Mercedes-Benz W204 W207 W212 Front Right Door O/S Lock Latch Mechanism Actuator

Mercedes-Benz W204 W207 W212 Front Right Door O/S Lock Latch Mechanism Actuator is an original locking mechanism component designed for installation in the front right section of the vehicle body. Thanks to its factory design, it ensures proper cooperation with the central locking system, body electronics, and the exterior handle, guaranteeing secure closing and opening of the driver or passenger door. It is a practical solution for users who want to restore full door functionality without compromising on fitment.

Specifications and technical data

• SKU: rhd-A2077604340-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2077604340
• Substitutable numbers: A2047601034, A 204 760 10 34, A2047203635, A 204 720 36 35, BG
• Location on the vehicle: Front, Right
• Category: Door Handles

Purpose and function in the vehicle

The presented lock with actuator is a component of the door locking system in Mercedes C-Class, E-Class, as well as coupe and cabriolet versions, mounted in the front – right side of the body area. It is responsible for:

• mechanical locking and unlocking of the door upon a signal from the remote control or key cylinder,
• cooperation with the central locking system and the comfort module,
• transferring movement from the exterior and interior handle to the lock mechanism,
• monitoring the door closure status (signal to the vehicle's electrical system).

Thanks to its factory design, the lock maintains the correct mounting geometry and proper routing of cables and wires, which translates into stable operation of the entire door system.

Construction and technical compatibility

The mechanism combines the mechanical part and an integrated electric actuator in one housing, which facilitates installation and service. Using the original Mercedes design allows for:

• maintaining the factory level of locking security,
• proper interaction with the vehicle's electrical system,
• secure mounting within the door structure without modifications.

The component is intended for installation on the front right side, which is why it is particularly important to match the vehicle placement to the specific body version. In practice, this means that after correct selection according to the manufacturer's markings, the lock can be installed in place of the factory one without additional adaptations.

Benefits of using an original door lock

Choosing an original lock with an actuator for a Mercedes brings a number of practical operational benefits:

• Factory fitment – maintaining original mounting points and mechanism geometry, which facilitates installation and adjustment.
• Consistent operation with vehicle electronics – proper communication with the central locking, comfort module, and door electrical system.
• Stable locking – proper door closing, reduction of play and unwanted noises while driving.
• The ability to restore full door functionality after a failure of the factory mechanism.

The product belongs to the Door handles group, which means it is designed to work with external and internal door opening elements, ensuring consistent operation of the entire system.

Practical installation and operational tips

Before installation, it is recommended to verify the compatibility of the part with the vehicle based on the manufacturer's data and the placement on the vehicle. During installation, it is worth paying attention to:

• correct routing of handle cables and rods,
• secure connection of the actuator's electrical connectors,
• checking the lock operation before fully reassembling the door trim.

After installation, it is advisable to test the operation of the central locking system several times using the remote control and from inside the vehicle to ensure that the mechanism reacts smoothly and without delays.

Expanding the door system in Mercedes

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other components from the same group, such as exterior handles, interior handles, or additional locking mechanisms, check the available parts in the Mercedes door handles category.

For users interested in a broader approach to selecting used electrical and electronic components in a car, practical tips on verifying compatibility, manufacturer markings, and safe installation can be found in the guide: Used automotive electronics – modules and sensors in practice.