I have a 2009 limited AWD, it has about 20,000 miles on it and the other day I started hearing a squealing noise from the right rear, or that's where it sounds like doing 90 mph. it stops when i turn the steering wheel or step on the brakes. Is this from the bearings or the brakes? I want to take it in to the Ford dealership; but we're leaving Germany in a couple of weeks. if it's nothing major I would rather wait and have it done back in the states.