BMW 1 3 5 Series E60 E87 E90 CAS 3 ECU Control Unit Key Reading Module 9217853

BMW 1 3 5 Series E60 E87 E90 CAS 3 ECU Control Unit Key Reading Module is a factory-original component from the Electronic control units and controllers category, responsible for the advanced operation of the vehicle's access and starting system. The original BMW design ensures proper integration with the car's electrical system and seamless communication with other control units. It is a practical solution for users looking for a proven CAS module for E-series BMW models.

Specifications and technical data

• SKU: 9217853
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9217853
• Substitutable numbers: 61359395657, 9395657, 61359287535, 9287535, 61359237047, 9237047, 61359217853, 9217853, 61359147226, 9147226, 61359226238, 9226238, 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, 61356943836, 6943836, 61359147216, 9147216
• Category: ECUs & Computer Modules

Purpose and function of the CAS module

The CAS module in the BMW E-series is responsible for key authorization, start/stop function control, and communication with other vehicle controllers. As a component in the Electronic control units and controllers category, it works with the vehicle's data bus, ensuring correct information exchange between the ignition system, immobilizer, and comfort systems. Using an original CAS controller reduces the risk of communication errors and vehicle starting issues.

Benefits of using an original BMW controller

Using a factory-original CAS module in the BMW E60, E87, and E90 ensures compatibility with the vehicle's software and the parameters stored in other control units. Original electronics are designed for the specific electrical architecture of the car, which facilitates adaptation and coding during service. For workshops and users, this means stable system operation, predictable behavior during diagnostics, and the ability to utilize the full functionality intended by the manufacturer.

Interchangeable numbers and selecting the right module

The presented CAS controller has an assigned OEM part number and an extensive list of interchangeable numbers, making it easier to match it to a specific BMW configuration. This allows for precise selection of the module according to the vehicle's equipment version and model year, without the need for electrical modifications. When selecting, it is recommended to use diagnostic data or the manufacturer's catalog to ensure full compatibility with the existing network of controllers.

Condition, service application, and installation

The offered module belongs to the group of used OEM components, making it an attractive service solution in the event of a factory controller failure in a BMW E-series. This type of part is particularly useful for repairs where maintaining the original electrical architecture and proper cooperation with the vehicle's security system is crucial. Installation of the CAS module requires standard workshop procedures and subsequent software adaptation to the specific vehicle.

Technical support and electronics selection

When choosing a used CAS controller, it is worth paying attention to compatibility with other electronic components in the vehicle and adaptation procedures. Practical tips on selecting used controllers, comfort modules, and parking sensors can be found in the article: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?. Additionally, if you want to better understand why an original used part may be more beneficial than a replacement, the following guide will be helpful: 5 reasons why a used OEM part is a better choice than a replacement. 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 comfort controllers, body modules, or power management systems, check out the available parts in the BMW electronic control units and controllers category.