My Porsche Cayenne 2004 V6 is not starting anymore and last time i had it running i was now able to turn it off with the key switch i have to pull out the fuel pump fuse. Before i had to pull the fuse on myt drive home a 2 days before that it smelled a bit burned for a few secounds and then it stopped and the batteri had been dying everytime i was going to start the car the 3 days previous to the day that i had to kill it. Even after i removed the key from the ignition the car was still on in the electrical sence and the egine was still runing so i had to kill it and 2 months later and it still hasent started since i had to kill it and i have been serching high and low trying to fix the fix for it to start i have change relays, fuses, tested the starter, i have tested electricity in the starter circut and there is power to the starter still no crank. My prediction is that the starter sylonoid is bad or brake pedel sensor is bad or key switch is bad, because i have change starter relay no start still, and im trying to fix it myself is i can with the tools i have and i do not really want to take it to a workshop because they will have to do so much work that is not necessary. Anyone with the same problem and got a solution to it? Any advice will help and insight of this problem.