Mercedes A-Class W168 Front Left Door Lock Latch Mechanism Actuator A1687202135

Left Front Door Lock for Mercedes A‑Class W168 is an original locking mechanism with an actuator, designed for installation in the left front door of this model. This component belongs to the Doors and Door Panels category and is a precisely fitted part of the locking system, ensuring the correct operation of the handle, latch, and central locking. Thanks to its factory design, it is a service-friendly and technically safe solution for the vehicle body.

Specifications and technical data

• SKU: rhd-A1687202135
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1687202135
• Substitutable numbers: A1687202135, A 168 720 21 35, ASZ
• Location on the vehicle: Front, Left
• Category: Doors & Door Skins

Intended Use and Fitment for Mercedes A‑Class W168

The presented lock mechanism is specifically designed for the front left door of the Mercedes A‑Class W168 generation. This means correct positioning of all mounting points, proper routing of cables, and compatibility with the factory external and internal door handle system. Placement in the front-left area guarantees that the component will work with the original wiring harness and the central locking system used in this model.

Mechanism Construction and Actuator Function

The mechanism combines the mechanical part of the lock with an electric actuator in a single housing. This design allows for:

• consistent operation of manual locking and central locking,
• stable transfer of motion from the handle to the lock bolt,
• correct interaction with the vehicle's factory security features.

Thanks to the integration of the actuator with the lock body, the system is compact, and installation is limited to connecting the plugs and screwing the component into its factory location. Original Mercedes design promotes door seal integrity and proper window and seal operation, as the lock's geometry is consistent with the body design.

Benefits of Using an Original Door Lock

Choosing a factory lock mechanism with an actuator for the Mercedes A‑Class W168 offers a range of practical advantages:

• Precise Fitment – no need for modifications to door panels or mountings, which reduces the risk of looseness and rattling.
• Correct Central Locking Operation – the actuator is adapted to the electrical system parameters and the control unit in this model.
• Stable Locking – the mechanical design has been developed for long-term operation in the front door.
• Easier Diagnostics – using a factory-compliant part simplifies work for service centers and workshops.

This solution is particularly recommended when there are problems with opening or closing the left front door, incorrect central locking response, or irregular actuator operation.

Component Condition and Installation Aspects

The offered door lock is a used original component, meaning it comes from a dismantled vehicle and retains the original Mercedes construction. This type of part is a good choice when you want to maintain original quality while optimizing repair costs.

During installation, it is recommended to:

• check the condition of the door wiring harness and electrical connectors,
• inspect the routing of the handle cables,
• adjust the lock's position relative to the striker on the pillar to ensure smooth door closing.

After installation, it is advisable to verify the operation of the central locking system from the remote control and the button inside the vehicle to confirm the system's full functionality.

Other Mercedes Door Locks and Door Panels

If you are also looking for other elements from the Mercedes Doors and Door Panels category, check out the Mercedes doors and door panels available in our store to select complete solutions for your car – from locks and panels to mounting elements.

For comparing solutions used in different brands and better understanding when it is worth opting for components from higher trim levels, an article about BMW sports components may be helpful – you can find it here: BMW M Performance – differences between BMW M and standard components.