BMW E60 520i M54 170HP Engine Control ECU Kit DME 7549387 CAS2 Keys Automatic

BMW E60 520i M54 170HP Engine Control ECU Kit DME CAS2 Keys Automatic is an electronic set designed for vehicles with an automatic transmission, including the DME controller, CAS2 module, and keys. It is a practical service solution for BMW users who need a coherent, factory-tuned control package for the 170 HP M54 engine unit.

Specifications and technical data

• SKU: 7549387-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7549387
• Substitutable numbers: 12147549390, 12147549387, 5WK93024, 61356943854, 6943854
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application and function of the ECU DME + CAS2 + keys kit

The presented kit belongs to the Electronic control modules and controllers group and is designed to support the M54 petrol engine in the BMW 5 Series E60 520i. Combining the DME controller with the CAS2 module and matched keys ensures consistent operation of the starting system, immobilizer, and engine management in one compatible package.

The set is configured for an automatic transmission, which is crucial for the proper cooperation of the engine controller with gear shift logic, torque control, and vehicle safety systems.

Benefits of using a complete control kit

Choosing a complete ECU DME kit with the CAS2 module and keys allows you to reduce the time and complexity of workshop tasks. Instead of programming individual components from scratch, the mechanic receives a coherent package in which:

• the engine controller, CAS2 module, and keys are matched in terms of the immobilizer,
• compatibility of the operating logic with the M54 unit is maintained,
• cooperation with the automatic transmission is included.

For the user, this means a better chance of quickly restoring proper starting and stable operation of the power unit after the failure of the original controller or problems with the CAS system.

Product characteristics and condition

The offered kit comes from the BMW brand and is an element of the vehicle's original electronic architecture. Thanks to this, the factory control logic is maintained, as well as compatibility with the electrical installation and other modules in the car.

The product is in used condition, which in practice means it comes from vehicle dismantling and is intended for re-installation after verification by a workshop. This type of solution is often chosen as an economical alternative to new controllers, while maintaining the manufacturer's original specifications.

Installation and service tips

Due to the connection of the DME controller, CAS2 module, and keys with the vehicle's security system, it is worth entrusting the installation of the kit to a specialized service that will:

• check the compatibility of the kit with a specific version of the BMW E60 520i M54,
• verify communication with other modules in the vehicle,
• perform any necessary diagnostic adaptations after installation.

Professional connection and post-installation tests minimize the risk of CAN communication errors, starting problems, or improper operation of the automatic transmission.

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

More about the role of original controllers in modern cars

Modern cars, such as the BMW E60, rely heavily on advanced electronics. Properly selected, original control modules help maintain the driving character and predictability of the vehicle's reactions. If you are interested in how similar solutions affect the behavior of other premium brands, it is worth reading the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which shows the importance of properly selected, original electronic components.

Summary

The ECU DME kit with the CAS2 module and keys for the BMW E60 520i M54 170HP with an automatic transmission is a practical solution for drivers and workshops that want to restore efficient operation of the starting and engine control system while maintaining factory operating logic. As an original BMW brand element, the kit ensures consistency with the vehicle's electronic architecture and provides a solid foundation for professional repair of the power unit control system.