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BMW CAS Car Access Systems Failures and Solutions

BMW vehicles are renowned for their performance, design, and advanced technology. However, E-Chassis models may experience issues with their CAS control units, also known as Car Access System control units. 

These units serve as the immobilizer master in E-Chassis BMW vehicles, while in later F and G Chassis models, the CAS is integrated in other modules.

 In this article, we will focus on E-Chassis vehicles and explore the benefits of Y Tech’s remanufactured CAS units with upgraded hardware.

Understanding BMW CAS Control Units and Terminals

The CAS control unit plays a vital role in your BMW, managing various operations, including terminal control. Here’s a quick recap of the key terminals in your BMW:

  • Terminal 30: Provides constant battery power.
  • Terminal 15: Activates ignition-on power after key authentication, controlled by the CAS.
  • Terminal 50: Responsible for starter control.

A failing CAS module often results in a lack of terminal 15 and 50 functions, leading to performance issues and potential immobilization of the vehicle.

Why Choose Y Tech’s Remanufactured CAS Units

Y Tech Automotive Solutions offers remanufactured CAS units with upgraded hardware for your E-Chassis BMW vehicle. Our plug-and-play solution provides several advantages:

  • Upgraded Hardware: Our remanufactured CAS units come with enhanced hardware to ensure improved performance and reliability.
  • Plug-and-Play Solution: We offer pre-programmed CAS units that are ready to be installed, providing a hassle-free and efficient solution.
  • Cost-effective: Our remanufactured CAS units are a more affordable option compared to purchasing a new unit from the dealership, without compromising on quality or performance.
  • Rigorous Testing: Each remanufactured CAS unit undergoes stringent testing and inspection to ensure optimal functionality and durability.
  • Expert Support: Our team of skilled technicians is available to assist with any questions or concerns regarding the installation and operation of your remanufactured CAS unit.

Browse our CAS Services

The ultimate solution for a faulty CAS is only a click away!

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