BMW 3 5 Series E60 E90 E91 N52 325i 525i ECU Kit DME CAS2 Key 7552393 Automatic

BMW 3 5 Series E60 E90 E91 N52 325i 525i ECU Kit DME CAS2 Key is a complete set of electronic components designed for vehicles with an automatic transmission. Thanks to the factory configuration for the N52 unit and integration with the CAS2 system, the kit provides a coherent solution for repairing or replacing the engine control system in BMW 325i and 525i models.

Specifications and technical data

• SKU: 7552393
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7552393
• Substitutable numbers: 12147577970, 7577970, 12147552393, 7552393, 61356964051, 6964051, 5WK90075
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the BMW 3 5 Series E60 E90 E91 N52 325i 525i ECU Kit DME CAS2 Key

The presented kit includes the DME engine control unit, the CAS2 module, and a matched key, which allows for maintaining compatibility between the engine control system and the start authorization system. This combination is particularly important for N52 units in BMW 3 and 5 Series, where communication between modules takes place via a digital bus and requires matched components. The set is prepared for use in cars with an automatic transmission, which is essential for the proper cooperation of the engine controller with the transmission electronics. Using a single, coherent set minimizes the risk of synchronization problems, immobilizer errors, or improper operation of the power unit.

Benefits of using the complete BMW 3 5 Series E60 E90 E91 N52 325i 525i ECU Kit DME CAS2 Key

Choosing the complete BMW 3 5 Series E60 E90 E91 N52 325i 525i ECU Kit DME CAS2 Key for BMW 3 and 5 Series with the N52 engine brings a number of practical benefits in the repair process:

• maintaining compatibility between the engine controller, CAS2 module, and key,
• reducing the need for advanced programming and adaptation,
• consistent cooperation with the automatic transmission,
• the ability to restore proper starting and operation of the N52 unit after the failure of the original controller. For workshops specializing in the BMW brand and users looking for a service solution, such a kit provides a practical base for restoring full functionality of the powertrain without the need to collect components from different sources.

Application in BMW 3 and 5 Series with N52 engine

The kit has been developed for BMW 3 and 5 Series vehicles equipped with the N52 engine in 325i and 525i versions. Integrating the DME controller with the CAS2 module and key is crucial in these models because the vehicle's security system is based on mutual module authentication. Using the complete kit allows for:

• stable communication between engine electronics and the security system,
• reduction of problems with start errors and immobilizer locks,
• easier diagnostics and configuration compared to replacing a single module. Such a solution is particularly useful for more serious electronic failures when it is necessary to replace more than one element of the control system.

Category characteristics: Electronic control modules and controllers

The product belongs to the Electronic control modules and controllers category, which is a group of components responsible for managing the operation of key vehicle systems. In the case of N52 units in BMW 3 and 5 Series, the DME controller is responsible for precise control of fuel dosage, ignition, and cooperation with other modules, while the CAS2 controls start authorization and communication with the key. 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 additional controllers, security modules, or engine management systems, check the available parts in the BMW electronic control modules and controllers category.

Product condition and practical installation tips

The offered kit comes from the secondary market, which makes it an attractive cost-effective solution while maintaining the original manufacturer's specification. Before installation, a standard diagnostic procedure and verification of compatibility with the specific vehicle configuration are recommended, particularly in terms of the engine version and the automatic transmission used. In many cases, installing such a kit requires cooperation with a service center equipped with appropriate BMW diagnostic software to carry out any necessary adaptations and functional tests. This allows you to fully utilize the potential of the factory control electronics and ensure stable operation of the power unit.

More about used automotive electronics

If you are considering using used engine controllers, comfort modules, or other electronic components, it is worth familiarizing yourself with practical tips regarding selection and installation. Detailed information can be found in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, where issues such as compatibility, diagnostics, and the cost-effectiveness of such solutions are discussed.