Method and system for controlling a filling operation of a vehicular liquid storage system

It is proposed a method for controlling a filling operation of a vehicular liquid storage system comprising a tank (100) equipped with a filler pipe (110) and a shut-off valve (130), the method comprising: - detecting (210) the start of a refilling event; - while the shut-off valve is open (215), observing (220) whether a measured fill level of the tank has reached a predetermined fill level; - if the predetermined fill level has been reached (230), performing the following steps: - closing (240) the shut-off valve to induce a shut-off of a filling nozzle; - when a first pressure criterion is met (242), opening (245) the shut-off valve; and - when a second pressure criterion is met (250), closing (260) the shut-off valve; The second pressure criterion comprises a decrease of pressure inside the tank below a predetermined pressure level.