Hello, I've been studying this topic a bit.
CAN Bus in a car is a system for establishing communication between microcontrollers. The backbone connects all the microcontrollers in the car and provides information to the central primary controller. If you are interested in the details, there is an article that explains what is canbus wiring It helps establish communication between microcontrollers and eliminates any concerns about multiple connection failures that are difficult to detect.
In a car, the CAN Bus is used to connect various systems and control modules, such as the engine control unit, transmission control unit, ABS system, airbags, power steering, and others. It enables these systems to exchange data and work together to control the vehicle's functions, such as engine performance, transmission shifting, stability control, and safety features.
The use of a CAN Bus helps to reduce the number of wires needed in a vehicle, making it more efficient and cost-effective, and also enables faster communication between systems, which can improve the vehicle's performance and safety.