Mercedes W470 Door Lock Latch Mechanism Actuator Rear Left N/S A4707300500

Mercedes W470 Door Lock Latch Mechanism Actuator Rear Left N/S is a precision component from the Doors and door panels group, responsible for securely locking and unlocking the door leaf. This used, original actuator and latch mechanism ensures proper cooperation with the factory locking system, which translates into secure and stable closing of the rear left door.

Specifications and technical data

• SKU: A4707300500
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4707300500
• Substitutable numbers: A4707300500, A 470 730 05 00
• Location on the vehicle: Rear, Left
• Category: Doors & Door Skins

Purpose and function in the vehicle

The presented lock mechanism is designed for installation in the rear left part of the body of Mercedes W470 series vehicles. It is responsible for:

• mechanical locking of the door in the closed position,
• transferring movement from the handle and central locking actuator to the latch,
• cooperation with the factory cabin access security system.

Thanks to its dedicated placement on the vehicle, this component is matched to the geometry of the door, guides, and the striker in the pillar, which facilitates installation and reduces the need for adjustment.

Construction and technical characteristics

The rear left lock mechanism in the Mercedes W470 combines a mechanical part and an integrated actuator. This assembly creates a coherent system that:

• transfers loads associated with frequent opening and closing of the door,
• ensures stable positioning of the lock tongue relative to the striker,
• enables cooperation with the factory central locking and the vehicle's electrical installation.

Such a solution allows for maintaining consistency with the original door and body construction, and also reduces the risk of play and improper closing of the leaf.

Benefits of using an original mechanism

Using an original rear left lock mechanism in the Mercedes W470 brings a number of practical benefits:

• Factory fit – maintaining the correct geometry relative to the hinges, handle, and striker in the pillar.
• Consistent cooperation with electronics – correct operation with the central locking and other control elements.
• Stable operation in daily use – predictable locking and unlocking of the door, without the need for excessive force when closing.

For the user, this means a lower risk of problems with improper closing, accidental opening while driving, or incorrect reaction of the locking system.

Condition, verification, and service application

The offered component comes from the group of used Mercedes parts and is intended as a service replacement in case of wear or damage to the factory lock in the rear left door. It works well both for standard repairs after operational wear and for bodywork and paint repairs after a collision, when it is necessary to replace the complete locking assembly.

Before installation, it is recommended to perform a standard inspection of the door installation (guides, hinges, striker adjustment) to fully utilize the potential of a functional mechanism and ensure smooth, predictable closing of the leaf.

Expanding repairs within the Mercedes door area

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

For drivers also interested in the drivetrain and other mechanical components, a practical supplement to knowledge may be a guide on purchasing used drivetrain components – more information can be found in the article Second-hand differential – what is worth knowing about used differentials, sensors, and drivetrain systems.