Originally Posted by Driven

If you are replacing a door carrier, see here...

http://www.xoutpost.com/articles/x5/...andle-fix.html

It may not be necessary to disconnect the battery. I just replaced my driver side carrier and while the airbag needed to be unbolted from the door, it did not need to be disconnected. However if it makes you more comfortable having the battery disconnected, use the remote terminals under the hood.