Only 1 of my keys will start car normally
After leaving windows open in rain and seats getting soaked. One key starts car normally but the other key must be held against the start button and that key will not lock the car.
That's a tough one. Have your VIN ready and go to this link, and there is a ton of information specific to your car and much more- https://ssl.toyota.com/owners/login
did you check the key battery?
Search Toyota Prius Questions
Toyota Prius Experts