Mercedes-Benz M ML W164 Front Left Door Lock Mechanism Actuator A1647201335

Mercedes-Benz M ML W164 Front Left Door Lock Mechanism Actuator is an original component from the Locks and latches group, designed for precise locking and unlocking of the driver's door. This used, factory-original lock ensures proper integration with the vehicle's electrical system and provides smooth operation of the central locking system as well as the interior and exterior door handles.

Specifications and technical data

• SKU: rhd- A1647201335
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1647201335
• Substitutable numbers: A1647201335, A 164 720 13 35, A1697202735, A 169 720 27 35, KZ
• Location on the vehicle: Front, Left
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The presented lock mechanism is dedicated to the front left door of Mercedes-Benz M/ML W164 generation models. Positioned in the driver's door area, this component is responsible for key safety and convenience functions: locking, unlocking, central locking system integration, and correct response to signals from the remote control and lock cylinder.

Thanks to its design, which matches factory mounting points and door geometry, the lock maintains original mounting rigidity and ensures correct operation of the handle rods and linkages without the need for modifications or adaptations.

Construction and operation of the mechanism

The mechanism combines a mechanical part responsible for locking with an electrical part (actuator) that works with the vehicle's central locking system. The applied design enables:

• smooth locking and unlocking of the driver's door,
• integration with factory remote control and cabin interior controls,
• correct response to signals from the vehicle's electrical system,
• stable transmission of movement from the exterior and interior handles.

Its original origin from the Locks and latches group helps maintain the correct geometry of the catches and appropriate closing force, which translates into door usage comfort and the reduction of unwanted play.

Benefits of using an original lock

Using a factory lock mechanism in a Mercedes-Benz M/ML W164 helps maintain the integrity of the vehicle's safety and comfort systems. The most important advantages include:

• Full compatibility with the door structure – perfect fit for factory mounting points and rod routing.
• Proper integration with vehicle electronics – correct operation of the central locking and door open signaling.
• Reduction of the risk of errors and fault messages resulting from the use of unsuitable replacements.
• Ability to restore proper lock function in case of issues with locking, lack of response to the remote, or improper door closing.

Selection and installation in Mercedes-Benz M/ML W164

Before installation, it is recommended to verify the part's compatibility with the specific vehicle equipment version, particularly regarding the mounting side (front, left) and the central locking system used. A properly selected lock facilitates installation and reduces the time required for door panel removal and rod adjustment.

In practice, the installation involves replacing the complete mechanism in the door, while maintaining the factory routing of the electrical harness and correct positioning of the catches. This allows for the effective removal of typical wear symptoms, such as lack of response to locking, doors opening on their own, or closing problems.

Repair scope expansion and additional materials

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 actuators, cylinders, or latches, check out the available parts in the Mercedes Locks and latches category.

For those also considering improving the ergonomics and appearance of the cabin, a guide on interior personalization may be helpful – you can find more practical tips in the article Car interior tuning with Global Parts.