BMW E60 E90 325i 525i N52 218HP Engine ECU Kit DME 7561684 CAS2 + 2 Keys Automat

BMW E60 E90 325i 525i N52 218HP Engine ECU Kit DME CAS2 + 2 Keys Automat is a complete electronic set from the Electronic control modules and controllers category, designed for the 218 HP N52 engine in BMW 3 and 5 series models. It includes the DME engine control unit, CAS2 module, and two keys, allowing for a consistent, professional replacement of the entire powertrain control system in automatic transmission versions.

Specifications and technical data

• SKU: 7561684-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561684
• Substitutable numbers: 12147577970, 7577970, 12147561684, 7561684, 5WK98084, 61356943791, 6943791
• Category: ECUs & Computer Modules

Purpose of the BMW N52 218 HP ECU DME CAS2 kit

The offered set is dedicated to the 218 HP N52 petrol engine used in BMW E60 and E90 models in 325i and 525i versions with an automatic transmission. Combining the DME engine controller with the CAS2 module and matched keys ensures the consistency of the immobilizer system and starting logic, which significantly facilitates vehicle adaptation and reduces the need for complex programming.

Kit construction and key electronic components

The set includes the DME engine controller responsible for managing the powertrain, the CAS2 module handling key authorization, the immobilizer, and the start signal, as well as two keys matched to this set. This configuration allows for maintaining the integrity of the security system and communication within the vehicle's bus, which is particularly important in modern BMW designs.

By using original BMW components from the Electronic control modules and controllers category, compatibility with the vehicle's factory electrical architecture is maintained, and the risk of software conflicts and communication errors between modules is reduced.

Benefits of using the complete DME + CAS2 + keys set

Choosing a complete ECU set with a CAS2 module and keys is a particularly beneficial solution for major engine electronics failures or immobilizer issues. Instead of selecting individual components and matching them each time, you receive a coherent package that:

• simplifies the installation and configuration process in the workshop,
• reduces diagnostic time related to module incompatibility,
• ensures uniform security and starting logic,
• facilitates restoring proper engine operation after the original controller is damaged.

For vehicles used intensively or those that have had previous electrical system modifications, using such a set allows for an orderly reconstruction of a key part of the electronic system.

Used product characteristics and installation aspects

The offered set is a used item, which in the case of BMW electronics often represents a reasonable compromise between cost and functionality. With proper selection for the specific vehicle configuration and professional installation at a specialized service center, such a set allows for effectively solving problems with starting, engine controller errors, or inconsistent immobilizer system operation.

Installation by a workshop with experience in BMW electronics, access to appropriate diagnostic software, and knowledge regarding the adaptation of DME controllers and CAS2 modules is recommended. This allows for the correct execution of initialization, synchronization, and any necessary software update procedures.

More solutions from the BMW Electronic control modules and controllers category

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

How to consciously choose used BMW electronics

When selecting a used ECU set for a BMW, it is worth paying attention to compatibility with the engine type, vehicle generation, and transmission version, as well as the possibility of correct adaptation in a specific car. Additional tips regarding assessing the condition of electronics, how to verify compatibility, and good installation practices can be found in the article A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.