I am not responsibility for you breaking any part of your car, cluster etc. I am not responsible if you don't wear your seat belt. I am simply passing along information...
seatbelt chimes. Especially when things such as my laptop bag being on the front seat set off a loud obnoxious chime.
This idea of cutting another seatbelt off, seems to be the best anyone could come up with. (UGH)
That's why a few months ago I did this to my X3:
Since that worked, I decided to try it to my friend's e90, who promised not to be pissed if we fried his cluster.
All you need is a T10 Torx screwdriver to remove the cluster. Two T10 torx screws hold the cluster to the dash, and four T10 torx screws hold the cluster together.
Once you've removed the screws, gently pry the cluster apart. All you need to do is gently pry off this speaker. The seat belt light continues to work, there is just no audible sound... I have no idea what else comes out of this speaker--I just know there is no longer a seat belt chime...