Audi Q5 FY Mk2 40 TDI DTPA 204HP Engine Control Module ECU 05L907309S Automatic

Audi Q5 FY Mk2 40 TDI DTPA 204HP Engine Control Module ECU is a specialized electronic control module designed for precise management of the diesel engine unit in the automatic transmission version. This component from the Electronic control modules and controllers category is responsible for advanced engine parameter control, ensuring stable operation of the powertrain and consistency with Audi's factory electronics architecture.

Specifications and technical data

• SKU: 05L907309S
• Mark: Audi
• Condition: Used
• OEM Part Number: 05L907309S
• Substitutable numbers: 05L907309S, 05L 907 309 S, 0281039428, 0 281 039 428
• Fuel type: Diesel
• Gearbox type: Automatic
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Purpose and function of the engine control module

The presented controller is dedicated to the 40 TDI unit in the second-generation Audi Q5 (FY) model, working in conjunction with an automatic transmission. As an Engine Control Unit, it manages key combustion processes in the diesel engine, such as fuel dosing, boost pressure control, auxiliary system operation, and communication with other vehicle modules.

A properly selected ECU allows for maintaining consistency with the vehicle's factory configuration, which is important for both driving dynamics and the correct operation of safety and comfort systems. Matching the controller to the engine version and transmission type reduces the risk of CAN network communication errors and diagnostic issues.

Benefits of using an original Audi module

Choosing a controller from the range of original Audi solutions translates into a number of practical advantages:

• preservation of factory control maps for the diesel engine,
• proper cooperation with the automatic transmission,
• compatibility with onboard systems responsible for safety and comfort,
• easier diagnostics using standard service tools.

Thanks to this, the controller can be used both for routine repairs and for more complex service work related to the powertrain.

Application in a diesel engine with an automatic transmission

Diesel units in modern Audi SUVs require precise management of operating parameters, especially when combined with an automatic transmission. This controller has been designed to work with the diesel engine and the automatic drivetrain, allowing for:

• smooth gear shifts thanks to coordinated ECU and transmission operation,
• maintaining appropriate torque across a wide range of loads,
• stable operation at idle and during acceleration,
• effective utilization of the 40 TDI unit's potential in daily use.

Such matching is particularly important in vehicles used intensively, where predictable throttle response and repeatable powertrain behavior are essential.

Product characteristics and condition

The offered controller belongs to the Electronic control modules and controllers category and comes from an Audi vehicle. The product is used, which in practice means the possibility of an economical vehicle repair while maintaining the manufacturer's original specifications. For workshops and individual users, this represents a cost-effective solution while maintaining high compatibility with the factory installation.

Before installation, a standard diagnostic procedure and verification of compatibility with the specific vehicle configuration are recommended, as well as preparation for potential adaptation or programming in accordance with the requirements of the given Audi Q5 unit.

Selecting a used ECU and additional materials

When selecting a used engine controller, it is crucial to match it to the fuel type, transmission type, and vehicle electronics architecture. A properly selected module helps avoid problems with starting the engine, communication errors with other controllers, and malfunctions of driver assistance systems.

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 control modules, auxiliary controllers, or electronic management units, check the available parts in the Audi electronic control modules and controllers category.

To better assess when choosing a used engine controller is justified and how to safely select such a component for your car, it is worth reading the guide: Second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?