Door Lock Mercedes W212 W204 Rear Left N/S Latch Mechanism Actuator A0997300535

The Left Rear Door Lock for Mercedes W212 / W204 is a precision locking mechanism designed for installation in the rear left area of the vehicle body. This complete latch mechanism with actuator is responsible for secure closing, unlocking, and cooperation with the central locking system, ensuring proper operation of the passenger door on the driver's side.

Specifications and technical data

• SKU: A0997300535-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0997300535
• Substitutable numbers: A0997300535, A 099 730 05 35
• Location on the vehicle: Rear, Left
• Category: Exterior Locks & Lock Hardware

Vehicle Application and Function

The presented left rear door lock has been specifically designed for Mercedes W212 and W204 class models, taking into account the requirements of the factory locking system. The component is installed in the area of the rear left pair of doors and cooperates with:

• the central locking system and remote control,
• the interior and exterior door handles,
• the anti-lock mechanism during driving.

Thanks to its appropriate mechanical and electrical design, the lock ensures repeatable, stable locking and correct communication with the vehicle's electrical system.

Mechanism Construction and Door System Integration

The mechanism combines a mechanical part responsible for the latch and an integrated electric actuator that performs the automatic closing and opening function within a single housing. The system cooperates with the handle linkages, the lock cylinder (if present in the specific configuration), and the door's electrical system.

This solution allows for:

• consistent operation with the factory Mercedes comfort system,
• precise positioning of the bolt relative to the body pillar,
• maintaining adequate closing force and resistance to multiple work cycles.

Proper fitting to the left rear door structure minimizes the risk of leaks, play, and improper closing of the door leaf.

Benefits of Using an Original Door Lock

Using an original lock from the Locks and Latches group in a Mercedes translates into a number of practical operational benefits:

• maintaining the factory functionality of the central locking system and comfort system,
• correct cooperation with the vehicle's electronics without the need for installation modifications,
• proper alignment with the door and pillar structure,
• reducing the risk of diagnostic errors and "door ajar" warnings.

For the user, this means stable operation of the locking system, correct functioning of the remote closing feature, and an appropriate level of passive safety in the rear cabin.

Characteristics of the Used Part

The offered left rear door lock is a used part, sourced from a dismantled Mercedes vehicle. This type of part allows for economical repair of the locking system while maintaining original construction and operating parameters. In practice, this is a beneficial solution in case of actuator failure, mechanical damage to the lock, or problems with door closing.

Choosing an original dismantled component reduces the risk of misalignment, typical of aftermarket parts with universal designs, and facilitates installation in place of the factory lock.

Complementary Parts and Technical Knowledge

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

If you want to better understand the advantages of using original dismantled parts in cars of this brand, read the article Used Parts for Mercedes – Original Dismantled Parts, which discusses the practical aspects of selecting and operating such components.