Technical Instructions: Toyota has received reports that certain 2006 through 2008 Model Year RAV4 vehicles (equipped with a V6 (2GR) engine) operated in specific cold climate areas where high amounts of road salt are used (?Cold Climate States?) may exhibit more-than-normal corrosion to the vehicle?s Center No.2 Exhaust Pipe sub-assembly (muffler). Toyota investigated these reports and determined that this condition may lead to rust perforation in the muffler. This condition is unrelated to and separate from normal surface rust which is commonly found on metallic surfaces after some years of use and/or exposure to the environment.