The present invention provides a horn system (1) for a vehicle, comprising an airbag module (7) and a cover (3) for receiving and covering the airbag module (7), wherein the cover (3) is moveable relative to the airbag module (7), and a horn circuit (17) for producing a warning signal in response to moving the cover (3) relative to the airbag module (7). The horn system according to the present invention is characterised in that it comprises at least one conductive element (21, 22) attached to a housing (8) of the airbag module (7) and displaceable between an assembling position and a holding position, wherein the conductive element (21, 22) is configured to interact with the cover (3) in the holding position.