Dealer Letter: October 12,2017 Sequoia (ZH8 and ZH9) Frame Replacement and CRC Application now available. In our continuing efforts to ensure the best in customer satisfaction, Toyota is announcing a Warranty Enhancement Program to extend the warranty coverage for Frame Corrosion on certain 2005 ? 2007 model year Sequoia vehicles. On May 21, 2017, a settlement of claims in a class action lawsuit involving 2005 ? 2007 Toyota Sequoia vehicles regarding frame corrosion was approved. This finally approved class action settlement includes inspection of the customer?s frame, and if the frames meet or exceed the Rust Perforation Standard based on the Court-ordered inspection criteria, the frame will be replaced at no cost to the customer.