That's beeping sound is very
That's beeping sound is very easy to be disabled with Prius Dr. Apps from your phone with a capable OBD2 scanner like Carista. The software is free and it can monitor your battery health too (voltage and internal resistance). Don't need to buy the subscription unless you want to reprogram TPMS or other complicated Dealer level programming. Beeping sound, lock and unlock behavior, battery check, are all free with Dr. Prius