Mercedes R170 Door Lock Latch Mechanism Actuator Left N/S A1707200335

Mercedes R170 Door Lock Latch Mechanism Actuator Left N/S is an original locking mechanism with a built-in actuator, designed for installation on the left side of the vehicle body. This component belongs to the Locks and Latches group and ensures proper operation with the factory central locking system and the vehicle's electrical installation, restoring full functionality of the driver's door opening and closing.

Specifications and technical data

• SKU: rhd-A1707200335
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1707200335
• Substitutable numbers: A1707200335, A 170 720 03 35
• Location on the vehicle: Left
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The presented lock mechanism is dedicated to Mercedes R170 series models and is mounted on the left side of the vehicle. It is responsible for precise door locking, interaction with the exterior and interior door handles, and the central locking system, which directly impacts safety and daily comfort of use.

As a component integrated with an actuator, the lock performs both mechanical and electrical functions – it controls the position of the latch based on signals from the remote control or the door lock, ensuring consistent operation with the other doors of the vehicle.

Construction and technical features

The lock mechanism is based on a gear system, levers, and a housing adapted to the factory mounting points in the R170 door. The design provides compatibility with the factory wiring harness and stock door handle rods, meaning installation does not require any modifications or adaptations.

Key features of this component include:

• dedicated placement on the left side of the vehicle,
• integrated electric drive responsible for controlling the latch,
• compatibility with the factory Mercedes R170 central locking system,
• housing adapted to the stock mounting holes in the door.

Condition, origin, and benefits of use

The offered lock is a used part, sourced from vehicle dismantling, which allows for maintaining the original vehicle specification while reducing repair costs. Using an OEM component from the same model series minimizes the risk of fitment issues, play, or improper latch operation.

Replacing a damaged lock with an original mechanism with an actuator allows you to:

• restore proper locking and unlocking of the driver's door,
• eliminate problems with doors not closing properly or opening on their own,
• maintain consistent operation of the central locking system across all doors,
• preserve the factory standard of safety and ease of use.

Selection and installation of the door lock

To correctly select this component, it is worth paying attention to compatibility with the R170 model series, the installation side, and the type of locking system used. The mechanism is designed as a plug-and-play solution within this generation, which facilitates workshop work and reduces vehicle downtime.

During installation, it is recommended to:

• check the condition of the door handle rods and guides in the door,
• verify the correct operation of the central locking system after connection,
• check the latch adjustment relative to the pillar to ensure smooth door closing.

Repair expansion and additional information

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

To better plan service work and reduce vehicle downtime in the workshop, it is worth learning how a wide selection of original used parts from a single warehouse affects repair lead times – you can find more on this topic in the article No more waiting for weeks – how a wide assortment in one warehouse really shortens your car's downtime at the mechanic?.