BMW Z4 Series E85 Roadster 2.2i M54 170HP ECU Kit DME + EWS3 + 2 Keys Manual

BMW Z4 Series E85 Roadster 2.2i M54 170HP ECU Kit DME + EWS3 + 2 Keys Manual is a cohesive electronic control package designed for vehicles with a manual transmission. The set enables professional replacement of the engine control unit along with the immobilizer module and programmed keys, which significantly simplifies the vehicle startup process after repairs or conversions.

Specifications and technical data

• SKU: 7537804-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7537804
• Substitutable numbers: 32306766488, 6766488, 32306777329, 6777329, 32306772422, 6772422, 32306766417, 6766417, 32306773613, 6773613, 32306762586, 6762586, 12147533651, 7533651, 12147561454, 7561454, 12147541493, 7541493, 12147536136, 7536136, 12147547674, 12147543031, 12147537804, 32307197
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and configuration of the set

The presented ECU set is dedicated to the BMW Z4 Series E85 Roadster 2.2i M54 170HP ECU Kit DME + EWS3 + 2 Keys Manual equipped with a manual transmission. The set includes the DME engine control unit, the EWS3 module, and two keys matched to this configuration, which allows for maintaining the consistency of the security and powertrain control system.

This solution is particularly beneficial when replacing a damaged control unit, performing post-accident repairs, or restoring a vehicle to full functionality after immobilizer issues. The set comes from the Electronic control modules and ECUs category, making it a logical choice for work related to engine electronics.

Benefits of using a complete ECU set

Using a ready-made DME + EWS3 + keys package reduces the need for time-consuming programming and matching of individual components in the workshop. In practice, this means:

• maintaining compatibility between the engine control unit and the immobilizer,
• the ability to efficiently start the M54 unit after installation,
• reduction of communication error risks in the vehicle's bus,
• time savings during diagnostics and configuration.

For workshops specializing in the BMW brand and for advanced users, this is a technically organized solution that is convenient for further service maintenance.

Application in vehicles with manual transmission

The set has been prepared for vehicles equipped with a manual transmission. This is important both for the logic of the engine control unit's operation and for cooperation with other modules in the vehicle. Proper matching to the transmission type minimizes the need for additional software modifications and facilitates integration with the existing electrical installation.

When selecting electronic control components for the BMW Z4 E85, it is crucial to maintain consistency between the control unit, the security system, and the powertrain configuration – this set has been compiled with exactly that in mind.

Product characteristics and selection by part numbers

The offered set comes from the line of original BMW solutions and is assigned to a specific OEM part number and related interchangeable numbers, which facilitates precise identification in service catalogs. Thanks to this, you can verify compatibility with a specific vehicle equipment version using the manufacturer's documentation or online catalogs.

Before purchasing, it is recommended to compare vehicle data (model, generation, engine, transmission type) with technical information and – if necessary – consult an automotive electrician to ensure full compatibility with the existing installation.

Professional approach to used electronics

Choosing a used ECU set for a BMW allows for significantly lower repair costs while maintaining the original control system architecture. A properly selected DME + EWS3 + keys set is a solution often used in professional services dealing with automotive electronics, especially in the case of models with the M54 engine.

To better understand the principles of selecting and installing such components, it is worth reading the guide describing the practical aspects of purchasing and installing used control modules – they are discussed in detail in the article Used automotive electronics – second-hand ECU modules and sensors, prepared as a guide to compatibility, OEM markings, and installation procedures.

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