So far so good.. I think the problem is fixed.. We just got this car Sunday and had the CMBS light come on tuesday.. I took it dealership on wednesday and at first they told me there was nothing they could do.. However I forced the issue with the TSB - #19-051 mentioned on page 2 of this post. It took a little convincing however I presented it in a way that would make them look dumb if they didn't apply the fix.