How do you replace the side airbag on a 2004 mitsubishi diamante?

To replace the side airbag on a 2004 Mitsubishi Diamante, first disconnect the negative battery cable to prevent any accidental deployment. Remove the door trim panel to access the airbag unit, which may involve unscrewing bolts and unclipping connectors. Carefully detach the old airbag from its mounting points and unplug the wiring harness. Install the new airbag by connecting the wiring and securing it in place, then reassemble the door trim and reconnect the battery.