Yesterday when my wife started our 2016 Prius v, all the indicator lights started flashing. She tried to shut the car off but it would not turn off. She left the car in the garage, taking the key with her, and went to call the dealer. When she went back to the car, it eventually settled down to have just one warning light on (she doesn't remember which) and made whirring noises. Later she returned to the car and found it running and multiple indicator lights on steady without the key in it. She was eventually able to shut it down and then restart it and drive it to the dealer. The dealer "could not verify complaint,... found no engine or hybrid codes stored... Checked accessory battery, battery testing good." I checked the 12v battery myself and it read 12.23V. The car has also had a few sporadic problems recognizing the key lately - the doors don't unlock the first time you touch the door handle, occasionally it says there is no key when it's in your pocket. Any advice?