said by Cho Baka:
You have no idea whatsoever about the cause of the airbag issue.
Pulling guesses out of thin air isn't helping.
If you are serious, spend another bit of money and get a proper estimate for the airbags + vehicle overall condition.
I suggest this be done at the dealer, as they know the vehicle (and what to look for) better than anyone else.
I suspect it's the seat belt system since it has sensor in it and the seat belt thing is damaged. (I checked the manual)