If your vehicle is showing airbag warning light is flashing, here are the most likely causes and the parts you'll need to fix each one.
Moving the front seats or shoving items underneath can easily dislodge or damage the yellow electrical connectors for the seat belt pretensioners or side airbags.
The clockspring maintains the electrical connection to the driver's airbag as the wheel turns. When its internal ribbon cable breaks from normal wear, the airbag light flashes and the horn often stops working.
The microswitch inside the seat belt buckle that detects if the belt is fastened can wear out or get jammed with dirt and debris, triggering a safety system fault.
Airbag control modules are highly sensitive to voltage drops. A weak battery or failing charging system can trigger a supplemental restraint system (SRS) fault during engine startup.
If the steering wheel, dashboard, or seats were recently removed for repairs, detailing, or aftermarket upgrades, the technician may have forgotten to fully seat the yellow airbag harnesses.
Crash sensors mounted behind the front bumper are exposed to road salt and water. Corrosion or minor parking lot bumps can damage them and trigger the warning light.