Thanks John! I just had exactly the same problem while preparing to hardwire my radar detector. I knew it was a fuse but had pulled all the ones where the name in the owner's manual made sense (mirror, driver's window). Wasn't looking forward to pulling them all out, was thrilled to find this old post which gave me exactly the right answer.
So, just for Google juice: if your driver's window, SYNC microphone, and compass all fail (COMPASS NO RESPONSE message), replace fuse 41!