I am new to this forum so my apologies if I say anything I am not suppose to. I have a 2013 GTS launch edition with 34XXX miles and having problems. I came home after a drive and I pulled in garage and turned car off. Walked away from car and ac fan stayed on. I have then have 8 volts from negative on battery to negative cable(so a short). I have pulled all computers and modules and have pulled every fuse and every relay......still have a short. Then if I pull the fan plug out or the resistor, there is no short. Put new fan blower and resistor. Did not fix problem. I am at a loss. I don’t know why I still have power going to just the fan motor. I can even control it by turning knob. But nothing else works. I have even unbolted starter and alternator wires. Still short. Also is stuck in race mode(think this is separate problem but happened at same time.) Put 2 new batteries. Any help I would greatly appreciate. I am not suffering as I still have my 2000 GTS to drive. I am mechanically incline and would greatly appreciate any help.