Mercedes-Benz C-Class W203 Front Left N/S Door Lock Latch Mechanism Actuator

Mercedes-Benz C-Class W203 Front Left N/S Door Lock Latch Mechanism Actuator is an original locking mechanism with a built-in actuator, designed for installation on the driver's side. This component ensures proper locking, unlocking, and latching of the door, and its design is tailored to the specifics of the W203 body, facilitating service and replacement in workshop conditions.

Specifications and technical data

• SKU: rhd-A2037200335
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2037200335
• Substitutable numbers: A2037200335, A 203 720 03 35, ŁS
• Location on the vehicle: Front, Left
• Category: Doors & Door Skins

Purpose and fitment for Mercedes C-Class W203

The presented Mercedes-Benz C-Class W203 Front Left N/S Door Lock Latch Mechanism Actuator has been designed specifically for the W203 generation of Mercedes-Benz C-Class models. Its placement in the front – left side of the body zone means it is a component dedicated to the driver's door in right-hand drive versions, with full integration with the factory central locking system and interior vehicle controls.

The original design of the lock guarantees proper fitment with the door panel, guides, and handle, which reduces the need for additional modifications and allows for the maintenance of factory parameters of the locking system.

Construction and function of the lock mechanism

The mechanism combines a mechanical part responsible for latching with an electrical part, i.e., an actuator controlling the lock's operation. Thanks to this, the lock works with both the key cylinder and the central locking remote, as well as internal locking buttons.

• precise door latching in the closed position,
• smooth unlocking using the external or internal handle,
• compatibility with the vehicle's electrical system and comfort module,
• stable mounting to the door structure and door panels.

This configuration allows for maintaining the proper operation of the passive safety system, including correct door closing and unlocking during daily use.

Characteristics of the used component

The offered door lock comes from the group of used Mercedes body parts, which means it is a salvaged part intended for further use after proper installation. Such components are often chosen for post-accident repairs, replacing damaged locks, or resolving central locking issues, as they allow for maintaining the vehicle's original specifications at reasonable service costs.

Proper installation of the lock in the front left door minimizes the risk of play, rattling, and improper closing, which translates into comfort of use and correct operation of the locking system while driving and when parked.

Benefits of using an original door lock

Using a factory lock mechanism in the Mercedes-Benz C-Class W203 ensures:

• compatibility with the door structure and door panels – no issues with fitment and positioning,
• proper cooperation with the factory electrical installation and central control,
• maintenance of the correct door closing geometry on the driver's side,
• possibility of effective lock system repair without interfering with other body elements.

For workshops and private users, this means faster replacement, lower risk of operational problems, and maintaining consistency with other elements of the vehicle's locking system.

Mercedes doors and door panels – expansion and repairs

If you are planning a comprehensive repair or upgrade of the door zone in your Mercedes and need other elements from the same group, such as skins, reinforcements, or additional mounting elements, check the available parts in the Mercedes doors and door panels category.

To better utilize the potential of used body components and locking systems, it is worth learning practical tips regarding their operation and maintenance – you will find them in the article How to extend the life of used car parts?, which discusses, among other things, the principles of caring for salvaged parts in Mercedes vehicles.