BMW E87 E90 118i 318i Engine N46 129HP ECU KIT DME 7561834 CAS2 + Key Automatic

Complete ECU DME set with CAS2 module and key for BMW 1 and 3 Series is a practical solution for owners of BMW E87 118i and E90 318i models with the 129 HP N46 engine and automatic transmission. The set comes from the Electronic control units and controllers category and allows for a cohesive replacement of the engine control unit with the immobilizer module, significantly simplifying the electronic system repair process. This is a beneficial option for workshops and users looking for a proven, complete gasoline engine control package.

Specifications and technical data

• SKU: 7561834-18
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561834
• Substitutable numbers: 7561834, 12147561834, 7565301, 12147565301, 7561891, 12147561891, 7550867, 12147550867, 7550857, 12147550857, 7568658, 12147568658, 7550869, 12147550869, 7568646, 12147568646, 4834203, 12144834203, 0261201159, 6943791, 61356943791, 6943771, 61356943771, 6981416, 51127118162, 7118162
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and Configuration of the BMW ECU Set

BMW E87 E90 118i 318i Engine N46 129HP ECU KIT DME CAS2 + Key Automatic is a factory electronic set designed for BMW 1 Series (E87) 118i and 3 Series (E90) 318i cars with the N46 gasoline engine and automatic transmission. In one package, you receive the DME engine control unit, the CAS2 module responsible for start authorization, and a matching key, which ensures the consistency of the vehicle's security system.

This configuration is particularly useful for:

• replacing a damaged engine control unit after an electrical failure or flooding,
• immobilizer problems and lack of communication between modules,
• the need to transfer a complete control system from another donor vehicle.

Benefits of Using a Complete DME + CAS2 + Key Set

Using a complete set from the same BMW model configuration reduces the need for complex programming from scratch. The consistency of the DME control unit with the CAS2 module and key facilitates adaptation in the vehicle, which in many cases shortens diagnostic and installation time compared to replacing individual components.

Key advantages of this solution include:

• maintaining the compatibility of the security and engine start system,
• easier integration with the electrical system in E87 118i and E90 318i models,
• the possibility of using the set as a base for further configuration for a specific car instance.

Technical Characteristics in the Context of the N46 Engine and Automatic Transmission

The presented ECU set is prepared to work with the 129 HP N46 gasoline engine, used in the BMW 118i and 318i, in conjunction with an automatic transmission. This means that the control maps, operating logic, and communication with other vehicle modules are adapted to this specific powertrain configuration.

In practice, this translates to:

• correct handling of gear shifting strategies in the automatic transmission,
• appropriate control of the gasoline engine's operation under typical driving conditions,
• communication with other electronic control units and controllers in the vehicle.

Condition, Origin, and Service Application

The set comes from a dismantled BMW vehicle and is part of the Electronic control units and controllers group. Such components are gladly used by specialized workshops dealing with BMW automotive electronics, especially for repairs where component compatibility and the ability to recreate the original vehicle configuration are crucial.

The complete ECU + CAS2 + key package is suitable both as a direct replacement part and as a base for further programming by automotive electronics specialists who will adapt the parameters to the specific chassis number and car equipment.

More About BMW Electronic Modules and Used Parts

If you are looking for other BMW electronic control units and controllers for your car, check out our dedicated category: BMW electronic control units and controllers. You will find a wide selection of engine control units, comfort modules, and other vehicle electronics components.

Want to better understand how to safely use used control units and modules in BMW 3 and 5 Series? Check out our guide: Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models Using Used Parts?, where we discuss practical aspects of selecting and installing used electronic components.