Usually the only time the airbag's warning light turns on is when there has been an accident and the airbag has deployed. But sometimes the airbag light, also called the Supplemental Restraint System (SRS) light, goes on because the On-Board Diagnostics computer receives a trouble code from a sensor in the SRS. This is to alert you of a malfunction in the airbag system. In either case, you need to have the airbag system replaced before you reset the airbag's warning light. Once you do that, it is an easy fix taking only a few moments of your time.
Find the fuse panel cover in the foot well on the driver's side of the vehicle. Pull down on it to open it.
Find a yellow connector inside the fuse panel. Pull out this connector. This is the airbag power connector, also called the SRS power connector.
Insert one end of the paper clip into one terminal of the SRS power connector and insert the other end of the paper clip into the other terminal.
Put the key into the ignition and turn on the vehicle, making sure you don't start the engine. The paper clip shorts out the SRS light, thus resetting and turning it off. Plug the SRS power connector back into the fuse panel. Put the cover back on the fuse panel and shut off the vehicle.
Wait a couple of minutes, then turn the engine on. Look on the instrument panel to ensure that the SRS light has turned off. Turn off the engine and remove the keys from the vehicle.