Volkswagen Passat B8 Rear Door Window Regulator Motor Left N/S 5Q4959802D

Volkswagen Passat B8 Rear Door Window Regulator Motor Left N/S is a precision component from the Window regulators and motors group, designed to operate the window lifting mechanism in the rear left door. It ensures stable system operation, correct window guidance, and repeatable performance during every opening and closing cycle. This solution is dedicated to users who expect efficient electric window operation after replacing a worn-out component.

Specifications and technical data

• SKU: 5Q4959802D
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 5Q4959802D
• Substitutable numbers: 5Q4959802D, 5Q4 959 802 D
• Location on the vehicle: Rear, Left
• Part type: Window Motor
• Category: Window Motors & Regulators

Purpose and vehicle placement

The presented window regulator motor operates in the rear left door area, responsible for driving the window lifting and lowering mechanism. Its placement in the rear left zone allows for precise alignment with factory mounts and seamless integration with the original wiring harness and cabin controls. As a result, this component can be used as a direct replacement for the factory-installed motor in the Volkswagen Passat B8 model.

Function and performance parameters

The window regulator motor is responsible for converting the electrical signal from the switch into the mechanical movement of the window lifting mechanism. A correctly selected component:

• ensures smooth raising and lowering of the window in the rear left door,
• maintains stable operating speed throughout the full range of motion,
• reduces the risk of jamming and overloading the guide mechanism,
• works in harmony with the factory comfort control system.

By maintaining a design consistent with the manufacturer's specifications, the motor allows for the restoration of proper window system functionality without the need for modifications to the electrical installation.

Characteristics of the used component

The offered window regulator motor is a used component, meaning it has been removed from a vehicle and was previously in service. This type of component is a good choice in situations where the priority is to reduce repair costs while maintaining structural compatibility with the factory solution. A used component allows for restoring the efficiency of the vehicle's window system without the need to use aftermarket replacements with uncertain parameters.

Benefits of using an original window regulator motor

Using an original window regulator motor in a Volkswagen Passat B8 offers a range of practical benefits:

• Factory fitment – compatibility with the door structure and mounts, with no modifications required.
• Proper cooperation with vehicle electronics – compatibility with window control systems and comfort modules.
• Stable mechanism operation – reduced risk of improper window closing or jamming.

For the user, this means predictable window system operation and the ability to efficiently replace a damaged component with one that meets factory specifications.

Volkswagen window regulators and motors – expansion and door zone service

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

Technical support and operational knowledge

When planning repairs within the electrical and drive systems of a car, it is also worth considering the condition of the engine unit and potential service costs. For comparison with other popular models and a better understanding of how failures can impact your maintenance budget, you can refer to our guide: BMW E90 faulty engines: check what can ruin your budget!.