CAS2 Module BMW E87 E90 CAS2 ECU Comfort Control Unit 61356964051 6964051

CAS2 Module BMW E87 E90 CAS2 ECU Comfort Control Unit is an advanced component from the Electronic control modules and ECUs category, responsible for managing key comfort and safety functions in BMW 1 and 3 Series vehicles. The original CAS2 design ensures consistency with the vehicle's factory electrical architecture, which translates into stable system operation and predictable electronic behavior. This solution is intended for users who want to maintain the vehicle's factory character and avoid compatibility issues.

Specifications and technical data

• SKU: 6964051
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 61356943791
• Substitutable numbers: 61356943771, 6943771, 613569437916135698141661356943786, 613569437756135694376661356964051, 694379169814166943786694377569437666964051, 61359395657, 9395657, 61359226238, 9226238, 61359217853, 9217853, 61359147226, 9147226, 61359147221, 9147221, 61359147191, 9147191, 61359147195, 9147195, 61359147184, 9147184, 61356943834, 6943834, 61356943822, 6943822, 61356943814, 6943814, 61356943797, 6943797, 61356943791, 6943791, 61356981416, 6981416, 61356964051, 6964051, 61356943766, 6943766
• Category: ECUs & Computer Modules

Function and role of the CAS2 module in BMW E87 / E90

The CAS2 module acts as a central controller in the vehicle, responsible for engine start authorization, key handling, and communication with other control units within the vehicle's network. As an element from the Electronic control modules and ECUs category, it integrates with the electrical system, ensuring proper communication between comfort systems, security features, and the ignition system. By using an original control unit, compatibility with the software and operational logic intended by the manufacturer is maintained, which minimizes the risk of errors, fault messages, or coding problems. This is particularly important in the case of BMW vehicles, where the electronic architecture is complex and requires precisely matched components.

Benefits of using an original CAS2 module

Using a CAS2 control unit dedicated to the BMW E87 and E90 allows for maintaining the consistency of the entire electronic system. In practice, this means:

• preserving the factory logic of the access and start system,
• proper cooperation with other control units in the vehicle,
• reducing the risk of software conflicts and communication errors,
• easier diagnostics using factory service tools. For workshops and users, this means a more predictable installation and configuration process, as well as a better chance of quickly restoring full vehicle functionality after a repair. The original CAS2 module is also a beneficial choice in the context of the vehicle's future resale, as it maintains compliance with the factory specification.

Condition, origin, and service application

The offered control unit comes from a BMW vehicle and is a used part, which makes it an attractive cost-effective alternative to new components while maintaining the original design. Such modules are often used in professional workshops specializing in the BMW brand, where both quality and the ability to match specific vehicle configurations are valued. The CAS2 module is suitable for situations such as replacing a damaged control unit, repairs after water damage, starting issues, or faults related to communication within the vehicle's network. After proper preparation and software matching, it can be integrated into the existing installation, restoring proper system operation.

Importance of matching and interchangeable part numbers

In the case of control units from the Electronic control modules and ECUs category, precise matching to the specific vehicle version is crucial. This CAS2 module has an assigned OEM part number and an extensive list of interchangeable numbers, which increases the range of possible applications in various BMW E87 and E90 configurations. Thanks to this, the workshop or user has greater flexibility when selecting a component while maintaining compliance with the manufacturer's requirements. Before installation, it is recommended to verify compatibility with the specific vehicle using technical data and to consult with a professional specializing in control unit programming. Such an approach helps avoid communication problems within the vehicle's network and ensures stable system operation after replacement.

Expanding the control system in BMW

If you are planning a comprehensive repair or upgrade of the onboard electronics in your BMW and need other elements from the same group, such as comfort controllers, body modules, or security management units, check out the available parts in the BMW Electronic control modules and ECUs category. For those interested in the broader context of using original control units and modules in modern premium cars, including the impact of such elements on maintaining the brand's character, our blog article may be helpful: Audi and emotions in their purest form – how used parts help maintain the brand's DNA. Although it concerns a different brand, it well illustrates the importance of using original electronic components in premium class vehicles.