Mercedes W639 Sliding Door Lock Actuator Mechanism Rear Left N/S A6397330035

Mercedes W639 Sliding Door Lock Actuator Mechanism Rear Left N/S is a precision component from the Interior locks and latches group, designed for the rear left body area. It ensures secure locking of the sliding door, which translates into safe vehicle operation and stable performance of the opening and closing mechanism.

Specifications and technical data

• SKU: A6397330035
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6397330035
• Substitutable numbers: A6397330035, A 639 733 00 35, BG
• Location on the vehicle: Rear, Left
• Category: Interior Locks & Lock Hardware

Purpose and function in the vehicle

The presented lock actuator is dedicated to the sliding door on the left side in the rear part of the body. It is responsible for the automatic locking and unlocking of the door leaf, working in conjunction with the vehicle's electrical system and the central locking control unit. As a result, the driver receives a convenient, repeatable, and predictable way of operating the door, which is important both in daily use and during intensive operation of a commercial or passenger vehicle.

Construction and performance parameters

The lock actuator works in an integrated assembly with the locking mechanism, which reduces the number of mechanical connections and improves the reliability of the entire system. The design is adapted to the specific geometry of the sliding door in Mercedes W639 series models, allowing for proper cable routing and stable mounting at factory body points.

The placement in the rear left part of the vehicle requires proper matching of the housing shape and connector position, which is why using the correct lock actuator is crucial for maintaining proper door operation. The component has been designed to work with the factory control system without the need for any installation modifications.

Benefits of using an original Mercedes solution

Choosing a lock actuator dedicated to the Mercedes W639 allows for maintaining the structural integrity of the vehicle. Proper fitment to factory mounts and the electrical harness reduces the risk of play, leaks, or improper door closing. This, in turn, affects the acoustic comfort inside the vehicle and the proper functioning of safety systems that monitor the door closure status.

The element from the Interior locks and latches category in a version intended for a specific vehicle model facilitates service and diagnostics – the mechanic deals with a solution consistent with the manufacturer's specifications, which shortens assembly time and minimizes the risk of errors.

Characteristics of the used component

The offered lock actuator is a used part, which represents a reasonable compromise between repair costs and maintaining the vehicle's original specifications. This type of component, sourced from dismantling, allows for an economical replacement of a damaged lock while maintaining the proper standard of workmanship and compatibility with the factory system.

Choosing a used component is particularly beneficial for vehicles used intensively, where both reliability and long-term service cost optimization are important.

Ecology and economy of using used parts

Using used locks and latches is part of a modern approach to vehicle operation, where both economic and environmental aspects are important. Reusing functional components reduces waste and decreases the demand for new part production, which translates into lower raw material consumption.

If you want to learn more about the advantages of this approach and find out how conscious component selection affects the environment and the vehicle's operating budget, it is worth reading the article Eco-driving: discover the benefits of used car parts.

Expanding repairs within Mercedes locks and latches

If you are planning a comprehensive repair or upgrade of the door locking zone in your Mercedes and need other elements from the same group, such as locking mechanisms, cylinders, or additional control modules, check out the available parts in the Mercedes interior locks and latches category.