BMW 3 5 Series E60 E90 E91 330i 530i N52 Engine ECU Kit DME CAS2 Key 7561684

BMW 3 5 Series E60 E90 E91 330i 530i N52 Engine ECU Kit DME CAS2 Key is a complete, factory electronic package designed for BMW 3 and 5 Series models with the N52 engine. In one set, you receive the DME engine control unit, the CAS2 module, and a matched key, which significantly facilitates professional repair of the engine management system. This is a practical solution for workshops and users who want to restore the proper operation of engine electronics while maintaining system compatibility.

Specifications and technical data

• SKU: 7561684-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561684
• Substitutable numbers: 12147577970, 7577970, 12147561684, 7561684, 5WK98084, 61356943791, 6943791
• Category: ECUs & Computer Modules

Purpose and function of the kit

The presented kit from the Electronic control modules and ECUs category has been developed for BMW E60, E90, and E91 vehicles in 330i and 530i versions with the N52 petrol engine. The combination of the DME engine control unit, CAS2 module, and key enables consistent management of engine operation, the immobilizer, and start authorization, minimizing the risk of issues with matching individual components. A package configured in this way allows for efficient replacement of a damaged engine control system in situations where repairing a single module is uneconomical or technically difficult. The kit is particularly useful for advanced diagnostic work and restoring full vehicle functionality after an electronics failure.

Benefits of using a complete DME + CAS2 + key kit

Using a complete kit brings a number of practical advantages in daily service work:

• consistency of components responsible for engine control and vehicle security,
• reduction of problems with adaptation and coding between the engine ECU and the CAS2 module,
• possibility of faster vehicle startup after replacing a damaged system,
• better control over the repair process through the use of original BMW solutions. For workshops specializing in the BMW brand, such a kit is a convenient tool for carrying out more demanding engine electronics repairs, and for the vehicle owner – a chance to restore stable engine operation without the need for deep interference in the factory system architecture.

Product characteristics and condition

The offered kit comes from the BMW group and is an element of the original electronic architecture of these models. As a product from the Electronic control modules and ECUs category, it has been designed to work with the vehicle's factory installation, which helps maintain the correct operating parameters of the N52 engine and proper communication with other modules in the vehicle network. The components come from the secondary market (used condition), which allows for economical repair while maintaining the manufacturer's original specifications. Before installation, standard verification and diagnostics at a specialized BMW service center are recommended, as well as matching the configuration to a specific vehicle according to the manufacturer's procedures.

Application in service practice and integration with BMW electronics

In BMW 3 and 5 Series vehicles with the N52 engine, the DME control unit, CAS2 module, and key form an integrated system responsible for:

• managing engine operating parameters (injection, ignition, protection strategies),
• handling the immobilizer and start authorization,
• communication with other modules in the vehicle network. Replacing the entire kit is a common practice in situations where the engine control unit has been damaged or there are synchronization problems between modules. This helps reduce diagnostic time and allows for focusing on correct installation and configuration, which is particularly important in modern vehicles with extensive electronics. If you want to better understand the principles of BMW engine control units, comfort modules, and the iDrive system, and learn best practices for using dismantled parts, check out the article: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 Series models.

Expanding the repair with other BMW modules

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 additional control units, engine management modules, or systems working with the DME, check out the available parts in the BMW electronic control modules and ECUs category.