Hi Toni. You just answered your question on the airbag light. It is probably the seat belt tensioner. I have been told that if you make sure the belt is fully retracted after you get out of the van it will usually work OK. If the light is on, the airbags will not deploy. As for your window you can liberally apply a silicone spray to both the front and rear window seals without removing the panel. That will take care of the window problem. Good Luck.