Mercedes-Benz B-Class W245 Front Right O/S Door Lock Latch Mechanism Actuator

The Mercedes-Benz B-Class W245 Right Front Door Lock is a precise latch mechanism with an actuator, designed for installation on the driver's side in right-hand drive versions. This component belongs to the Doors and Door Panels group and ensures secure locking, smooth opening, and proper integration with the factory central locking system.

Specifications and technical data

• SKU: rhd-A1697203835
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1697203835
• Substitutable numbers: A1697203835, A 169 720 38 35, EM
• Location on the vehicle: Front, Right
• Category: Doors & Door Skins

Purpose and Function in the Vehicle

The presented lock mechanism is dedicated to the front right door of the Mercedes-Benz B-Class W245 generation. It is responsible for the mechanical locking of the door leaf, cooperation with the external and internal door handles, and the central locking control system. A properly functioning lock in this location is crucial for:

• secure door closure while driving,
• stable operation of the central locking system,
• correct response to signals from the remote control and lock cylinder,
• comfortable opening and closing of the door from the inside.

Construction and Performance Parameters

The mechanism combines a latch part and an actuator responsible for automatic locking and unlocking within a single housing. The construction is optimized for cooperation with the factory electrical system and the door geometry of the W245, which translates to:

• stable latch guidance and repeatable door closure,
• appropriately selected actuator force,
• precise positioning relative to the door pillar and striker,
• maintenance of factory clearances and gaps within the door panel.

Thanks to this, the lock, after correct installation, does not require additional structural modifications, and the adjustment process is limited to standard service procedures.

Benefits of Using an Original Door Lock

Using a dedicated lock for the front right door of the Mercedes-Benz B-Class W245 allows for consistency with the factory body and electrical design. In practice, this means:

• secure door closure without the need for excessive force,
• proper cooperation with existing rods and handles,
• no need for wiring harness modifications,
• preservation of the original central locking operating characteristics.

The component from the Doors and Door Panels group directly impacts the comfort of daily vehicle operation, reducing the risk of problems with incomplete closure, spontaneous opening, or lack of response to the remote signal.

Condition, Fitment, and Installation

The offered lock is a used part, sourced from disassembly, allowing for economical repair while maintaining original specifications. The construction designed for installation on the front right side allows for direct fitment to the factory mounting points in the W245 doors. When replacing, it is recommended to:

• check the condition of rods and handles cooperating with the lock,
• verify the correct adjustment of the striker in the pillar,
• check the operation of the central locking system after connecting the wiring.

This approach minimizes the risk of repeated disassemblies and ensures stable operation of the locking system in the long term.

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other parts from the same group, such as locks, hinges, or complete door panels, check the available parts in the Mercedes Doors and Door Panels category.

Additionally, to better plan service work on your car and optimize operating costs, it is worth familiarizing yourself with our guide on the impact of high temperatures on the cooling system – details can be found in the article Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings.