BMW X3 Series E83 3.0d M57N2 218HP ECU Kit DME + EWS3 + Key 7801217 Automatic

BMW X3 Series E83 3.0d M57N2 218HP ECU Kit DME + EWS3 + Key is a complete engine control and immobilizer kit designed for BMW X3 E83 models equipped with the 3.0d M57N2 218HP engine and an automatic transmission. The kit includes the DME engine control unit, the EWS3 module, and a matched key, which significantly facilitates the restoration of the electronic system's functionality. This solution allows for a quick, technically correct replacement of the control electronics without the need for costly programming from scratch.

Specifications and technical data

• SKU: 7801217-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7801217
• Substitutable numbers: 13617808222 0281013052 61356988104, 7808222 0 281 013 052 6988104, 13617799856, 13617803369 13617797499 13617805350, 13617801217 13617801712 13617798182, 13617798506 13617799208 13617797247, 7799856, 7803369 7797499 7805350, 7801217 7801712 7798182, 77985
• Gearbox type: Automatic
• Category: Control Modules

Purpose and function of the ECU kit

The presented kit from the Computers and Controllers category is dedicated to BMW X3 E83 vehicles with the 3.0d M57N2 218HP diesel engine, paired with an automatic transmission. The DME controller is responsible for precise management of the powertrain, including fuel dosing, boost control, and engine parameter monitoring, while the EWS3 module and the key ensure the integrity of the vehicle's security system.

Benefits of using a complete DME + EWS3 + key kit

Using a complete engine control unit kit with an immobilizer module and key significantly simplifies the electronic system repair process. In practice, this means:

• component consistency – the DME, EWS3, and key are factory-synchronized,
• reducing the scope of programming to the absolute minimum,
• easier diagnostics and configuration compared to sourcing individual modules,
• maintaining proper cooperation with the automatic transmission.

For workshops specializing in the BMW brand and users who care about the efficiency of their powertrain, this is a practical and effective service solution.

Technical characteristics and compatibility

The kit has been designed as an original BMW electronic component, which translates into a proper fit for the vehicle's electrical installation and communication network architecture. The DME controller works with the automatic transmission, taking into account its operating modes and engine load, while the EWS3 module integrates security functions with the starting system. The presence of the OEM part number and an extensive list of interchangeable numbers (visible in the specification) facilitates precise verification of compatibility with a specific car configuration.

Condition, service application, and selection of used electronics

This item comes from the group of used BMW computers and controllers, making it an attractive cost-effective alternative to new components while maintaining factory design and operational logic. This type of kit is particularly useful in situations where the engine controller has been damaged, there are issues with the immobilizer, or repairing the existing electronics is not cost-effective.

To better understand when choosing a used engine controller, comfort module, or parking sensor is justified and how to properly select such components, it is worth reading our guide: A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?

Expanding repairs in the area of BMW electronics

If you are planning a comprehensive repair or upgrade of the control electronics in your BMW and need other elements from the same group, such as engine controllers, body modules, or transmission control units, check out the available parts in the BMW Computers and Controllers category.