window Lifter Regulator Motor Rear Left N/S is a component from the Window regulators and motors group, designed to control the rear left window in the Passat B7 body. This used module ensures factory-fit compatibility with the electrical system and the window lifting mechanism, facilitating an efficient and predictable repair of the window opening system.

Specifications and technical data

• SKU: 3AA959703B
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 3AA959703B
• Substitutable numbers: 3AA959703B, 3AA 959 703 B
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The offered window lifter with regulator motor is dedicated to the rear left body section of the Volkswagen Passat B7. It is responsible for the electric control of the window movement, working in conjunction with the factory door switch and the comfort system wiring. Thanks to its precise placement on the vehicle, the correct window guidance geometry is maintained, which reduces the risk of jamming and uneven closing.

Construction and technical characteristics

The component combines an electric drive and the control unit for the window lifting mechanism in a single housing. The OEM design ensures:

• compatibility with factory guides and door mounts,
• proper cooperation with the vehicle's electrical system,
• appropriate torque parameters for the rear left window.

As a result, installation is straightforward, without the need for wiring modifications or interference with the door structure.

Benefits of using an original Volkswagen solution

Using an original solution designed for the Passat B7 allows for maintaining the consistency of the entire comfort system. In practice, this means:

• stable operation of the window opening and closing functions from the driver's panel and the rear door button,
• proper cooperation with factory anti-pinch safety features (if present in the car's configuration),
• preservation of the manufacturer-intended response times and smoothness of window movement.

For the user, this translates into comfortable window operation and a reduction in the risk of recurring service interventions in this area.

Condition, installation, and practical application

The window lifter with regulator motor is offered as a used part, which allows for an economical repair of the window system while maintaining the original manufacturer's specifications. The component is intended for installation in the rear left part of the body, so it is worth verifying the vehicle side and model version before purchasing. Proper component selection reduces vehicle downtime and facilitates workshop operations.

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

Trouble-free operation and technical knowledge

A functional window lifting system is important not only for comfort but also for safety – especially in situations requiring quick vehicle closure or window defogging while driving. A properly selected and correctly installed lifter with a motor reduces mechanical stress on the guides and lowers the risk of overloading the electrical system.

For drivers interested in a broader context of operation and typical design problems in popular models, we recommend the guide article Faulty BMW E90 motors: check what can ruin your budget!, which shows how important informed selection and maintenance of key components are.

If you have doubts regarding the selection of elements from the secondary market, the material Used car parts: Myths and facts you need to know may also be helpful, explaining how to properly evaluate used components and what to look for when purchasing them.