BMW 1 3 5 Series E60 E87 E90 CAS 3 ECU Control Unit Key Reading Module 9226238

BMW 1 3 5 Series E60 E87 E90 CAS 3 ECU Control Unit Key Reading Module is an advanced component from the Electronic control modules and ECUs group, responsible for handling key comfort and authorization functions in BMW 3 and 5 Series vehicles. The original BMW design ensures stable integration with the vehicle's electrical system and high compatibility with the factory electronics architecture. This solution is intended for users who want to restore the proper operation of comfort systems without compromising on OEM quality.

Specifications and technical data

• SKU: 9226238
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9226238
• Substitutable numbers: 61359226238, 9226238, 61359395657, 9395657, 61359287535613592370476135921785361359147226, 9287535923704792178539147226, 61359217853, 9217853, 61359147226, 9147226, 61359147221, 9147221, 61359147191, 9147191, 61359147195, 9147195, 61359147184, 9147184, 61356943834, 6943834, 61356943822, 6943822, 61356943814, 6943814, 61356943797, 6943797, 61356943771, 6943771, 61356943791, 6943791, 61356981416, 6981416, 61356964051, 6964051, 61356943766, 6943766, 61356943811, 6943811, 61356943796, 6943796, 61359136874, 9136874, 61356943830, 6943830, 613569
• Part type: Central Timing Module
• Category: ECUs & Computer Modules

Function and application of the CAS 3 control unit

The CAS 3 control unit acts as a central comfort module that manages, among other things, vehicle access logic, engine starting, and communication with other control units within the vehicle's network. Thanks to its integration with the vehicle's communication bus, the module coordinates the operation of multiple systems, which translates into consistent performance of the onboard electronics. In BMW E60, E87, and E90 series vehicles, using this type of control unit allows for maintaining the vehicle's original functionality, reducing the risk of communication errors that often occur when using unsuitable replacements. The factory CAS 3 architecture promotes system stability and facilitates diagnostics when needed.

Compatibility and interchangeable numbers

The offered control unit belongs to a group of components for which the manufacturer has provided a wide list of interchangeable numbers. This means that the module can be used as a replacement for various references used in subsequent model years and BMW equipment versions. This approach facilitates part selection during repairs, especially for vehicles that have undergone upgrades or feature complex electronics. Due to the presence of many reference numbers in the technical specification, the CAS 3 module can be matched to a specific vehicle configuration based on diagnostic data or information from the original control unit. The extensive list of interchangeable numbers increases application flexibility and allows for the optimization of the service process.

Product characteristics and condition

The presented control unit comes from the BMW brand and is a secondary market component, which allows for combining original design with a more favorable purchase cost compared to a new part. The module is intended for further use after proper matching and configuration in the vehicle, in accordance with BMW service procedures. As an electronic component from the Electronic control modules and ECUs group, the CAS 3 requires installation by a person with experience in working with vehicle electrical systems and access to appropriate diagnostic software. Proper coding and adaptation of the control unit are crucial for seamless cooperation with other modules in the car.

Benefits of using the original CAS 3 module

Using the original CAS 3 comfort control unit in a BMW E60, E87, or E90 allows you to maintain the consistency of electronic systems and reduce the risk of communication issues between modules. This is particularly important in vehicles where many functions – from vehicle access to engine starting – are linked to a single central control unit. By choosing this product, you gain:

• preservation of the factory logic of comfort and authorization systems,
• better cooperation with the existing vehicle electrical installation,
• the ability to match based on a wide list of reference numbers,
• a solution compliant with the electronics architecture of BMW E60, E87, and E90 series.

Professional support and part selection

If you want to better understand how comfort modules, the iDrive system, FRM modules, or engine control units work in practice in BMW 3 and 5 Series, and how to safely use dismantled parts, it is worth checking out specialized materials. Practical tips can be found 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?, which discusses typical repair scenarios and best service practices. If you are planning a comprehensive repair or upgrade of the onboard electronics in your BMW and need other components from the same group, such as engine control units, light modules, or comfort controllers, check out the available parts in the BMW electronic control modules and ECUs category. For larger service projects involving not only electronics but also other vehicle systems, a guide describing the strategy of sourcing used components in one place may also be helpful. Tips on effective selection of original components can be found in the material Comprehensive supply: From the engine to the smallest clip – how to source used car parts in one place?.