Mercedes GLA 220d X156 4matic 651.930 177HP Engine ECU A6519007003 Automatic

Mercedes GLA 220d X156 4matic 651.930 177HP Engine ECU is a factory-original electronic control unit designed for the diesel engine paired with an automatic transmission. This solution is engineered for precise management of diesel engine operation, ensuring stable powertrain performance and proper communication with other vehicle systems.

Specifications and technical data

• SKU: A6519007003-3
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6519007003
• Substitutable numbers: A6519007003, A 651 900 70 03, A2469055103, A 246 905 51 03, A6519014402, A 651 901 44 02
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU

The presented ECU belongs to the Electronic control modules and ECUs category and is dedicated to the diesel powertrain in the Mercedes GLA 220d X156 model with 4MATIC drive. It is responsible for advanced management of engine operating parameters, such as fuel injection, interaction with safety systems, and communication with the automatic transmission.

Thanks to its factory design, the ECU maintains full integration with the vehicle's electrical architecture, which translates into predictable engine behavior, correct operation of driver assistance systems, and consistency of diagnostics within the CAN network.

Compatibility with diesel engine and automatic transmission

The ECU has been designed to work with the diesel unit and automatic transmission, which is crucial for smooth gear shifting and response to load. The appropriate control maps and ECU operating logic are tailored to the characteristics of the diesel engine, ensuring proper torque values across the entire RPM range.

Such matching allows for:

• stable engine operation under various load conditions,
• proper cooperation with the all-wheel-drive system,
• consistent operation of safety and comfort systems dependent on the engine control unit.

Product characteristics and condition

The offered module comes from a Mercedes vehicle and is a used component, which in practice means it has already been verified under real operating conditions. These types of ECUs are a popular choice as an economical alternative to new components, especially for repairs where maintaining the original electronics architecture is important.

Choosing an original ECU from the secondary market allows for reduced service costs while maintaining factory control logic, which is particularly important in modern powertrains with extensive inter-module communication.

Professional application and selection of the ECU

Due to the specific nature of engine electronics, this type of ECU is highly recommended for workshops specializing in the Mercedes brand and for users who want to maintain compliance with the vehicle's factory configuration. When selecting an ECU, it is crucial to match it to the specific diesel engine version and transmission type; therefore, it is recommended to verify parameters in service documentation or catalog systems before installation.

In many cases, after installation, adaptation procedures or programming in the vehicle are required, which is best entrusted to a service center equipped with appropriate diagnostic software.

More solutions from this group and technical knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as injection control modules, auxiliary system controllers, or other ECU units, check out the available parts in the Mercedes electronic control modules and ECUs category.

To better assess when choosing a used engine ECU is justified, how to verify its fitment, and what to pay attention to during installation, it is worth reading the guide: The second life of electronics – when is it worth choosing used engine ECUs, comfort modules, and parking sensors?.