I have a 2009 Ford Edge.  The brake boosters failed.  I was told that newer Ford Edge models have had the warranty extended on this to cover the costs.  I have read on the Internet that as far back as 2007 people have had trouble with the brake boosters failing.  I contacted Ford and they documented my concern that it has not been recalled for the 2009 Edge.  They said that they need to get a certain number of complaints before a recall is started.  So,  you must call Ford at 1-800-392-3673 to report this problem.  I kept pressing the numbers that got me to a live Ford customer service representative.  Let's do our part to get this safety issue resolved.