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

Left Front Door Lock Mercedes W204 / W212 is an original mechanism with an actuator designed for the front left door of Mercedes C-Class and E-Class vehicles. This component from the doors and door panels category ensures proper operation of the central locking system, secure locking, and correct interaction with the vehicle's electronics. It's a practical solution for repairing a damaged lock or restoring full functionality to the driver's door.

Specifications and technical data

• SKU: rhd-A2047203735-2
• 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: Doors & Door Skins

Vehicle Application and Placement

The presented lock mechanism is designed for installation in the front – left side of the vehicle, i.e., the driver's door in left-hand drive versions. The lock's construction is adapted to the factory locking system in Mercedes W204 and W212 models, ensuring full compatibility with the electrical system and factory comfort controllers.

Placement in the vehicle is crucial when selecting parts – the front left door lock differs in construction from the locks on other doors. Therefore, using a dedicated component minimizes the risk of installation and functional problems.

Mechanism Construction and Actuator Function

The mechanism combines a mechanical part responsible for external and internal locking with an integrated actuator that works with the central locking system, all within a single housing. Thanks to this, the lock:

• transmits movement from the external and internal door handles to the door latch,
• works with the central locking system, enabling remote opening and closing,
• ensures proper latch positioning relative to the body pillar,
• maintains a stable connection with the rods and cables within the door.

The original lock design is tailored to the door geometry of Mercedes W204 and W212 models, facilitating installation in factory mounting points and ensuring proper operation of the door handles and lock cylinder (if present in the specific equipment configuration).

Benefits of Using an Original Door Lock

Using a factory-original lock mechanism with an actuator in a Mercedes offers a range of practical operational benefits:

• Full integration with vehicle electronics – proper cooperation with the comfort module, central locking system, and any alarm.
• Precise fit with the door structure – no need for modifications, drilling, or adjusting mounting elements.
• Stable operation over extended use – the mechanism is designed for specific W204 and W212 models.
• Ability to restore factory functionality to the driver's door after a lock or actuator failure.

This solution is particularly recommended for issues such as doors not closing properly, the central locking system not responding on one side, or incorrect locking while driving.

Part Condition and Service Application

The offered front left door lock is a used part, sourced from vehicle dismantling. This type of part is a sensible choice for service repairs when maintaining original manufacturing quality while optimizing costs is important. In many cases, a used OEM lock offers a better fit than aftermarket replacements with universal designs.

Before installation, a standard check of the door's electrical system and proper adjustment of rods and cables are recommended to fully utilize the mechanism's capabilities and avoid repeated upholstery removal.

Mercedes Doors and Door Panels – Selecting the Right Components

If you are looking for other components from the Mercedes doors and door panels category, such as locks, hinges, or complete door wings, check out our dedicated offer: Mercedes doors and door panels. This will help you more easily select compatible body components for your model.

To compare the characteristics of sporty car versions with standard variants and to better understand the differences in drive and chassis construction, you can read the article about RS models: Audi RS vs. Other Models – What's Under the Hood and Chassis?. This is a good addition to your knowledge when planning more advanced modifications or repairs.