My 540iT has convenient opening windows enabled. Unfortunately, to many times, while in my pocket, the key button is getting pressed and opening my windows/sunroof. This button push happens while I'm in a building. I come out hours later to see my car open to the elements. Luckily, it hasn't been raining or snowing. I'd like to disable this feature. The following document implies that this feature can be disabled. http://www.bavarianmachine.com/docs/98E46E52E53R50.pdf Can I disable this feature without special equipment? If not, what equipment is required?