I have a 2004 955 cayenne turbo and have a strange issue with the door locking system and wondering if it might be the door handle. I have done the kessy mosfet replacement in the past. I am able to unlock the doors with the keyfob but the double pull on the drivers door handle will not open the door anymore. Also after shutting the car off, at times the inner door handle on driver's side will not open the door and I end up having to press the lock/unlock button a couple times and the handle will then open the door. The other issue is if any of the other doors are open before the driver's side door, I cannot open the driver's door until those other doors are closed. Could I be dealing with an antenna issue or bad door handle.