Audi A5 8T 3.2 FSI 265HP CALA Quattro Engine Control ECU 8T0907559E Automatic

The Engine Control Unit for Audi A4 B8 / A5 8T 3.2 FSI Quattro is an original electronic control module designed for a 265 HP gasoline engine with permanent all-wheel drive. As a component from the Electronic Control Units and Controllers group, it is responsible for precise engine management, ensuring stable power characteristics, correct fuel delivery, and compatibility with a manual transmission.

Specifications and technical data

• SKU: 8T0907559E-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8T0907559E
• Substitutable numbers: 8T0907559E, 8T0 907 559 E, 8T0907559A, 8T0 907 559 A, 5WP46120
• Fuel type: Petrol
• Gearbox type: Automatic
• Part type: Engine Control Unit (ECU)
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Purpose and Function of the Engine Control Unit

The presented control unit is dedicated to the 3.2 FSI gasoline engine with 265 HP in Audi A4 B8 and Audi A5 8T models with Quattro all-wheel drive and a manual transmission. As an Engine Control Unit, it monitors key engine operating parameters such as injection timing, ignition advance angle, and cold start strategies, which translates into predictable throttle response and comfortable operation.

Thanks to its factory architecture, the control unit collaborates with other vehicle systems, creating a cohesive powertrain management system. An appropriately selected ECU is particularly important when replacing a damaged control unit due to electronic failures, starting problems, or unstable engine operation.

Benefits of Using an Original ECU

An original engine control unit from an Audi vehicle ensures compatibility with the factory configuration of the 3.2 FSI unit, which facilitates adaptation in the car and reduces the risk of communication problems within the vehicle network. Precise matching to the specific Quattro version with a manual transmission allows for maintaining correct engine operating maps and the logic of interaction with safety and comfort systems.

Compared to universal replacements, using an original ECU from the same engine family promotes stable unit operation, proper diagnostic support, and easier programming using standard service tools.

Practical Application in Service

The control unit is suitable for situations where the existing module has been damaged due to voltage surges, flooding, installation errors, or unsuccessful software modifications. Replacing it with the correct ECU is often the quickest way to restore full engine functionality, especially when repairing the electronics proves uneconomical.

In workshop practice, such a module is used, among other things, for:

• engine starting problems despite the mechanical condition of the unit being sound,
• recurring communication errors with the ECU during diagnostics,
• faults related to incorrect injection control in a gasoline engine,
• the need to replace the control unit after damage to the electrical system.

Operating Characteristics with Gasoline Engine and Manual Transmission

As a control unit designed for the FSI gasoline engine, the module is optimized for direct fuel injection, which allows for maintaining adequate dynamics while controlling fuel consumption. Adaptation to a manual transmission means proper management of idle speed, clutch release response, and operational stability during gear changes, which is important both in everyday driving and under heavier load on the Quattro drivetrain.

Audi Electronic Control Units and Controllers

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other components from the same group, such as engine control units, comfort modules, or other electronic control units, check the available parts in the Audi Electronic Control Units and Controllers category.

Technical Knowledge and Selection of Used Control Units

When selecting a used ECU, it is worth paying attention to compatibility with the specific engine version and the vehicle's electronic architecture. Experience with other makes and models where similar modules perform an analogous function can be helpful. For a better understanding of how engine control units and other electronic modules work, as well as how to safely replace them with used parts, it is worth reading the article Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models Using Used Parts?, which discusses practical aspects of working with automotive electronics.