Mercedes W164 Differential Lock Module Control Unit ECU A1645403562

The Mercedes W164 Differential Lock Control Module is an original electronic control unit designed for the drivetrain system in vehicles of this series. It ensures precise management of the differential lock's operation, translating into stable handling and predictable vehicle behavior in varied road conditions. Due to its genuine Mercedes origin, the module maintains full compatibility with the vehicle's electrical architecture and software.

Specifications and technical data

• SKU: A1645403562
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1645403562
• Substitutable numbers: A1645403562, A 164 540 35 62
• Category: Additional Differential Parts

Purpose and Function in the Drivetrain System

The presented differential lock control unit is a component from the Other Differential Parts group, responsible for the electronic control of the lock's operation on the drive axle. The module collaborates with sensors and other vehicle controllers, analyzing signals from the drivetrain and adjusting the differential lock's engagement level accordingly.

This solution allows for:

• more predictable torque transfer to the wheels,
• increased traction on slippery or uneven surfaces,
• limited wheel slip in critical situations,
• maintenance of driving stability during dynamic maneuvers.

Benefits of Using an Original Mercedes Module

Using an original differential lock control module in a Mercedes W164 provides a range of practical operational benefits. The unit is factory-matched to the electrical system and the logic of driver assistance systems, minimizing the risk of communication errors within the vehicle network. This ensures the drivetrain maintains consistent operation with safety systems such as traction control or stability control.

Key advantages include:

• Full integration with vehicle electronics – the controller works with factory systems without the need for additional modifications.
• Stable differential lock operating parameters – maintaining the characteristics intended by the vehicle manufacturer.
• Reduced risk of diagnostic errors associated with incompatible aftermarket parts.

Operational and Installation Characteristics

The module belongs to the group of electronic components that are practically treated as plug-and-play components within a given vehicle model, provided the generation and equipment version are compatible. Correct selection by OEM part number and interchangeable numbers allows for seamless integration with the existing wiring harness and drivetrain control system.

Before installation, it is recommended to:

• verify compatibility by part number and any reference numbers,
• check requirements for potential adaptation or coding in the vehicle,
• perform post-installation diagnostics to confirm correct communication within the controller network.

Product Condition and Service Application

The offered module is a used component, making it an attractive service solution for drivetrain repairs in the Mercedes W164. This type of part allows for an economical replacement of a damaged control unit while maintaining the original manufacturer's specifications. In workshop practice, it proves useful for both typical repairs and for restoring full drivetrain functionality after an electronic failure.

Selection by OEM Numbers and Technical Support

Due to the importance of correct identification of control units in Mercedes vehicles, matching the differential lock module by OEM part number and interchangeable numbers is crucial. This helps avoid problems with software compatibility and vehicle network communication. If you want to streamline the component selection process and reduce the risk of errors in online purchases, it is worth using the practical tips contained in the article Risk-Free Online Parts Shopping – 5 Proven Ways to Verify Component Compatibility by OEM Numbers and Paint Codes.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and need other parts from the same group, such as differential housings, mounting elements, or additional control components, check the available parts in the Other Mercedes Differential Parts category.