Audi A3 8V S3 2.0 TFSI DJHA 310HP Quattro Engine ECU 8V0906259J Automatic

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A3 8V S3 2.0 TFSI DJHA 310HP Quattro Engine ECU is an original electronic control module designed for all-wheel-drive gasoline engines. As a component in the Electronic control modules and ECUs category, it is responsible for precise engine management, ensuring stable performance and proper integration with the automatic transmission. This is a solution for users looking for a proven, used ECU with factory operating characteristics.

Specifications and technical data

• SKU: 8V0906259J
• Mark: Audi
• Condition: Used
• OEM Part Number: 8V0906259J
• Substitutable numbers: 8V0906259J, 8V0 906 259 J
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU

The presented ECU is dedicated to the sports version of the Audi S3 8V generation with a 2.0 TFSI gasoline engine and Quattro all-wheel drive, paired with an automatic transmission. The module manages key engine parameters such as fuel injection, ignition timing, and protection strategies, which translates into dynamic yet controlled driving characteristics.

Thanks to factory calibration, the ECU maintains consistent operation with other vehicle systems, including the drivetrain and body electronics. This is particularly important in higher-power vehicles, where the stability and predictability of the powertrain's response have a direct impact on safety and component durability.

Benefits of using an original ECU module

Using an original ECU in an Audi S3 8V ensures:

• preservation of factory gasoline engine performance parameters,
• proper cooperation with the automatic transmission,
• consistency with safety and comfort systems,
• possibility of diagnostics and adaptation using standard service tools.

A used module with an intact OEM structure is a solution that allows for the restoration of full powertrain functionality without the need for a costly purchase of a new unit. For workshops and individual users, this means a favorable price-to-quality ratio and easier matching to a specific vehicle configuration.

Selection, installation, and compatibility

To correctly select the ECU for a specific Audi A3 8V S3, it is crucial to verify compatibility based on the OEM number and the engine/transmission configuration. In practice, this means matching the module to the gasoline version with an automatic transmission, which minimizes the risk of communication issues within the vehicle's network.

During installation, it is recommended to:

• check the electrical wiring for damage,
• perform adaptation and any necessary coding using appropriate diagnostic software,
• verify error codes in the ECU memory after the first start-up.

By maintaining manufacturer standards, the module can be integrated into the existing electronic architecture of the vehicle, which facilitates work for workshops specializing in the Audi brand.

Product condition and practical application

The offered ECU comes from the secondary market and is intended for reinstallation in compatible Audi S3 8V vehicles. Such used Electronic control modules and ECUs are frequently chosen by workshops and informed users who are looking for factory solutions on a reasonable budget while maintaining the original engine operating characteristics.

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

Expert support and selecting used electronics

When choosing a used ECU, it is worth paying attention to hardware and software compatibility as well as the method of matching it to a specific car. A detailed discussion of these issues, along with practical tips on selection by OEM number, compatibility, and the installation process, can be found in our guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?. Reading the article will allow you to better plan your repair and reduce the risk of an incorrect purchase.