BMW E60 E90 E91 325i 525i N52 218HP Engine ECU Kit DME 7559178 CAS2 + Key Manual

BMW E60 E90 E91 325i 525i N52 218HP Engine ECU Kit DME CAS2 + Key Manual is a complete engine control kit designed for selected BMW models with the N52 engine, 218 HP output, and a manual transmission. The set includes the DME engine control unit, the CAS2 module, and a matched key, which facilitates restoring the proper operation of the electronic system after a failure or engine replacement. This solution allows for a consistent match of powertrain electronics components in BMW 3 and 5 series vehicles.

Specifications and technical data

• SKU: 7559178-9
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7559178
• Substitutable numbers: 12147577970, 7577970, 12147559178, 7559178, 5WK98081, 61356981416, 6981416
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Application of the ECU DME CAS2 + key kit

The presented kit is intended for BMW E60, E90, and E91 series vehicles with the 218 HP N52 engine and a manual transmission. Combining the DME controller with the CAS2 module and a matched key allows for maintaining the integrity of the immobilizer system and powertrain electronics, which is particularly important when replacing a damaged controller or the complete engine unit.

A set configured in this way helps reduce diagnostic and programming time, as the key components of the system are already synchronized. This is a practical solution for workshops specializing in the BMW brand and for users who want to restore full vehicle functionality after an engine electronics failure.

Technical characteristics and vehicle integration

The kit belongs to the Electronic control modules and controllers group, responsible for precise engine management, starting, and vehicle ignition authorization. The DME controller works with the CAS2 module, which controls vehicle access and key authorization, ensuring the entire system forms a coherent security and control setup.

The set is prepared for use with a manual transmission, which is significant when selecting the appropriate software and control maps. A properly selected ECU kit for a specific engine and transmission configuration minimizes the risk of errors, starting problems, rough engine operation, or fault messages in the CAN network.

Benefits of using an original BMW kit

Choosing an original BMW engine electronics kit ensures factory-fit compatibility with the vehicle's installation and integration with the existing electrical architecture. This makes it possible to maintain full functionality of onboard systems, such as diagnostics, communication with other modules, and security features.

The used product is a reasonable compromise between cost and quality – it allows for restoring vehicle efficiency while maintaining the manufacturer's original specifications. For workshops, this means faster repairs, and for the end user – a lower risk of problems resulting from incorrectly selected replacements.

Selection, reference numbers, and compatibility

This ECU DME kit with the CAS2 module and key has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and selection for a specific BMW unit. When matching, it is worth using the manufacturer's markings as well as the engine and transmission configuration to ensure full compatibility with the vehicle's installation.

If you want to better understand when choosing a used engine controller or comfort module is cost-effective and how to safely select such an element 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?

BMW electronic control modules and controllers – expansion and service

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

Additionally, if you are interested in how the use of original used components affects the durability and precision of Bavarian designs, it is worth reading the article: BMW – sports performance and precision. How do original used parts extend the life of a Bavarian icon?