My commander won't start unless I jump start it. I have an error msg reading service all wheel drive well I think it is due to my readout being in German and won't change. And it also has aanother msg stating in German warten lessan which translates to keep waiting.. please help.. I'm also getting a clunking and knocking sound when I turn in to my drive way or going over a speed hump or 4x4 driving over pot holes or ruts. .