BMW E81 E87 LCI E90 116i 316i N45N ECU Kit DME CAS3 + Key 7581848

BMW E81 E87 LCI E90 116i 316i N45N ECU Kit DME CAS3 + Key is a complete electronic set designed for engine control systems in selected BMW 1 and 3 series models. The set includes a DME controller, a CAS3 module, and a matched key, which facilitates professional replacement of the entire control package without the need for time-consuming programming from scratch. This solution is particularly useful in the event of an original ECU failure or immobilizer issues, where component consistency and stable engine performance are essential.

Specifications and technical data

• SKU: 7581848-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7581848
• Substitutable numbers: 12147567321, 7567321, 12147591162, 7591162, 12147591163 12147585435 12147585249, 12147581848, 12147582242 12147581610 12147557951, 12147581609, 7591163 7585435 7585249 7581848, 7582242 7581610 7557951 7581609, 0281015130 61359226238, 0 281 015 130, 9226238
• Category: ECUs & Computer Modules

Application of the ECU DME CAS3 kit with key

The set is designed for BMW vehicles with the N45N engine in 116i and 316i versions, in E81, E87 LCI, and E90 body styles. Combining the DME engine controller with the CAS3 module and a matched key allows for data consistency within the vehicle's security system, minimizing the risk of software conflicts and engine start-up problems.

A set configured in this way is particularly effective in situations where both the controller and the components responsible for start-up authorization have been damaged. Thanks to this ready-to-use package, you can significantly reduce diagnostic and installation time, as well as limit the scope of additional coding work.

Technical and functional characteristics

As an item from the Electronic control modules and controllers group, the set is responsible for precise engine management and communication with the immobilizer system. Integrating the DME with the CAS3 and key ensures:

• consistency of identification data between the engine controller and the comfort/immobilizer module,
• correct start-up authorization without the need to match individual components,
• stable cooperation with the vehicle's electrical system within the factory BMW architecture.

The presence of a dedicated key in the set facilitates the adaptation process in the vehicle, especially in workshops specializing in BMW electronics, where repeatability and predictability of the final result are crucial.

Benefits of using original BMW electronics

Original BMW solutions ensure high compatibility with the vehicle's factory installation and predictable behavior under various operating conditions. Using a complete ECU DME kit with CAS3 and key allows you to:

• reduce the risk of communication errors in the vehicle's bus,
• limit the number of programming interventions during installation,
• maintain engine operating parameters in accordance with the manufacturer's specifications.

A used set of this type is often chosen as an economical alternative to new components, while maintaining the original specification and design. It is a practical solution for workshops and users who want to restore full functionality to the vehicle after an engine electronics failure.

Condition, verification, and selection based on numbers

The item comes from the group of original BMW OE components and is offered as a tested, used set, prepared for further use in compatible models. Before installation, it is recommended to perform a standard verification of compatibility with the specific vehicle equipment version and compare the OEM part number and available interchangeable numbers with the manufacturer's specification.

Thanks to the presence of the OEM part number and an extensive list of reference numbers, it is possible to precisely match the set to a given BMW unit, which reduces the risk of hardware and software incompatibility. This is particularly important for vehicles that have undergone modifications or have different variants of electrical equipment.

Technical support and additional information

If you want to better understand when choosing a used engine controller, comfort module, or sensors is justified and how to safely select such elements for your car, check out our guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?

If you are planning a comprehensive repair or upgrade of the control electronics area in your BMW and need other elements from the same group, such as engine controllers, comfort modules, or light controllers, check out the available parts in the BMW electronic control modules and controllers category.