Volkswagen Golf VII 1.4 TSI CXSA Engine Control Unit ECU Kit 04E907309A Manual

Volkswagen Golf VII 1.4 TSI CXSA Engine Control Unit ECU Kit is a set from the Electronic control modules and controllers group, designed for the 1.4 TSI CXSA petrol engine with a manual transmission. The kit ensures precise engine operation control, stable communication with the vehicle's electrical system, and the possibility of professional repair or replacement of the factory ECU in your Golf VII.

Specifications and technical data

• SKU: 04E907309A-2
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 04E907309A
• Substitutable numbers: 04E907309A, 04E 907 309 A, 04E906016DE, 04E 906 016 DE, 0261S07726, 0 261 S07 726, 5Q0937084AG, 5Q0 937 084 AG, 5WK50891
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the ECU kit

The presented ECU kit is designed to work with the 1.4 TSI petrol engine with the CXSA code in a Volkswagen Golf VII equipped with a manual transmission. It is responsible for managing fuel injection, ignition, and key engine operating parameters, which translates into proper dynamics, smooth operation, and fuel efficiency.

As an item from the Electronic control modules and controllers category, the kit integrates with the vehicle's onboard network, working with other modules and sensors. This makes it possible to maintain consistent diagnostics, correct operation of safety systems, and compliance with the manufacturer's factory settings.

Compatibility and replacement numbers

The ECU kit has a dedicated OEM part number and assigned interchangeable numbers, which facilitates the selection of the correct component based on service documentation or data from the existing controller. The presence of multiple reference numbers increases the chance of matching the specific equipment configuration of your Golf VII while maintaining hardware and software compatibility.

Before purchasing, it is worth verifying compatibility by OEM number, replacement numbers, or the vehicle's VIN. This allows you to avoid problems with CAN network communication, engine control errors, or the need for additional programming beyond standard adaptation procedures.

Technical characteristics and application

The ECU kit is intended for petrol-powered vehicles equipped with a manual transmission. This configuration means that the control algorithms are adapted to the characteristics of the TSI unit and manual gear shifting, which is important for the proper operation of functions such as torque control, throttle response, and cooperation with driver assistance systems.

In practice, this means that after correct installation and adaptation, the controller can restore full functionality of the powertrain in the event of a failure of the previous module, ECU communication problems, or damage resulting from electrical surges.

Condition, verification, and installation

The offered ECU kit comes from the secondary market and is a used component, which in many cases is a cost-effective solution while maintaining the original manufacturer's specification. Before installation, it is recommended to perform vehicle computer diagnostics and plan coding or adaptation procedures in accordance with Volkswagen service guidelines.

To maximize the potential of a used controller, it is worth using the services of a workshop with experience in working with VAG electronics, including immobilizer programming, equipment configuration matching, and post-installation testing.

Expert support and selection of used electronics

If you want to better understand how to safely choose used control modules and sensors, how to check hardware and software compatibility, and what to pay attention to during installation, check out the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

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