Audi A3 8V 2.0 TDI 150HP Engine ECU Kit Ignition With Key Automat 04L907309A

Audi A3 8V 2.0 TDI 150HP Engine ECU Kit Ignition With Key Automat is a set from the Electronic control modules and controllers group, designed for advanced control of the powertrain and the vehicle's ignition system. The kit combines the ECU module, ignition switch, and key, which facilitates the electronic matching of components and allows for efficient operation of the powertrain.

Specifications and technical data

• SKU: 04L907309A-4
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L907309A
• Substitutable numbers: 04L907309A, 04L 907 309 A, 0281018526, 0 281 018 526, 5Q0905865AG, 5Q0 905 865 AG
• Gearbox type: Manual
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and function of the kit

The presented kit has been developed for the Audi A3 8V model with a 2.0 TDI engine with 150 HP. The set is responsible for precise engine operation control, communication with other vehicle modules, and handling the starting procedure via the integrated ignition switch with key. As a result, all components work together in a consistent manner, which reduces the risk of issues with the immobilizer or electronics synchronization. This solution is particularly useful when replacing a damaged engine controller or during electrical system repairs, where component compatibility within a single vehicle is crucial.

Compatibility and powertrain

The ECU kit with ignition switch and key is prepared to work with the Audi A3 8V 2.0 TDI 150 HP powertrain. Using it in a vehicle with an automatic transmission allows for maintaining the correct engine control logic and communication with other modules responsible for the drive. The set is an element of the original Audi electronic architecture, which helps maintain the factory characteristics of the powertrain's operation. Before installation, it is recommended to verify compatibility with the specific vehicle configuration and perform appropriate adaptation procedures in the diagnostic system.

Benefits of using the original ECU + ignition switch + key kit

Using a complete kit brings a number of practical advantages in the service and operation process:

• consistency of the engine control electronics and the vehicle ignition system,
• reduction of problems with the immobilizer and key matching,
• maintaining the 2.0 TDI unit's operating characteristics in accordance with the manufacturer's specifications,
• facilitating workshop work when replacing a damaged controller or ignition switch components,
• possibility of restoring the vehicle's correct functionality without the need for deep modifications to the installation. For the user, this means stable powertrain operation and predictable vehicle behavior in daily use.

Condition, origin, and service application

The offered kit comes from the Audi brand and is an element of the vehicle's original electronic architecture. As a used part, it is an attractive solution for those who want to optimize repair costs while maintaining an appropriate level of quality and compatibility. This type of kit is often chosen by workshops specializing in automotive electronics, where both functionality and the possibility of efficient installation are important. In practice, the kit will work well when replacing a damaged ECU, dealing with vehicle starting problems, or when it is necessary to restore correct communication between the engine controller, the ignition switch, and the key.

Expanding knowledge and selecting Audi electronics

If you want to better understand how original electronic modules, such as engine controllers, MMI systems, or interior equipment elements, influence the driving character and perception of the car, it is worth checking out our guide material. Practical tips on selecting used components and maintaining the consistency of factory solutions can be found in the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?. If you are planning a comprehensive repair or upgrade of the control electronics area in your Audi and need other elements from the same group, such as engine controllers, comfort modules, or safety system control units, check out the available parts in the Audi electronic control modules and controllers category.