My wife got into her Prius to run an errand. It started as normal but would not go into gear. There were several lights flashing when she called me to come look. Yellow triangle with an exclamation point, On button was red, Park button was flashing green, no error codes showing. I tried jumping it and nothing. Now attempting to shut off the car does not work. Several light stay on. When she got out with the key, an alarm tone sounded until she returned it to the cabin. My search of the forum would seem to indicate the 12V battery needs replacing. Sound right?