When you are trying to start the engine of your car, first you have to turn the key in the ignition system. In this case, the engine is making some repetitive noise for a second or two by the starter and runs the engine by its own power. Moreover, a small problem with the engine is producing a cranking sound while starting the Porsche but won't start at all. The following slides define the causes behind your Porsche Cayenne won’t start after long tries.