Mercedes W213 Door Lock Latch Mechanism Actuator Rear Left N/S A0997304100

Mercedes W213 Rear Left Door Lock A0997304100 is an original part from the Locks and Latches group, designed for the rear left side of the body. Specifically designed for Mercedes vehicles, it ensures precise integration with the factory electrical system and door mechanics, resulting in secure closing and stable locking.

Specifications and technical data

• SKU: A0997309500-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0997309500
• Substitutable numbers: A0997309500, A 099 730 95 00, A0997304100, A 099 730 41 00
• Location on the vehicle: Rear, Left
• Category: Exterior Locks & Lock Hardware

Application and Fitment for Mercedes W213

The presented door lock is dedicated to the rear left side of the body in Mercedes E-Class W213 models. The construction, based on the vehicle manufacturer's solutions, guarantees correct positioning relative to the hinges, window, and seals, which minimizes the risk of leaks and improper door wing closing.

Thanks to its factory geometry and appropriate mounting point placement, the part works with the original door handle, rods, and central locking control system, without the need for modifications or adaptations.

Construction and Function of the Rear Left Door Lock

The lock is responsible for the mechanical locking of the door wing and transmitting signals to the central locking system and comfort systems. The internal mechanism works with the actuator and position sensors, enabling:

• stable holding of the door in the closed position while driving,
• correct operation of the central locking and remote opening functions,
• interaction with safety and comfort systems (e.g., door closure monitoring).

The placement on the vehicle specified as rear – left side allows for unambiguous identification of the mounting position and reduces the risk of errors when selecting parts.

Benefits of Using an Original Mercedes Door Lock

Choosing an original door lock for the Mercedes W213 translates into a range of practical operational benefits:

• Factory Fitment – maintains correct door geometry, no issues with closing and locking.
• Electronics Compatibility – proper cooperation with control modules, no errors in comfort systems.
• Stable Mechanism Operation – predictable central locking performance and repeatable door wing locking.

The part comes from the Locks and Latches group, meaning it is designed to handle the loads resulting from daily door use, frequent opening and closing, and operation in varying weather conditions.

Condition, Origin, and Service Application

The offered lock is a used part, making it an attractive service solution for users seeking original components at a reasonable price. Such parts are particularly recommended for accident repairs, replacement of a damaged mechanism after a collision, or when experiencing issues with door closing and locking.

Due to its factory origin, the lock maintains compatibility with the door structure and operating parameters specified by the vehicle manufacturer, which facilitates installation and reduces repair time in the workshop.

Repair Extension – Mercedes Locks and Latches

If you are planning a comprehensive repair or upgrade of the side door area in your Mercedes and need other parts from the same group, such as latch mechanisms, lock cylinders, or central locking actuators, check the available parts in the Mercedes Locks and Latches category.

Technical Knowledge and Selection of Used OEM Parts

When selecting used OEM parts for mechanical and drivetrain systems, it is advisable to rely on proven sources and reliable technical knowledge. If you are interested in a broader context of using original, used components in repairs, the article: Whining Differential? Find out why a used OEM drive axle is a better investment than an uncertain aftermarket part may be helpful.