A method for operating a safety release system of a vehicle, wherein a first side safety structure of a side impact restraint protection system is arranged in connection to a first side door of the vehicle, wherein the safety release system is arranged between the first side safety structure and a connecting device, wherein the connecting device is releasably attaching the first side safety structure to a side impact restraint system protection member connected to a vehicle body structure, wherein the safety release system comprises a releasing mechanism and a releasing member detachable from each other, wherein the safety release system during normal operation of the vehicle is arranged in a first state where the releasing mechanism and the releasing member are connected to each other, wherein the method comprises the steps:
- arranging the safety release system in a second state after a vehicle impact event, wherein in the second state the releasing mechanism and the releasing member are disconnected from each other for releasing the connection between the first side safety structure and the connecting device, enabling opening of the first side door.