BMW E60 520i M54 170HP Engine ECU Kit DME + CAS2 + Key 7527072 Automatic

BMW E60 520i M54 170HP Engine ECU Kit DME + CAS2 + Key is a coherent package of original electronics designed for professional maintenance of the powertrain in the BMW 5 Series E60 model. The kit includes the DME engine control unit, the CAS2 module, and a matched key, which facilitates maintaining the consistency of security and communication systems in the vehicle. This solution is particularly useful when replacing a damaged controller or during advanced powertrain repairs.

Specifications and technical data

• SKU: 7527072-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7527072
• Substitutable numbers: 12147527072, 5WK93014, 12147549390, 61356927931, 7527072, 7549390, 6927931
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the BMW E60 520i M54 170HP Engine ECU Kit DME + CAS2 + Key

The presented kit is dedicated to the M54 petrol engine with 170 HP in the BMW 5 Series E60 equipped with an automatic transmission. Combining the DME controller with the CAS2 module and the key allows for maintaining the consistency of the immobilizer system, which significantly simplifies the installation process compared to replacing individual electronic components.

In practice, this means that the engine control system, start authorization, and communication with other vehicle modules are already factory-tuned in one package. For workshops and users, this means a lower risk of matching issues and shorter vehicle downtime.

Benefits of using the original BMW kit

Using a complete engine control unit kit with the CAS2 module and key provides:

• consistency of the vehicle's security and starting system,
• preservation of the factory operating logic of the M54 unit,
• better compatibility with the existing electrical installation,
• reduction of the need for deep software intervention.

For vehicles equipped with an automatic transmission, it is particularly important that the engine controller works correctly with the transmission modules. Using a dedicated kit minimizes the risk of CAN communication errors and improper operation of driving comfort functions.

Application in service practice

This kit from the Electronic control modules and ECUs group will work well in both professional BMW services and specialized independent workshops. It is particularly useful in situations where:

• the original engine controller has suffered electrical or software damage,
• there are problems with CAS–DME synchronization,
• it is necessary to replace the entire set of electronics after a major installation failure.

The complete BMW E60 520i M54 170HP Engine ECU Kit DME + CAS2 + Key allows for reducing the number of variables in the diagnostic and assembly process, which facilitates quick restoration of vehicle efficiency.

Condition, origin, and selection of the appropriate controller

The offered item is used, which in the case of OEM BMW electronics often represents a reasonable compromise between cost and quality. Original modules from dismantling retain factory specifications, and when properly selected for the engine version and transmission type, they can operate stably for a long time.

Before purchasing, it is worth verifying the compatibility of the kit with the specific configuration of the BMW E60 520i M54 170HP, especially in the context of the model year, equipment, and the automatic transmission used. Thanks to this, the installation proceeds more smoothly, and the risk of needing additional programming is limited.

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

More about used BMW electronics

When choosing a used engine controller or a complete ECU kit, it is worth knowing the basic principles of selection and installation to avoid problems with starting the vehicle. Practical tips on assessing the condition of modules, programming issues, and safety can be found in the article: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?

Additionally, if you are interested in a broader context of using original used components in premium cars, it is worth reading the market trend analysis in the material: Crisis in the new parts market? Why in 2026 used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend.