2012 Toyota Prius Owners Manual - Page 762

5-2. Steps to take in an emergency Interior buzzer Exterior buzzer Warning message Details An attempt was made to lock the doors using the smart key system while the electronic key was still inside the vehicle. An attempt was made to lock either front door by opening a door and putting the inside door lock button into the lock position, and then closing the door while pulling on the outside door handle with the electronic key still inside the vehicle. Correction procedure Once Continuous (Flashes) Retrieve the electronic key from the vehicle and lock the doors again. 5 When trouble arises 453