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

Description

BMW E87 E90 N46 118i 318i 129HP ECU KIT DME CAS2 + 2 Keys Manual is a complete engine control and immobilizer set designed for selected BMW 1 Series and 3 Series models with the N46 engine and manual transmission. The kit includes the DME engine control unit, the CAS2 module, and two keys, facilitating a consistent and technically correct replacement of the entire system. This solution allows for the restoration of proper powertrain electronics operation while maintaining factory security logic.

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

Purpose and compatibility

The presented ECU KIT is dedicated to BMW E87 and E90 series cars with the N46 engine in 118i and 318i versions, equipped with a manual transmission. Combining the DME controller with the CAS2 module and paired keys ensures system consistency, which is crucial when replacing control electronics in modern BMW vehicles.

The complete configuration of components facilitates workshop operations – it eliminates the need for tedious matching of individual modules and minimizes the risk of engine starting issues, bus communication errors, or immobilizer malfunctions.

Kit construction and component functions

The BMW E87 E90 N46 118i 318i 129HP ECU KIT DME CAS2 + 2 Keys Manual consists of an engine controller responsible for managing the N46 unit, a CAS2 module performing start authorization functions, and two keys compatible with this module. This configuration reflects the vehicle’s factory electronic layout, which promotes stable operation of the entire powertrain system.

Combining these elements into one set allows for maintaining compatibility between the controller software, data in the CAS2, and the transponders in the keys. For the user, this means smooth engine starting, correct security handling, and reducing the need for additional programming to the absolute minimum by a specialist.

Practical service application

This set from the Electronic control modules and controllers category is particularly useful in situations where the engine controller has been damaged, there are issues with the CAS2 module, or keys have been lost. Using a complete ECU KIT allows for:

• consistent replacement of components responsible for starting and engine control,
• reduction of diagnostic and electronics matching time,
• preservation of the factory BMW security system architecture.

This type of solution is valued by workshops specializing in the BMW brand, as it enables effective repair without the need for reconfiguring multiple independent modules.

Condition characteristics and installation aspects

The product comes from the secondary market, making it an attractive cost-effective alternative to new components while maintaining the manufacturer’s original specifications. The kit is intended for installation by a specialized service center equipped with appropriate BMW diagnostic software and experience in working with DME and CAS2 systems.

Before installation, it is recommended to verify the vehicle configuration compatibility (e.g., engine and transmission type) and perform adaptations and any necessary software updates in accordance with BMW service procedures. This approach ensures stable, predictable powertrain operation after the electronics replacement.

Technical support and electronics selection

If you want to better understand when choosing a used engine controller, comfort module, or sensors is justified and how to safely select such components for a specific car, it is worth checking out our guide: Second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?. You will find practical tips on diagnostics, selection, and installation of used automotive electronics there.

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