So here is what I was told and my knowledge is limited so I can only believe the dealership at this time. Hopefully this place can help. I have a 16 Tacoma & 4 Runner and both of them have little rust spots all over the body, hundreds of spots on both vehicles. So Toyota has agreed to paint my wife’s 4 Runner on the tailgate but the problem will keep happening if what they gave as the reason doesn’t get replaced. From Taylor Toyota in PA, they told me that tiny specs on brake dust is kicking off the brakes and eating through the paint. Does anyone else have this issue or does any of this sounds like a crazy reason given to me. Thanks for all your help and to this site. It’s absolutely awesome and everyone on here.