BMW 3 Series E46 320i Petrol M54 170HP ECU Kit DME 7536649 + EWS3 + Key Automati

BMW 3 Series E46 320i Petrol M54 170HP ECU Kit DME + EWS3 + Key Automati is a solution prepared for a quick, technically correct engine control unit replacement. The kit is sourced from a dismantled vehicle, which allows for an economical repair of the electronic system while maintaining original BMW architecture and the consistency of the immobilizer with the control unit.

Specifications and technical data

• SKU: 7536649-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7536649
• Substitutable numbers: 12147551616 12147545422 5WK90019 61356905666, 7551616 7545422 6905666, 12147536649, 12147529824 12147532098 12147531984, 12147511801 12147510596 12147520508, 12147539461 12147529524 12147516450, 12147518883 12147512273 12147536613, 7536649, 7529824 753
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Control Modules

Purpose and configuration of the ECU kit

The presented kit is dedicated to the BMW 3 Series E46 in the 320i version with the 170 HP M54 engine, powered by petrol and equipped with an automatic transmission. It includes the DME engine controller, the EWS3 module, and a matched key, which allows for maintaining the security system compatibility without the need for programming from scratch.

A kit configured in this way allows for the restoration of the original powertrain operating logic, including the controller's cooperation with the automatic transmission, the starting system, and the anti-theft protection. This minimizes the risk of software conflicts and key authorization issues.

Benefits of using the original DME + EWS3 + Key kit

Using a factory control kit in a BMW E46 320i provides a number of practical advantages compared to replacing the controller alone:

• consistency of the DME controller with the EWS3 module and the key transponder,
• reduction of the need for immobilizer adaptation and key synchronization,
• preservation of the M54 engine's 170 HP performance characteristics,
• proper cooperation with the automatic transmission,
• possibility of faster diagnostics and vehicle startup after installation.

For workshops specializing in BMW and for advanced users, this means a more predictable electronic system repair process, without the need for deep software modifications.

Operational characteristics and installation

As an item in the Computers and Controllers category, the BMW 3 Series E46 320i Petrol M54 170HP ECU Kit DME + EWS3 + Key Automati is intended for integration with the vehicle's existing electrical installation. Installation requires standard workshop procedures: removing the old controller, the EWS module, and fitting the key, followed by checking the communication correctness within the vehicle's network.

The used condition means that the components come from an operational car, which in practice allows for maintaining original operating parameters while reducing costs compared to new parts. After installation, it is recommended to perform computer diagnostics to verify errors and perform any necessary adaptation to the specific car configuration.

Selection and compatibility of BMW electronics

When selecting an engine controller for a BMW E46 320i, it is crucial to match it to the fuel type, engine version, and transmission type. This kit has been prepared specifically for the M54 petrol unit working with an automatic transmission, which significantly facilitates the choice of the right set for a specific car configuration.

If you want to better understand when choosing a used engine controller makes sense and how to safely select electronics for your car, check out the guide A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, where you will find practical tips on purchasing and verifying such elements.

Expanding repairs in the area of BMW engine control

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