I hate that this is my first post here...but the quote above is not truth. My brother in law is an executive on the quality control side at the Tundra plant here in SA. Sensors don't get hammered into place...or perhaps I should say that things done that way aren't condoned. If your American worker (at the Japanese plant) used a hammer, he did it of his own accord and that wasn't the prescribed way to do it. That's just American ingenuity crossing over into the Japanese plant. Let's hope it doesn't stick, eh? On a side note...isn't Ford's quality supposed to be above that of Toyota's nowadays? FWIW...this apparently isn't a structural integrity problem, or a problem that's going to cause your axle to fail. Its just a little ugly. Grab a couple bucks in rust converter and paint, take a few hours to coat the car and you won't have to worry about it again.