BMW E87 E90 N46 118i 318i 129HP ECU KIT DME CAS2 + 2 Keys 7561834 Manual

BMW E87 E90 N46 118i 318i 129HP ECU KIT DME CAS2 + 2 Keys Manual is a complete engine control and immobilizer kit designed for selected BMW 1 and 3 Series models with the N46 engine and manual transmission. The set includes the DME engine control unit, the CAS2 module, and two matched keys, which facilitates the transfer of the full electronic configuration between vehicles. This kit is particularly useful for professional replacement of a damaged ECU or for advanced service work on vehicle electronics.

Specifications and technical data

• SKU: 7561834-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561834
• Substitutable numbers: 12147565301, 7565301, 12147561834, 7561834, 61356943791, 6943791, 0261201159
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Application of the ECU DME CAS2 kit

The presented kit is dedicated to BMW E87 and E90 series cars with the N46 engine in 118i and 318i versions with a factory output of 129 HP, equipped with a manual transmission. Combining the DME controller with the CAS2 module and paired keys allows for maintaining the consistency of the security system, which is important both for proper engine starting and for the stable operation of the entire electronic system. A kit of this type is particularly valued in workshops specializing in the BMW brand, as it enables efficient replacement of a damaged controller without the need for time-consuming programming from scratch. Thanks to the maintained compatibility of the components, it is possible to reduce the risk of conflicts between modules and shorten vehicle downtime.

Construction and function of individual components

The kit includes a DME engine controller responsible for precise management of the N46 unit's operation, including fuel dosing, ignition, and cooperation with other vehicle systems. The CAS2 module acts as the central element of the immobilizer system, communicating with both the DME and the keys, which ensures start authorization. The two included keys are electronically linked to the CAS2 module, which allows for maintaining the original functionality of the vehicle's security features after transferring the kit. Such a configuration is beneficial when replacing the set in cars where there has been a controller failure or problems with communication between modules.

Benefits of using an original BMW kit

The original kit from the Electronic control modules and ECUs group ensures high compatibility with the factory BMW electrical installation, which translates into stable operation of on-board systems. Using the DME + CAS2 + keys set minimizes the need for additional wiring modifications or mechanical adaptations, which is important from the point of view of repair quality. The used product allows for an economical restoration of vehicle efficiency while maintaining the original electronic architecture. For workshops and individual users, this means the possibility of performing an advanced repair within a controlled budget, without giving up on BMW's factory design solutions.

Professional use and selection of electronics

When selecting an ECU kit for a specific BMW unit, it is crucial to match the engine type, vehicle generation, and transmission type. In the case of the N46 unit and manual transmission, such a set allows for a consistent transfer of control logic and immobilizer configuration. The kit will work well both when replacing a damaged controller and for more complex service projects where full compatibility between modules is required. To better understand when choosing a used engine controller and CAS module is justified, it is worth reading the guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?. The article helps to assess the cost-effectiveness of such solutions and draws attention to technical issues important when purchasing.

Expanding work in the area of BMW electronics

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, body modules, or engine management systems, check out the available parts in the BMW electronic control modules and ECUs category.