Door Lock Mercedes W177 W247 Latch Mechanism Actuator Rear Left N/S A0997303101

Door Lock Mercedes W177 W247 Latch Mechanism Actuator Rear Left N/S is an original component from the Locks and Latches category, designed for the rear left section of the vehicle body. It ensures precise locking and stable operation with the factory electrical installation, which translates into trouble-free operation of your Mercedes vehicle.

Specifications and technical data

• SKU: A0997303101-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0997303101
• Substitutable numbers: A0997303101, A 099 730 31 01, A 099 730 57 02, A0997305702
• Location on the vehicle: Rear, Left
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The presented door lock with actuator is dedicated for installation in the rear left part of the body, where it is responsible for mechanical locking and unlocking of the door in conjunction with the central locking system. The component works with the factory wiring harness and comfort control units, ensuring full integration with the vehicle's safety system and comfort functions. Placement in the rear zone of the body requires maintaining the appropriate geometry and operating force of the mechanism, which is why using an original lock with an actuator allows you to maintain the correct operating line of the handle, latch, and striker, without the need for additional modifications or adaptations.

Construction and performance parameters

The actuator integrated with the lock forms a compact module that transfers movement from the central locking system to the latching mechanism. This solution minimizes operating play and ensures repeatable performance during repeated door opening and closing cycles. The design provided by the vehicle manufacturer is optimized for:

• stable operation in varying temperatures and humidity,
• resistance to mechanical loads resulting from frequent use,
• correct cooperation with latch position and locking sensors. As a result, the door lock with actuator maintains consistency of operation with the central locking and security system, which is important for both comfort and vehicle protection.

Condition of the component and benefits of choosing a used part

The offered door lock with actuator is a used part, sourced from the dismantling of a Mercedes vehicle. Such components retain their factory specifications while allowing for significant repair cost savings compared to purchasing a new module. In practice, this means the ability to restore full functionality to the rear left door while maintaining original manufacturing quality and fitment for the specific body generation. Choosing an original lock with an actuator from the secondary market is particularly beneficial where compatibility with the existing installation and maintaining factory operating parameters of the mechanism are important, without the risks typical of random aftermarket replacements.

Why it is worth using an original Mercedes door lock

Using an original component in the rear left part of the body allows you to avoid problems with improper closing, incomplete locking, or errors in the comfort system. The module has been designed specifically for the door construction of the given vehicle generation, which translates into:

• reliable closing and unlocking using the remote control or internal handle,
• correct cooperation with the child safety lock and safety functions,
• maintenance of the factory level of soundproofing and door fitment. For the user, this means stable, predictable operation of the mechanism and no need for additional adjustments after installation, provided that the installation is performed in accordance with the service procedure.

Expansion of upgrades within door locks

If you are planning a comprehensive repair or upgrade of the door lock zone in your Mercedes and need other elements from the same group, such as latching mechanisms, cylinders, or additional actuators, check the available parts in the Mercedes Locks and Latches category. If you are interested in a broader context of using dismantled parts in premium cars and want to better understand how to optimize service costs while maintaining high quality, it is worth reading the article Luxury within reach – how to service a Porsche legend using proven used parts, which discusses a practical approach to selecting original used components.