If your vehicle is showing airbag warning light turns on when adjusting the power seat, here are the most likely causes and the parts you'll need to fix each one.
The yellow electrical connectors under the seat for the side airbags or seat belt pretensioners can become loose, often after vacuuming or seat removal. Moving the seat wiggles the connector, causing a momentary loss of connection and triggering the airbag light.
The wiring harness can fall out of its retaining clips and get caught in the seat tracks or moving mechanisms. Adjusting the seat pinches or stretches the wires, causing an open or short circuit in the airbag system.
Items like water bottles, umbrellas, or trash shoved under the front seat can catch on the delicate airbag wiring harness. When the power seat is adjusted, the debris physically pulls on the wires and connectors.
The wiring attached to the seat belt buckle moves every time the seat is adjusted. Over time, this wire can fatigue and break internally, triggering the airbag warning when flexed.
The sensor inside the seat cushion that detects passenger weight can become damaged. The physical flexing and shifting from adjusting the seat might cause a failing sensor mat to momentarily lose its signal.