I'm new here. But I am well versed in cars as I'm building a 67 beetle from ground up. Well on to my wife's cmax she noticed over our cctv that the 4-ways (hazards) were flashing. She thought I had left them on. When she got to the car they had stopped but the fan inside was pulsing on and off plus the dash lights were on and the head unit. No one had driven the car in 17 hours so. Before I start to look and strip it to bits could anyone have a idea for me