I have not had my air bag rattle, but I've had it out before. As always it's a really really good idea to disconnect the 12 volt battery first for 10 minutes to let the capacitor drain down so there's no chance you accidentally blow it (extremely unlikely anyways). On either side of the steering wheel there are plastic covers that can be removed. It looks like a place to pry with a screw driver, but you should be able to remove it with your fingernail, they slide straight out. Behind the right side one is the connector and a T30 Torx bolt, the left just the bolt. I would try tightening them up first. They had mine out and stripped these screws out so I had to replace them.
If that does not seem to help I would suspect that perhaps the horn spring back assembly underneath might be loose. To get to this the air bag would have to be removed. To do this, again battery disconnected! If you disconnect the air bag wile the battery is hooked up it will give you a SRS warning light that you have to have the proper tool to turn off. So you remove those same covers and slide the connector out, the outside slides back and the connections will pull apart, the air bag is then disconnected. After that remove the two torx bolts and the air bag will pull out. There are three alan head bolts that hold down the spring mechanism that push back on the air bag for the horn, I would try tightening these and see if that helps. If that doesn't work... well I don't really know.
If it's been out a few times it's likely the bolts, I noticed the new ones I got had what appeared to be lock tite on the threads of them.
BTW, where are you located? If your close to me I'd be glad to take a look at it for you. I know working around an air bag is intimidating, but once you've seen it done it's a piece of cake.
Be careful.
If that does not seem to help I would suspect that perhaps the horn spring back assembly underneath might be loose. To get to this the air bag would have to be removed. To do this, again battery disconnected! If you disconnect the air bag wile the battery is hooked up it will give you a SRS warning light that you have to have the proper tool to turn off. So you remove those same covers and slide the connector out, the outside slides back and the connections will pull apart, the air bag is then disconnected. After that remove the two torx bolts and the air bag will pull out. There are three alan head bolts that hold down the spring mechanism that push back on the air bag for the horn, I would try tightening these and see if that helps. If that doesn't work... well I don't really know.
If it's been out a few times it's likely the bolts, I noticed the new ones I got had what appeared to be lock tite on the threads of them.
BTW, where are you located? If your close to me I'd be glad to take a look at it for you. I know working around an air bag is intimidating, but once you've seen it done it's a piece of cake.
Be careful.
