How do I turn my Citroen c4 passenger airbag off?

To turn off the passenger airbag in a Citroën C4, first ensure the vehicle is turned off. Locate the airbag switch, which is usually found on the side of the dashboard or the passenger side door frame, and use the vehicle's key or a flat tool to turn the switch to the "Off" position. Check the dashboard for an indicator light confirming that the airbag is disabled. Always consult the owner's manual for specific instructions and safety warnings.