Seat Alhambra 7N Control Unit ECU 150 HP 2.0 Diesel 04L907309K Manual

Seat Alhambra 7N Control Unit ECU 150 HP 2.0 Diesel Manual is a factory-original module from the Electronic control modules and ECUs group, designed for diesel systems with a manual transmission. It is responsible for the precise management of the engine's operation, ensuring stable engine characteristics, correct fuel metering, and seamless integration with other vehicle systems.

Specifications and technical data

• SKU: 04L907309K-3
• Mark: Seat
• Condition: Used
• OEM Part Number: 04L907309K
• Substitutable numbers: 04L907309K, 04L 907 309 K
• Fuel type: Diesel
• Gearbox type: Manual
• Part type: Engine Control Unit (ECU)
• Category: ECUs & Computer Modules

Purpose and function of the engine control unit

The engine control unit in the Seat Alhambra 7N model with a 2.0 TDI 150 HP engine is the central component of the diesel management system. It analyzes signals from sensors, controls fuel injection, boost pressure, and auxiliary systems, and monitors parameters necessary to maintain proper engine dynamics and smooth operation. As a result, the vehicle maintains stable performance, and the throttle response remains predictable and consistent.

Compatibility with the diesel system and manual transmission

The presented ECU module is configured to work with a diesel engine and a manual transmission. This means that the control logic has been prepared for the torque characteristics typical of TDI units and the power delivery method of a manual gearbox. In practice, this translates into:

• smooth torque delivery across the entire rev range,
• consistent operation with control maps for manual transmissions,
• proper cooperation with onboard systems dependent on the ECU.

Characteristics of the used product

As a used component, this engine control unit comes from disassembly and is intended for reinstallation after being properly matched to a specific vehicle. Such modules are a popular choice for repairs when replacing the ECU with an original part is necessary, and optimizing service costs is also important. In many cases, this allows for restoring full functionality of the engine control system without the need to invest in a new component.

Selection by part numbers and vehicle integration

Control units in this group are identified by OEM numbers and interchangeable part numbers, which facilitates precise matching to a specific equipment version and software. When selecting, it is recommended to verify compatibility based on part numbers and vehicle configuration to ensure proper communication with the electrical system, sensors, and other modules. In many cases, programming or adaptation in the vehicle is required after installation, performed using appropriate diagnostic equipment.

Technical support and selecting a used ECU

If you want to better understand how to safely choose used control modules, what to look for regarding hardware and software compatibility, and what the installation and adaptation process looks like, check out our guide: Used automotive electronics – ECU modules and second-hand sensors. You will find practical tips on selecting parts based on OEM numbers, VIN, and answers to the most frequently asked questions related to engine electronics.

Expanding the control system for the Seat brand

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