Mercedes CLC CL203 Front Left Door Lock Latch Mechanism Actuator A2037200735

Mercedes CLC CL203 Front Left Door Lock Latch Mechanism Actuator is an original locking mechanism with a built-in actuator, designed for installation in the front left door of this model. This component belongs to the Doors and door panels group and ensures proper integration with the factory central locking system and the vehicle's electrical installation. This used component allows for an economical yet technically sound repair of the driver's door locking system.

Specifications and technical data

• SKU: rhd-A2037200735
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2037200735
• Substitutable numbers: A2037200735, A 203 720 07 35, ASZ
• Location on the vehicle: Front, Left
• Category: Doors & Door Skins

Purpose and function in the vehicle

The presented lock mechanism is dedicated to the front left door of the CLC CL203 body, ensuring a perfect fit with the door geometry, guides, and factory mounting points. The integrated actuator is responsible for automatic locking and unlocking, working in conjunction with the central locking system, remote control, and the mechanical door lock. This maintains full functionality for opening, closing, and securing the driver's area.

Construction and key technical features

The mechanism combines the mechanical part and the electrical actuator in a single housing. The locking assembly transfers force from the external and internal handles to the lock latch, while the electric actuator controls the bolt position based on signals from the comfort module. This solution ensures:

• stable door locking while driving and when parked,
• proper cooperation with the central locking system and alarm,
• compatibility with the factory electrical installation of the Mercedes CLC CL203.

Thanks to the design specified by the vehicle manufacturer, proper alignment with the door panel, window guides, and other components from the Doors and door panels group is maintained.

Benefits of using an original lock

Using an original front left door lock in a Mercedes CLC CL203 helps reduce the risk of issues with closing, play in the lock latch, or malfunctions of the central locking system. The main advantages include:

• factory fitment to the door and body structure,
• preservation of the original comfort system functionality,
• no need for modifications to mounts or the electrical wiring harness,
• consistency with other components of the vehicle's security system.

This used component allows for restoring the efficiency of the locking system at a lower cost than a new part, while maintaining a construction consistent with the manufacturer's design.

Installation area and service recommendations

The lock is designed for installation in the front left door, which requires removing the door trim, disconnecting the handle rods, and the electrical connector. It is recommended that the installation be performed by an experienced mechanic or automotive electrician due to the need for proper adjustment of the rods and verification of the actuator's operation after connection to the vehicle's electrical system. After installation, it is worth verifying:

• smooth opening and closing from both the internal and external handles,
• operation of the central locking system via remote and key,
• locking while driving (if the function is active in the vehicle).

Related components and additional information

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 panels, reinforcements, or complete door structures, check the available parts in the Mercedes Doors and door panels category.

When choosing a used door lock, it is worth consciously comparing factory solutions with replacements and new parts. It may be helpful to review the cost and durability comparison of different options available in the article Car parts – new or used? We compare costs, quality, and durability, which facilitates making a decision tailored to your budget and expectations.