Car interior surveillance system with e-call functionality

A car interior surveillance unit, comprising

• a detection unit including detection means for detecting a presence of a living human being or a living animal being in the passenger cabin of a car,
• a telecommunication unit including telecommunication means for establishing a wireless telecommunication link to a remote telecommunication participant,
• an electric power supply unit including
• at least one rechargeable battery for providing electric power in at least one operational mode of the car interior surveillance unit,
• a battery charging unit that is electrically connectable to an electrical connection point of the on-board electrical voltage of the car for charging the at least one rechargeable battery,
• an electric power monitoring device for monitoring a presence of electric power at the electrical connection point, and
• an electronic control unit that includes a processor unit and a digital data memory unit and that is configured for controlling operation of at least the detection unit and the telecommunication unit at least on the basis of
• a detected absence of electric power at the electrical connection point, and
• a detected presence of a living human being or a living animal being in the passenger cabin.