what is Peugeot BSI mean?

Peugeot BSI stands for "Built-in Systems Interface." It is a central electronic control unit in Peugeot vehicles that manages various functions, including comfort, safety, and communication systems. The BSI acts as a hub for data exchange between different electronic components, enabling features like keyless entry, lighting control, and fault diagnostics. It plays a crucial role in enhancing the overall functionality and efficiency of the vehicle's electrical systems.