Trailbraker

Ignoring it isn't a good idea in general when the light is on, ALL the airbags are completely de-activated and will not deploy even in a serious crash.

Its not neccessarily just a loose connection under the seat, some of the contacts in various locations corrode over time and need replacing, its a real pain in the ass - I have had various ones replaced over the years.

..and can also reoccur eventually.

Edwards scenario sounds like a loose connection rather than a corroded connection that won't reestablish a circuit.

Peter K had determined a new better quality component, albeit expensive that lasted longer. Don't have the details though..

I'm not a doctor - but I really do recommend braking later