NHTSA Complaint #11430397 — 2016 FORD FUSION

Vehicle is a Plug In Hybrid, it was left in the garage (first floor of the house) overnight charging the EV battery. Sometime in the night, plugged in, no key in the ignition, the engine started and ran until it ran out of gas (in the garage with the door closed and my son sleeping on the 2nd floor over the garage). We were lucky no one died of carbon monoxide poising. In the morning the 12v engine battery was dead, smelled like it may burned up, my guess is the battery dying confused the computer. The vehicle is out of warranty, taking it to the dealer will cost me $1,000. I'm guessing that replacing the 12V battery will fix it (which is a lot cheaper). I don't plan on ever putting it back in the garage but someone needs to warn everyone else that has one of these!