Mercedes W206 S206 Lock Locking Mechanism Rear Left N/S Door A0997304901

Mercedes W206 S206 Lock Locking Mechanism Rear Left N/S Door is a precision locking mechanism designed for installation in the rear left door of vehicles of this generation. The offered component belongs to the Interior locks and latches group, ensuring proper integration with the factory central locking system and body electronics. This used component provides a functional service solution for Mercedes owners seeking parts with original, factory-specified operating characteristics.

Specifications and technical data

• SKU: A0997304901
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0997304901
• Substitutable numbers: A0997304901, A 099 730 49 01
• Location on the vehicle: Rear, Left
• Category: Interior Locks & Lock Hardware

Purpose and compatibility

The presented lock mechanism is designed for installation in the rear left door of the body, meaning it is responsible for the correct locking and unlocking of this specific area of the vehicle. The design is adapted to the architecture of the Mercedes W206 / S206 body, taking into account cable routing, mounting points, and integration with the factory actuator and electrical installation.

As an original Mercedes part, the lock maintains the correct mounting points, geometry, and method of operation with the interior and exterior door handles, which facilitates installation and reduces the risk of fitment issues.

Construction and function of the locking mechanism

The mechanism belongs to the Interior locks and latches group, which means it is responsible for physically locking and releasing the door wing in response to signals from the central locking system and manual handle operation. Inside the housing, there is a set of gears, latches, and levers that work with cables and control elements.

Key tasks of this lock include:

• stable retention of the door in the closed position while driving,
• correct locking using the central locking system,
• smooth unlocking after opening via remote or from the interior,
• cooperation with vehicle safety systems, depending on the car's configuration.

Thanks to its factory design, the lock ensures predictable, repeatable operation and the appropriate clamping force of the lock tongue against the striker in the body pillar.

Benefits of using an original Mercedes lock

Using an original mechanism in the rear left door provides a number of practical service and operational benefits:

• Full dimensional compatibility – preserved factory mounting points and geometry facilitate installation without modifications.
• Proper cooperation with the vehicle's installation – the lock is prepared to work with the original central locking and electronic control.
• Consistent operation of handles and latches – no difference in the feel of operation between individual doors.
• Possibility of use as a replacement part for accident or maintenance repairs.

For workshops and users, this means reduced installation time and a lower risk of complaints related to improper door operation after repair.

Condition and service application

The offered lock is a used item, which makes it an attractive cost-effective solution while maintaining the original design. This type of part is particularly useful in:

• repairs after mechanical damage to the door,
• fixing central locking faults in one specific wing,
• restoring full locking functionality after a factory mechanism failure.

Thanks to the maintained compatibility with the factory body system, the lock can be used both in routine repairs and during comprehensive renovation of the rear left door area.

Expansion of the locking system in a Mercedes

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other elements from the same group, such as additional locking mechanisms, interior locks, or related control elements, check the available parts in the Mercedes interior locks and latches category.

For vehicle owners who are also thinking about improving cabin ergonomics, an interesting addition to your knowledge might be an article on interior personalization – more information can be found in the material Car interior tuning with Global Parts, which describes the practical application of used equipment components.