I know this is an old thread, but, I recently got an X3 cluster in for repair for non-functioning ambient temp sensor. I was shocked when I found the problem. The soldering on these clusters is HORRIBLE. The people that made the printed circuit board royally screwed up and I'm surprised I don't see more complaints of intermittent or solid cluster problems. Maybe the cluster I am looking at is a fluke and the problem was corrected. I hope it correct. I'm interested to know if you've had your instrument cluster replaced and what problem you experienced.