04 sonata Air bag light on

Hi, Yesterday my wife's sonata air bag light came on and did not go outafter starting, I have a code reader an it does not show any codes, checked connections under seats an front sensors, can not find a reason for this every thing look to be ok . Have not bumped into any thing to cause this problem, Do I need to have a dealer check this out or is there something else I can check to take care of this ? thanks for any advice Slimone

Hi Guys, Well since I recieved NO answers to this question , took it in to my dealer, They looked an checked every thing or so they said and found NOTHING , Said it might have been the fact that something had rolled under the seat an caused it to bump the slide switch ,well sounds like to me they just didn't know what caused it but was able to turn off the light with their scanner, so Light is off now . They did say becareful not to let things roll under the seats . they have 2 switchs under them that is for the air bags . thanks anyway guys Slimone