Mercedes W204 W212 Door Lock Mechanism Actuator Front Left N/S A2047202535

Mercedes W204 W212 Door Lock Mechanism Actuator Front Left N/S is an original component from the Locks and latches group, designed for installation in the front left door of the vehicle. It ensures the proper operation of the central locking system, smooth locking and unlocking of the door, which directly affects the comfort and safety of everyday use of your Mercedes vehicle.

Specifications and technical data

• SKU: RHD-A2047202535-4
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2047202535
• Substitutable numbers: A2047202535, A 204 720 25 35
• Location on the vehicle: Front, Left
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The presented mechanism is dedicated for installation in the front left door, i.e., on the driver's side in right-hand drive vehicles. It is responsible for interacting with the central locking system, the external and internal door handles, and the electrical installation controlling the locking. A properly functioning lock eliminates problems with doors not closing, opening on their own, or failing to respond to the remote control signal.

This component is particularly important in vehicles used intensively, where the door locking system is exposed to frequent opening and closing cycles. Replacing a worn-out mechanism with a functional unit allows you to restore the factory functionality of the locking system on the driver's side.

Construction and technical characteristics

The front left door lock mechanism in the Mercedes W204 / W212 is an assembly of mechanical and electrical components that work with the vehicle's electrical system. The following are integrated into one compact housing:

• a mechanical part responsible for locking and unlocking the door,
• elements interacting with the door handle rods,
• an electrical module controlling the operation of the lock actuator.

Such a design facilitates installation and service – the complete assembly is replaced, which reduces the risk of further failures resulting from partially worn components. Original origin from the Mercedes group helps maintain proper fitment with the door panel, guides, and the electrical wiring harness.

Condition, fitment, and service application

The offered mechanism comes from the used parts segment, making it an attractive service solution for drivers looking for a reasonable compromise between repair cost and quality. The component is intended for direct installation in place of the factory lock, without the need for any modifications to the door structure.

In practice, this means that by following the correct installation procedure, you can:

• restore the proper operation of the central locking system on the driver's side,
• eliminate problems with the door jamming or failing to respond to the key/remote,
• maintain the integrity of the vehicle's safety system in the area of body locking.

Benefits of using the original mechanism

Choosing the original lock mechanism for the Mercedes W204 / W212 allows you to maintain compliance with the manufacturer's factory standards. Precise fitment to the door structure reduces the risk of leaks, improper closing, or excessive play in the handles. Using a dedicated component also facilitates the diagnosis of any potential faults in the future, as the operating parameters of the lock are consistent with the assumptions of the vehicle's comfort system.

If you are planning a comprehensive repair of the locking system in your Mercedes, it is also worth checking other elements from the body locking group available in the Locks and latches category to restore full system functionality in one service stage.

Additional information and selection support

Before purchasing, it is recommended to compare the door configuration and lock type with the currently installed element, which will help avoid installation errors. In case of doubts regarding the selection of a used part for a specific body version or vehicle year, using guide materials may be helpful. For those who want to better understand how to effectively choose original used components, we have prepared a practical guide: The best used car parts – a guide to the most frequently chosen original parts.

By using this front left door lock mechanism, you can restore the locking function on the driver's side in an orderly and technically correct manner, maintaining the operating culture of the locking system characteristic of the Mercedes brand and consistency with other elements of the comfort system.