chime

On the way to work today my car started beeping at me and the seatbelt light was lit. I found that the car seemed to think that someone was sat in the passenger seat when there wasn't. There wasn't anything on the seat either. The only way I could shut it up was to fasten the passenger...

Can anyone help im haveing trouble with the seat belt chime,my warning light comes on the dash but no chime sounds,it has been working but has seemed to have stopped.