I had some body work done on my 2015 last year. I had a rust spot on the lower front fender that didn’t look too bad. One shop that came highly recommended flat out refused to work on rust. They said it always comes back. Another shop with a good reputation said they try, but ended up calling me to say what you can’t see is worse. Replaced fender. So for a 2005, you might be looking at replacing parts if that is possible.