BMW E87 E90 120i 320i N46 150HP ECU Kit DME 7552176 CAS2 + Key Manual

BMW E87 E90 120i 320i N46 150HP ECU Kit DME CAS2 + Key Manual is a complete engine control set designed for selected BMW 1 and 3 Series models with the 150 HP N46 engine and manual transmission. The set includes the DME engine control unit, the CAS2 module, and a matched key, which facilitates restoring the proper operation of the electronic system after a failure or engine replacement. It is a practical solution for workshops and users looking for a consistent, factory-spec engine electronics package.

Specifications and technical data

• SKU: 7552176-10
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7552176
• Substitutable numbers: 118i 318i, 12147552177 12147552176 12147550535, 12147550534 12147545043 12147545042, 12147531846, 7552177 7552176 7550535 7550534 754504 75450423, 7531846, 12147557291, 7557291, 61356964051, 6964051, 0261208582, 0 261 208 582
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Application and compatibility

The ECU DME set with the CAS2 module and key is intended for BMW 1 Series E87 and 3 Series E90 cars in 120i and 320i versions with the 150 HP N46 engine. By coordinating the components into a single package, it simplifies the replacement of the complete engine control system in vehicles equipped with a manual transmission, minimizing the risk of electronics matching issues.

Set construction and function of individual elements

The set includes the DME engine control unit responsible for managing the N46 unit, the CAS2 module serving as an anti-theft security feature, and a key matched to this module. This configuration ensures the consistency of immobilizer data and allows for smooth vehicle startup after installation, without the need for time-consuming programming of individual components.

Combining these elements into one package is particularly beneficial when replacing a damaged controller, dealing with communication issues in the vehicle's starting system, or during an engine swap, where electronics compatibility with the specific drivetrain configuration is crucial.

Benefits of using a used ECU DME CAS2 + key set

A used ECU DME set with the CAS2 module and key allows for a significant reduction in repair costs compared to purchasing new components from an authorized dealer, while maintaining the original BMW electronic architecture. This type of set is particularly valued by workshops specializing in the BMW brand because it:

• simplifies the diagnostic and vehicle startup process after controller replacement,
• limits the number of potential points of incompatibility in the immobilizer system,
• enables the preservation of the factory operating logic of the 150 HP N46 unit.

For the end user, this means a faster return of the car to full efficiency and stable operation of the electronic system after the repair.

Professional use in BMW service

The ECU DME CAS2 + key set works well in professional service centers dealing with BMW electronics, where repeatability of results and the ability to quickly restore proper communication between the engine controller and the security module are essential. Thanks to the completeness of the package, the number of additional programming steps can be reduced, allowing the focus to remain on proper installation and configuration for the specific vehicle.

If you want to better understand how to effectively service BMW engine controllers and other electronic modules using salvaged parts, it is worth reading the guide: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 Series models.

Expanding the control system in BMW

In the case of extensive repairs to the BMW engine electronic system, such as replacing multiple modules or rebuilding the wiring within the engine bay, additional elements from the same group that work with the DME and CAS2 are often needed. If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional controllers, auxiliary modules, or dedicated control units, check the available parts in the BMW electronic control modules and controllers category.

Summary

BMW E87 E90 120i 320i N46 150HP ECU Kit DME CAS2 + Key Manual is a practical, consistent engine electronics set designed for specific BMW 1 and 3 Series versions with manual transmission. Combining the DME controller, CAS2 module, and key into one package facilitates repairs, shortens vehicle downtime, and allows for maintaining the N46 unit's performance characteristics in accordance with the manufacturer's factory specifications.