In this video, I'll show you how I started preparing to replace the timing chain on a Toyota Prius 20. I also decided to replace the antifreeze, coolant pump, pump belt and pulley, and so on. Disassembly will take a long time, but you won't need many special tools. I decided to replace the chain because I had a P0016 error code before I bought the car, and there was also a distinctive creaking noise when starting and sometimes during acceleration.