Passenger airbag triggered by itself

hello! it may not fit 100% into the vectra forum, but it is a fundamental question. the following scenario: a well-known one of me pre-annealed her omega td caravan, bj. 01/98 and when the ignition key was turned on, the driver’s airbag came out. the vehicle has of course confessed. the vehicle was immediately brought to the friendly after this action. there you behave very cautiously. my question: how would you proceed? does an airbag not have to be an autole Is there a culture for such cases, if yes, where? who can help here? thank you inge ..also interesting the presentation, if, for example, a possible enthusiast would have tied up the shoe at this moment….