Mercedes-Benz Vito W639 Front Right Door O/S Window Electric Lifter Motor

Mercedes-Benz Vito W639 Front Right Door O/S Window Electric Lifter Motor is a component from the Window regulators and motors group, designed to control the movement of the window in the front right door. A properly selected lifter ensures stable operation of the mechanism, smooth raising and lowering of the window, and correct functioning of the comfort system in your Mercedes.

Specifications and technical data

• SKU: A6397200546
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6397200546
• Substitutable numbers: A6397200546, A 639 720 05 46, EM
• Location on the vehicle: Front, Right
• Category: Window Motors & Regulators

Purpose and vehicle placement

The presented lifter is dedicated for installation in the front right door of the vehicle, in the area responsible for guiding and positioning the window. Placement in this zone requires precise matching to the door structure, which is why using the correct component is crucial for the proper operation of the entire window mechanism.

The sub-assembly works with the window control system, being responsible for transferring the drive to the rails and maintaining a stable position of the window while driving, when closing the door, and during window position changes.

Function in the window regulation system

The window lifter in the Mercedes-Benz Vito W639 works as a unit with the control motor and the door electrical system. Its task is to:

• ensure smooth upward and downward movement of the window,
• maintain proper window guidance in the rails,
• reduce window play and vibrations while driving,
• cooperate with window control comfort functions, if present in the vehicle.

A well-selected element from the Window regulators and motors category allows for restoring the correct operation of the mechanism in case of jamming, uneven operation, or complete lack of response of the window to commands from the switch.

Product characteristics and advantages of use

The offered lifter comes from a Mercedes brand vehicle, which helps maintain the correct geometry of the mounts and compatibility with the factory door system. Thanks to this, it is possible to restore the original window operation without the need for structural modifications.

The main benefits of using this component include:

• restoration of correct window movement after replacing a damaged mechanism,
• maintaining proper fit with other door components,
• reducing the risk of re-damage resulting from improper part matching,
• possibility of using existing mounting points and factory design solutions.

The condition described as used means that the component comes from an operated vehicle, which in practice allows for maintaining compliance with factory design solutions while reducing repair costs.

Installation and operational tips

When installing the window lifter in the front right door, it is recommended to pay attention to the correct positioning of the cable or mechanism arms (depending on the specific version), proper tightening of the mounting points, and correct seating of the window in the holders. Careful installation affects the lifespan of the entire system and reduces the risk of recurring faults.

After installation, it is worth checking the full range of window operation – from fully lowered to fully closed – observing the smoothness of movement and any friction or skipping noises. If necessary, adjust the position of the window or the mounts to ensure even guidance.

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

Technical support and additional information

When planning repairs in premium class vehicles, it is worth considering the specifics of individual models and typical faults of mechanical and electrical systems. A good supplement to knowledge about the operation of premium segment cars can be an article describing critical power units in another popular model, which shows how important prevention and conscious selection of parts are. You can find more on this topic in the material: Emergency BMW E90 engines: check what can ruin your budget!.