general problems of the 2000 Ford Excursion

While servicing the winshield washer fluid resevoir, I noticed an area of rust located on the right side of the vehicle where the fender joins the firewall. Upon closer inspection, the same problem was observedon the left side. After returning the vehivcle to the dealer for inspection, they noted that they would have to remove both fenders and hood etc. To see how extensive the problem exists. Presently, we are awaiting a Ford representative to view this vehicle and recommend what corrective action will be required. They have had this vehicle in their possession for 10 days. Nlm.