BMW E87 E90 118i 318i N46 129HP Engine Control Unit ECU Kit DME 7552176 CAS2 Key

BMW E87 E90 118i 318i N46 129HP Engine Control Unit ECU Kit DME CAS2 Key is a factory module from the Electronic control modules and controllers group, designed for the electronic systems of the BMW 1 Series E87 and 3 Series E90 with the N46 engine. It is responsible for advanced handling of comfort and safety functions, serving as a key element of the vehicle's electronic architecture.

Specifications and technical data

• SKU: 7552176-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7552176
• Substitutable numbers: 12147552177 12147552176 12147550535, 12147550534 12147545043 12147545042, 12147531846, 7531846, 12147557291, 7557291, 7552177 7552176 7550535, 7550534 7545043 7545042, 0261208582, 0 261 208 582
• Category: ECUs & Computer Modules

Purpose and function of the CAS module

The CAS module in BMW E87 118i and E90 318i models with the N46 unit acts as the central module responsible for start authorization, key handling, and communication with other controllers in the vehicle. As an original BMW part, it ensures compatibility with the factory electrical installation and proper communication within the data bus.

The module is part of a complex electronic system, which is why its use is particularly important for professional control system repairs, replacing a damaged CAS module, or retrofitting the vehicle with features intended by the manufacturer.

Benefits of using an original BMW module

Using an original CAS module from the Electronic control modules and controllers group allows for maintaining software consistency and operating parameters with other controllers in the car. This minimizes the risk of communication errors, starting problems, or malfunctions of comfort systems.

The module sourced from BMW dismantling is a solution that, in many cases, enables an economical yet technically correct vehicle repair. When properly selected in terms of equipment version and software, it can be effectively adapted by a specialized service or automotive electrician.

Selection and compatibility in the electronic system

The CAS module works with other controllers in the vehicle, so when replacing it, it is crucial to match it to the specific configuration of the BMW E87 or E90 with the N46 engine. In practice, this means verifying compatibility with the existing installation, equipment version, and vehicle software.

The module has an assigned OEM part number and associated interchangeable numbers, which facilitates precise identification of the correct component for professional workshops and parts sellers. This makes it possible to select a controller that, after proper programming and synchronization, will work with the keys, immobilizer, and other electronic systems.

Condition, origin, and service application

The offered CAS module is a used item, sourced from a dismantled BMW vehicle. This type of part is particularly valued in brand-specialized services, where the ability to restore full functionality of the electronic system while maintaining reasonable repair costs is essential.

Due to the nature of the module, installation and any necessary coding or adaptation by a specialized workshop equipped with appropriate BMW diagnostic software is recommended. This ensures proper cooperation with the existing installation and avoids problems with starting or communication between controllers.

Technical support and additional information

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

To better plan work on electronic systems in BMW 3 and 5 series, including engine controllers or comfort modules, it is worth reading the practical tips included in the article Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using dismantled parts?. You will find useful information there regarding the safe use of used electronic modules in BMW service.