Mercedes W204 W212 Front Left N/S Door Lock Mechanism Actuator A0997200735

Left front door lock for Mercedes W204 / W212 is an original locking mechanism with a built-in actuator, designed for installation in the front left door of vehicles in this series. This component from the locks and latches category ensures proper closing, locking, and unlocking of the door, maintaining the factory functionality of the central locking system and the comfort of daily use.

Specifications and technical data

• SKU: rhd-A0997200735
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2047203735
• Substitutable numbers: A2047203735, A 204 720 37 35, A0997200735, A 099 720 07 35
• Location on the vehicle: Front, Left
• Category: Exterior Locks & Lock Hardware

Purpose and Fitment for Mercedes W204 / W212

The presented lock mechanism is specifically designed for the front left door of Mercedes C-Class W204 and E-Class W212 models. Its placement on the vehicle is clearly defined as the front driver's side (left), which simplifies the selection of the correct part when repairing the locking system.

Thanks to its construction conforming to factory manufacturer standards, the lock integrates with the original electrical system, remote control, and interior buttons. This allows for full integration with the vehicle's central locking and security system without the need for wiring modifications.

Mechanism Construction and Actuator Function

The mechanism combines the mechanical part responsible for locking with the electrical part serving as the actuator within a single housing. This configuration ensures:

• consistent operation of the lock with the central locking system and alarm,
• stable door locking when closing via remote control or from the interior,
• proper unlocking when opening with the exterior and interior handles,
• maintenance of the factory anti-theft security level.

The original OEM construction translates to proper fitment with the door sheet metal, guides, and handles, minimizing the risk of play, rattling, or improper closing.

Benefits of Using an Original Door Lock

Choosing an original left front door lock for Mercedes allows you to maintain the parameters intended by the vehicle manufacturer. Key benefits include:

• Factory Compatibility – full compliance with the electronics, door harness, and comfort modules in Mercedes W204 and W212.
• Correct Central Locking Operation – stable locking and unlocking without delays, jamming, or the need for multiple remote presses.
• Proper Mechanical Fitment – correct positioning of latches and rods, ensuring secure door closing and no need for handle adjustments.
• Integration with Security System – maintaining the door lock function while driving and cooperation with the factory alarm.

Condition, Verification, and Service Application

This part is a used component and is offered as a used left front door lock for Mercedes, providing a cost-effective service solution for operational repairs. This type of part is particularly useful in situations where there are problems with the central locking, no actuator response, automatic locking, or difficulties opening the driver's side door.

Before installation, a standard service procedure is recommended: checking the door harness, electrical connectors, and the correct adjustment of the handle rods. A properly selected and installed lock restores the full functionality of the locking system, improving the daily comfort of using the vehicle.

Other Mercedes Locks and Latches and Knowledge about OEM Parts

If you are looking for other Mercedes locks and latches for your car, check out the Mercedes locks and latches available in our store to select the appropriate mechanism for other doors or the trunk lid.

Want to better understand why original used parts are a sensible choice for repairs? Read the article about the quality and safety of used OEM parts in cars, where we explain how to combine savings with maintaining a high level of vehicle safety and reliability.