BMW E90 E91 LCI 325i N53 218HP Engine ECU Kit DME 7592080 CAS3 Key Automatic

BMW E90 E91 LCI 325i N53 218HP Engine ECU Kit DME CAS3 Key Automatic is a complete electronic set designed to control the powertrain in BMW 3 Series E90/LCI E91 models. It includes the DME engine control unit along with the CAS3 module and a matched key, which facilitates restoring the proper operation of the drivetrain after an electronics failure. This solution is particularly useful when replacing a damaged control unit in cars equipped with an automatic transmission.

Specifications and technical data

• SKU: 7592080-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7592080
• Substitutable numbers: 12147616431, 7616431, 12147592080, 7592080, 5WK93724, 61359147226, 9147226
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU kit

The ECU DME kit with the CAS3 module and key is responsible for comprehensive control of the N53 petrol engine operation and start authorization within the BMW immobilizer system. Once correctly matched to the vehicle, it enables:

• proper management of fuel injection and ignition,
• communication with the automatic transmission,
• cooperation with the CAS3 security system and the key,
• integration with the vehicle's CAN network.

As a result, this kit provides a coherent engine electronics package, minimizing issues with coding and matching individual modules.

Benefits of using a complete DME + CAS3 + key kit

Compared to replacing a single control unit, the complete ECU kit with the CAS3 module and key significantly simplifies the service process. A mechanic or automotive electronics specialist receives a pre-tuned package, which can reduce:

• the time required for programming and module synchronization,
• the risk of conflicts between the engine control unit and the immobilizer system,
• the need for deep interference with the vehicle's software.

For the user, this means a faster return of the car to working order and a more predictable repair process, especially in the case of the advanced electronics used in the BMW 3 Series.

Compatibility with automatic transmission

The presented kit is intended for cars with an automatic transmission, which is crucial for the proper cooperation of the engine control unit with the transmission control module. The appropriate software and DME configuration allow for:

• smooth torque transfer,
• proper gear shifting strategies,
• stable communication between the engine control unit and the transmission system.

Thanks to this, the kit is particularly valuable when replacing electronics in BMW E90/E91 LCI 325i units, where compliance with a specific drivetrain configuration is required.

Characteristics as an element in the Electronic control modules and controllers category

The product belongs to the Electronic control modules and controllers group, which are key components responsible for the vehicle's logic. In the case of the BMW 3 Series, the ECU DME kit with CAS3 and key acts as the central point for managing engine operation and start authorization. As a used item, it comes from an original BMW installation, which helps maintain the factory performance characteristics of the powertrain after proper installation and configuration.

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

What to pay attention to when choosing a used ECU kit

When selecting a used ECU DME kit with CAS3 and key for a BMW E90/E91 LCI 325i N53, it is worth consulting an experienced electronics specialist or a workshop specializing in the BMW brand. It is essential to verify software compatibility, engine version, and vehicle equipment configuration. Practical tips on purchasing used electronics, described in more detail in the article A second life for electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?, may also be helpful.

If you want to better plan your repair budget and understand how used OEM parts help reduce service costs without sacrificing quality, check out the guide Rising repair costs and the boom in used parts – how to save on car service?, which discusses practical strategies for choosing parts from the secondary market.

Summary

BMW E90 E91 LCI 325i N53 218HP Engine ECU Kit DME CAS3 Key Automatic is a coherent engine electronics kit designed for cars with an automatic transmission, facilitating the replacement of a damaged control unit in advanced BMW systems. Once correctly matched to a specific vehicle, it allows for the restoration of proper engine and immobilizer system operation, providing a functional service solution in the control electronics segment.