Sounds like you've tried all the usual suspects. Chucking the steering wheel back and forth usually does the trick, but that doesn't seem the case now. I wonder if it could be something in the alarm system. There may be some electronic interlock that prevents the key from turning. I had that problem in a clients Cayenne the other day. Switched to the other key they had for it and it started right up. Not sure if that helps but have you tried any other of the keys to the car?


Gar