Mercedes-Benz C-Class W203 Front Right O/S Door Lock Latch Mechanism Actuator

Mercedes-Benz C-Class W203 Front Right O/S Door Lock Latch Mechanism Actuator is a precision latch mechanism with a built-in actuator, designed for installation on the passenger side. It offers stable operation of the locking system, ensuring secure closing and unlocking of the door during daily use. This solution is dedicated to the W203 body style, allowing for a technically correct replacement of a worn-out component in the door area.

Specifications and technical data

• SKU: rhd-A2037200235
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2037200235
• Substitutable numbers: A2037200235, A 203 720 02 35, AS
• Location on the vehicle: Front, Right
• Category: Doors & Door Skins

Purpose and fitment for the W203 body

The presented lock mechanism has been designed specifically for the front right door of the Mercedes-Benz C-Class W203 model. Its placement in the front-right area ensures proper alignment with the door structure, window guide, and factory wiring. As a result, the lock works with the original central locking control system and allows for maintaining the factory functionality of the passenger-side door.

Mechanism construction and actuator function

The mechanism combines a latch part and an actuator assembly responsible for automatic locking and unlocking in a single housing. The construction intended for the door zone in the Mercedes W203 ensures:

• stable guidance of the lock tongue in the pillar striker,
• consistent cooperation with the external and internal door handles,
• transfer of movement from the actuator to the locking mechanism,
• correct response to signals from the central locking system.

This configuration enables the maintenance of predictable door operation – both when controlled via the remote and from inside the vehicle.

Performance characteristics of the used component

As an item from the Doors and door panels category, the lock is intended for installation in the existing body structure without interfering with the door geometry. The used nature of the part means that the mechanism has been previously operated, which in practice allows for:

• maintaining the original lock operation characteristics typical for the W203,
• easy adjustment to factory mounts and linkages,
• reduction of time required for installation and adjustment.

This solution is particularly useful for post-accident repairs or replacing a worn-out lock when the priority is to restore the correct functionality of the passenger-side door.

Benefits of using a dedicated door lock

Using a dedicated lock with an actuator in the Mercedes C-Class W203 brings a number of practical benefits:

• Compatibility with the factory central locking system – no need for electrical installation modifications.
• Proper fitment to the door structure – maintaining the correct position of the lock tongue relative to the striker.
• Consistent cooperation with handles and the internal opening mechanism – comfortable door usage for the passenger.
• Possibility of restoring full functionality of the door zone after bodywork repairs or panel replacement.

Integration with other door zone components

The lock mechanism works with other door components, such as linkages, handles, guides, and seals, creating a cohesive system responsible for safety and convenience. The proper operation of this element has a direct impact on:

• secure door closing while driving,
• appropriate response to signals from the remote and internal buttons,
• overall comfort of using the front right cabin area.

If you are planning a comprehensive repair or upgrade of the side body area in your Mercedes and need other elements from the same group, such as panels, reinforcements, or door frames, check the available parts in the Mercedes Doors and door panels category.

For drivers interested in a broader approach to vehicle service, including selecting components by catalog numbers and proper diagnostics, the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses practical principles of working with automotive components, may be helpful.