My first post at Bimmerfest. I wanted to 'chime" in on this thread, as I have always found the seat belt/key chime annoying, and now that we're getting 30 degree temps here in SE TX, I really don't need the frost warning going on and off. I've just taken care of the problem on my '07, and there are a couple of points I'd like to add to the origin (very nicely done) DIY.
The '07 uses T10 screws on the cluster, not phillips head, and the small screws holding the back of the unit on are T9 (not too common, make sure you have one before you take the cluster out).
Almost all the noise comes out the hole in the back of the chime. Rather than break it off, I stuffed some foam in the hole, secured the foam with a small piece of tape, and put another small piece of tape over the little grill on the back of the cluster.
The volume has been reduced to almost nothing, barely above the threshold my airplane/motorcycle damaged ears can detect.
Last edited by dutchhollywood; 02-05-2011 at 07:50 AM.