UNDERSTAND BMW CAS SYSTEM
The BMW Car Access System (CAS) is a crucial security feature in BMW vehicles, designed to prevent unauthorized access and starting of the engine. BMW has released several versions of the CAS system, each with its unique features and capabilities. In this article, we'll dive into the different versions and types of the BMW CAS system, how they work, and the various key types used.
BMW CAS System Versions:
BMW has released four versions of the CAS system to date:
How the BMW CAS System Works:
The BMW CAS system works by reading a coded signal from the key fob and verifying it with the CAS module. If the signal is valid, the CAS module will send a message to the Engine Control Unit (ECU) to allow the engine to start. If the signal is invalid or absent, the CAS module will prevent the engine from starting.
BMW Key Types:
There are two main types of keys used with the BMW CAS system: