Mercedes W212 Door Lock Rear Left N/S Latch Mechanism A2047304335

Mercedes W212 Door Lock Rear Left N/S Latch Mechanism is a factory-original locking mechanism designed for installation in the rear left section of the vehicle body. This component from the Locks and Latches group is responsible for the precise locking and unlocking of the door, ensuring secure closure and proper integration with the vehicle's electrical system. Thanks to its design, which complies with the manufacturer's standards, it provides a functional service solution for owners of W212 generation Mercedes E-Class vehicles.

Specifications and technical data

• SKU: RHD-A2047304335-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2047304335
• Substitutable numbers: A2047304335, A 204 730 43 35, A2047302135, A 204 730 21 35
• Location on the vehicle: Rear, Left
• Part type: Door Lock
• Category: Exterior Locks & Lock Hardware

Purpose and vehicle placement

The presented lock mechanism has been designed to operate in the rear left door area, ensuring a perfect fit with the geometry of the door panel, guides, and linkages in this part of the body. Its placement in the rear axle zone on the driver's side (for left-hand drive versions) or passenger's side (for right-hand drive versions) allows for the direct replacement of a damaged lock without the need for any modifications to the door structure. The mechanism works with the factory opening and closing system, maintaining the correct locking sequence and responding accurately to signals from the remote control as well as the interior and exterior door handles. As a result, after installation, it is possible to restore full door functionality in terms of locking, latching, and vehicle security.

Technical and functional characteristics

The rear left door lock for the Mercedes W212 is an integrated mechanism combining mechanical parts with control elements, responsible for:

• locking and unlocking the door leaf in response to signals from the central locking system,
• cooperation with door handle linkages and the interior lock,
• maintaining a stable door position during driving and while parked,
• proper communication with the vehicle's electrical system (in accordance with the specific vehicle configuration). Thanks to its factory design, the mechanism maintains the correct mounting points, latch geometry, and compatibility with the original striker on the door pillar. This allows for installation in place of a worn or damaged lock without interfering with the bodywork or wiring harness.

Benefits of using an original lock

Using an original door lock in a Mercedes W212 translates into a number of practical advantages in daily operation:

• Stable central locking operation – proper locking of all door points in a single sequence.
• Perfect fit with the door – no play resulting from the inaccurate fitment of aftermarket replacements.
• Compatibility with factory comfort systems – maintaining the functions intended by the manufacturer for the rear left door pair.
• The ability to restore proper door closing after a collision, wear, or failure of the previous mechanism. The component from the Locks and Latches group is crucial for passive safety and vehicle comfort, which is why selecting it based on compatibility with the specific W212 body version is particularly important.

Condition, installation, and service recommendations

The offered lock is a used part, which in practice means it has been removed from a vehicle and verified for its suitability for further use. Before installation, a standard service procedure is recommended, including checking the door wiring harness, the condition of the linkages, and adjusting the door position relative to the pillar to fully utilize the mechanism's capabilities. When replacing, it is worth paying attention to:

• correct routing of cables and linkages inside the door,
• tightness of the seals around the lock,
• proper tightening of the mounting bolts in accordance with the manufacturer's recommendations,
• testing the central locking operation after installation (using the remote and the interior cabin button).

Expanding the scope of repairs and additional materials

If you are planning a comprehensive repair or upgrade of the door lock area in your Mercedes and need other components from the same group, such as locking mechanisms, cylinders, or strikers, check the available parts in the Mercedes Locks and Latches category. For users interested in deepening their knowledge about part selection, compatibility, and installation procedures in modern engines and forced induction systems, the Global Parts guide regarding the turbocharger and intercooler in the BMW B58 engine may be helpful – BMW B58 Code – checklist before purchasing a turbocharger and intercooler for the BMW 3 Series (G20). Although the description concerns a different brand, it presents a practical approach to verifying OEM numbers, matching by VIN, and planning repairs, which can be analogously applied when working with Mercedes components.