Headlights Turn Off While Driving problems of the 2014 Toyota Prius

Headlights and cabin lights failed to turn off when remote lock was activated. Lights were then turned off manually. Five hours later, in the parking lot, the car was nearly completely dead. Last time it happened, we left it and it recharged itself. This time, it did not recharge itself; it was completely dead the next day. We had to have it towed to the dealership, who "jumped" it and let it sit overnight. They say it now has no problem.