Just read on flipboard the Toyota has launched a limited service campaign for 2005-2008 Tacomas for rusted frames. What about our 4Runners. I dont care where my frame was made....its a rusted POS.
I don't think they do to be honest. 3rd gens, yes. But I haven't seen any rotted 4th gens yet. I'm not saying they aren't out there, but they aren't common enough to pop up on here that often.
As far as surface rust goes...who cares? It's cosmetic. Just wire brush it and paint. I did this a year ago and my frame still looks great.
4th Gens do have the same rust issue. I posted a thread a while back about a 4runner I was looking to purchase from a dealer here in Houston. The frame was pretty bad....salesman said it was just surface rust....Ill find the thread and post the link.
I posted pictures of mine a few months ago. Its pretty bad. Im pretty sure I could rip the cross member under the radiator off with my hands. I brought it to the local dealer and he was pretty surprised at the shape it was in. My runner is from NE, only been in Florida for about a year.