Mercedes W205 OM654.916 160HP Engine Control Module ECU A6549004300 Automatic

Mercedes W205 OM654.916 160HP Engine Control Module ECU is a specialized, used control module designed for diesel units with an automatic transmission. This component from the Electronic control modules and controllers group is responsible for precise engine management, ensuring stable power characteristics and proper cooperation with vehicle systems. It is a solution for users looking for original engine electronics with proven functionality.

Specifications and technical data

• SKU: A6549004300-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6549004300
• Substitutable numbers: A6549004300, A 654 900 43 00, A6549012600, A 654 901 26 00, 0281034752, 0 281 034 752
• Fuel type: Diesel
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and function of the engine controller

The presented ECU is dedicated to the OM654.916 power unit with 160 HP in the Mercedes W205 model, running on Diesel fuel. The module manages key engine operating parameters, such as fuel dosage, boost pressure, or injection corrections, which translates into proper engine performance and compliance with factory control maps.

The ECU works with the automatic transmission, coordinating data exchange between the engine and the gearbox. This makes it possible to maintain smooth gear shifting, proper gear engagement timing, and stable operation of auxiliary systems, such as traction control systems or comfort functions dependent on engine load.

Benefits of using an original ECU

Using a factory controller in a Mercedes W205 with an OM654.916 engine allows for maintaining software consistency with other vehicle modules. A properly selected ECU minimizes the risk of communication errors in the vehicle network, reduces the occurrence of warning lights, and facilitates subsequent computer diagnostics.

The main advantages of this solution include:

• maintaining factory engine performance characteristics in the 160 HP version,
• proper cooperation with the automatic transmission and safety systems,
• possibility of integration with the existing installation without the need for wiring modifications,
• easier adaptation and coding compared to non-factory replacements.

Selection, compatibility, and installation

To ensure the correct operation of the controller, it is crucial to match it to the specific vehicle configuration, taking into account the engine version, transmission type, and the software used. In practice, this means verifying compatibility based on part numbers and hardware/software parameters, as well as matching it to the equipment of a specific vehicle.

Installation by a workshop with access to appropriate diagnostic software is recommended, enabling adaptation, potential coding, and checking communication with other modules. A correctly performed installation allows for restoring full functionality of the powertrain without interfering with the engine mechanics.

Used ECU controller – practical information

As a used component, the controller has already been in operation in another vehicle, which in practice means that it is worth paying attention to correct selection and the installation procedure. In many cases, it is necessary to match the software to a specific car, and sometimes also to transfer immobilizer data or perform appropriate programming, in accordance with the procedures used in Mercedes electronics.

If you want to better understand how to safely select and install used control modules, including ECUs, and what to look for when selecting by part numbers and compatibility, check out the guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

Expanding the control system in a Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional control modules, auxiliary controllers, or units managing accessory operation, check the available parts in the Mercedes electronic control modules and controllers category.

For drivers who want to complete more used components for vehicle repair or modernization in one place, a practical One-Stop-Shop shopping guide may also be useful: Comprehensive supply: From the engine to the smallest clip – how to complete used car parts in one place?.