Probably similar on J's Corolla.
It thinks the driver's buckle isn't fastened about 5% of the time. No dinging, fortunately, just a flashing light in the instrument pod. Usually, pulling the belt out all the way (while buckled) and letting it retract eventually gets it to turn off. Not always, though.
It always raises our blood pressure when we go to get the thing inspected...
Cheers,
Scott.