Door Lock Mercedes ML W166 C117 W204 Rear Right O/S Catch Actuator A2047303635

Door Lock Mercedes ML W166 C117 W204 Rear Right O/S Catch Actuator is an original locking mechanism designed for installation in the rear right section of the vehicle body. This component is responsible for secure closing, locking, and unlocking of the door, working in conjunction with the factory electrical installation and central locking system. Thanks to its design, which complies with the manufacturer's standards, it ensures proper operation of the actuator and lock mechanics during daily use.

Specifications and technical data

• SKU: A2047303635-3
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2047303635
• Substitutable numbers: A2047303635, A 204 730 36 35, KZ
• Location on the vehicle: Rear, Right
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The presented lock is dedicated for installation on the rear right door, on the offside of the vehicle. It is responsible for the mechanical latching of the door panel and transmitting movement from the handle and actuator to the locking latches. In Mercedes ML W166, C117, and W204 vehicles, this component works with the factory central locking system, ensuring consistent operation with the other locks in the car.

The placement on the vehicle is important both in terms of mechanical fitment and the correct operation of the electric actuator. Using the correct lock eliminates issues with improper closing, lack of response to the remote control, or incorrect door locking operation.

Construction and integration with the vehicle's electrical system

The mechanism combines a mechanical part responsible for latching and an electrical part acting as a door lock actuator. The design is prepared to work with the factory Mercedes wiring harness, which facilitates installation and reduces the need for system modifications. The lock handles the loads resulting from frequent opening and closing of the door, which is why its proper operation has a direct impact on the comfort of using the vehicle.

Properly designed mounting points allow for stable attachment of the lock to the door structure, and the integrated actuator allows for smooth control via the remote, the button inside the cabin, and the key.

Condition, fitment, and service application

The offered item comes from a Mercedes vehicle and belongs to the Locks and Latches group. As a used component, it represents an attractive service solution for users who want to restore the efficiency of the locking system without the need to invest in a new part. Proper selection of the lock for the specific body version and mounting side is crucial for maintaining full door functionality.

In practice, replacing the lock is recommended in situations where symptoms appear such as: no response to the central locking, problems with opening or closing the door, intermittent jamming of the mechanism, or incorrect interaction with the vehicle's electronics. Using an original lock from the same model family reduces the risk of incompatibility.

Benefits of using an original lock

Using a factory locking mechanism in a Mercedes ML W166, C117, or W204 ensures:

• consistent operation with the existing central locking system and vehicle electronics,
• proper fitment to the rear right door structure,
• stable operation of the actuator and lock mechanics in daily use,
• reduction of the risk of problems with closing and locking the rear passenger door.

For users planning more extensive work on the locking system or other body components, it is worth considering other products from the group, available in the locks and latches for Mercedes category.

Technical support and service knowledge

Selecting the right door lock for a specific Mercedes model often goes hand in hand with other service work – from door adjustment to mechanical and electrical system repairs. For more advanced vehicle work, technical materials and service guides may be helpful, such as practical tips on Mercedes operation and repair, as well as – if you are also upgrading the powertrain – a guide on refreshing the OM642 engine and restoring its performance. This makes it easier to plan comprehensive car maintenance, combining the lock replacement with other service tasks.