Vehicle was parked at a store in accessory mode while I ran inside to grab drinks on the way to a birthday party. My children were inside and noticed smoking from the hood and got out before the vehicle was consumed by flames. Luckily the engine was not running and we were not driving/accelerating at the time of fire. I had several issues with headlight and taillights blowing, the last time the headlight harness was completely melted and had to be changed out. The fire department speculates the fire started near the battery, which would make sense considering the headlight in question was the one closest to the battery, and accessory mode was on. My 5 year old now believes every car we have will eventually catch fire. Please advise.