Last fall I purchased my very first new truck, a 2017 Tundra. With less than 2k miles, I had a service engine light. I opened the hood and found that there were some unwanted tenants, mice. I live in a suburban neighborhood that is fairly new and not too much green space, so we obviously have some rodents but it's not an issue I was too concerned about. After some research, it sounds like Toyota uses soy based plastics for various parts and wiring, which is particularly tasty to the rodents. Also, there is a nice little cubby hole under the air intake and on top of the engine that makes a perfect mouse home. Im assuming that Toyota won't cover it under warranty, maybe my insurance will, but what a pain. Looks like my first Toyota will probably be my last. Maybe I just got unlucky, but if you have a newer vehicle, especially a Toyota, take some preventative measures...