When the boot is opened the luggage compartment lights come on (two side lights and one central one). They go out when the boot is closed.The light inside the glove compartment comes on when it is opened and goes out when it is closed.The lights located beneath each of the sun blinds are turned on by a switch located on the lights themselves.The Body Computer continuously acquires the battery voltage signal to compare it with a limit figure (SBMT function): if the battery voltage measured is below the level, it intervenes via the CAN sending a signal to disable a series of loads: these include the glove compartment light, the boot light and the sun visor lights; the function is activated after the key-off (TEG extracted).