Mercedes-Benz A-Class W169 Rear Left Door Lock Mechanism Actuator A1697302135

Left Rear Door Lock for Mercedes-Benz A-Class W169 is an original locking mechanism designed for installation in the rear left door of this model. As a component from the Doors and Door Panels category, it is responsible for secure closing, proper locking, and integration with the factory central locking system. The used mechanism offers a functional service solution for Mercedes owners seeking a proven part at a reasonable price.

Specifications and technical data

• SKU: A1697302135-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1697302135
• Substitutable numbers: A1697302135, A 169 730 21 35, A1697600404, A 169 760 04 04
• Location on the vehicle: Rear, Left
• Category: Doors & Door Skins

Intended Use and Fitment for Mercedes A‑Class W169

The presented lock mechanism is specifically designed for the rear left side of the W169 generation A-Class body. This means its geometry, mounting points, and interaction with rods and the handle are consistent with the factory door construction. As a result, the lock maintains:

• correct positioning relative to the door pillar and catch,
• proper interaction with the lock cylinder and interior handle,
• compatibility with the factory central locking system and remote control.

Such precise fitment minimizes the risk of issues with door closing, play, or leaks after repair.

Mechanism Construction and Actuator Function

The mechanism combines the locking part with an electric actuator within a single housing. This assembly is responsible for both the mechanical locking of the door leaf and the remote control of locking and unlocking via the central locking system. Using a complete module allows for addressing common faults in one step, such as:

• no door response to remote control commands,
• only partial locking of vehicle doors,
• the need to repeatedly close the door for the lock to engage.

Thanks to its factory design, correct integration with the electrical system and comfort controllers in the Mercedes A-Class is ensured.

Benefits of Using an Original Left Rear Lock

Installing an original lock mechanism in the left rear door offers a range of practical service and user benefits:

• Factory Fitment – the lock is precisely matched to the W169 door construction, simplifying installation and minimizing the need for adjustments.
• Electronics Compatibility – the actuator integrates seamlessly with the original central locking control, eliminating the need for wiring modifications.
• Stable Locking System Operation – a correctly functioning mechanism enhances the comfort of daily vehicle use and the safety of passengers.
• Service Solution Aligned with Mercedes Design – adhering to the manufacturer's original concept reduces the risk of future operational problems.

Condition, Application, and Installation Tips

The offered lock is a used part, sourced from disassembly, making it an attractive alternative to new components for routine repairs. Before installation, a standard check of the door's electrical system and the condition of the wiring harness in the grommet is recommended to rule out additional causes for central locking issues.

In practice, installation involves removing the door trim, disconnecting rods and electrical connectors, and then transferring the mechanism. To ensure full functionality, pay attention to:

• correct routing of the interior and exterior handle rods,
• secure connection of the actuator's electrical connector,
• testing the lock operation before reassembling the trim.

Mercedes Doors and Door Panels – Part Selection and Technical Knowledge

If you are looking for other components from the Doors and Door Panels category dedicated to this brand, check out the Mercedes doors and door panels available in our store to select compatible body components for your model.

For those interested in a broader perspective on design solutions and technological advancements within this brand, we recommend the guide article The Evolution of the Mercedes S-Class – Innovations and Mercedes Parts Across Generations, which helps to better understand the manufacturer's design philosophy and approach to selecting replacement parts.